def buildCloseContactAtoms(self, percentCutoff, ligand, comment="USER AD> "):
pairDict = self.distanceSelector.select(ligand.allAtoms,
self.macro_atoms, percentCutoff=percentCutoff)
self.pairDict = pairDict
#reset here
lig_close_ats = AtomSet()
macro_close_ats = AtomSet()
cdict = {}
for k,v in list(pairDict.items()):
if len(v):
cdict[k] = 1
for at in v:
if at not in macro_close_ats:
cdict[at] = 1
closeAtoms = AtomSet(list(cdict.keys()))
lig_close_ats = closeAtoms.get(lambda x: x.top==ligand).uniq()
#ligClAtStr = lig_close_ats.full_name()
ligClAtStr = comment + "lig_close_ats: %d\n" %( len(lig_close_ats))
if len(lig_close_ats):
ligClAtStr += comment + "%s\n" %( lig_close_ats.full_name())
macro_close_ats = closeAtoms.get(lambda x: x in self.macro_atoms).uniq()
macroClAtStr = comment + "macro_close_ats: %d\n" %( len(macro_close_ats))
if len(macro_close_ats):
macroClAtStr += comment + "%s\n" %( macro_close_ats.full_name())
#macroClAtStr = "macro_close_ats: " + len(macro_close_ats)+"\n" +macro_close_ats.full_name()
rdict = self.results
rdict['lig_close_atoms'] = lig_close_ats
rdict['macro_close_atoms'] = macro_close_ats
if self.verbose: print("macroClAtStr=", macroClAtStr)
if self.verbose: print("ligClAtStr=", ligClAtStr)
if self.verbose: print("returning "+ macroClAtStr + '==' + ligClAtStr)
return macroClAtStr , ligClAtStr
def filterAcceptors(self, accAts):
ntypes = ['Npl', 'Nam']
npls = accAts.get(lambda x, ntypes=ntypes: x.babel_type=='Npl')
nams = accAts.get(lambda x, ntypes=ntypes: x.babel_type=='Nam')
#nAts = accAts.get(lambda x, ntypes=ntypes: x.babel_type in ntypes)
restAts = accAts.get(lambda x, ntypes=ntypes: x.babel_type not in ntypes)
if not restAts: restAts = AtomSet([])
#if nAts:
if npls:
#for at in nAts:
for at in npls:
s = 0
for b in at.bonds:
if b.bondOrder=='aromatic':
s = s + 2
else: s = s + b.bondOrder
#if s<3:
#apparently this is wrong
if s<4:
restAts.append(at)
if nams:
#for at in nAts:
for at in nams:
s = 0
for b in at.bonds:
if b.bondOrder=='aromatic':
s = s + 2
else: s = s + b.bondOrder
#s = s + b.bondOrder
if s<3:
restAts.append(at)
return restAts
def get_atoms(mol, list_of_indicies, names_to_use=['N','CA','C'], verbose=False):
if verbose:
print "in get_atoms with list of indicies:"
print list_of_indicies
if not len(list_of_indicies):
raise 'invalid input: list of indicies is empty!'
atoms = AtomSet()
num_res = 0
for item in list_of_indicies:
first, second = item
#check for valid index and for end of chain
max_index = len(mol.chains.residues)-1
assert first<=max_index, 'invalid start of residue range'
assert second<=max_index, 'invalid end of residue range'
assert second>=first, 'second index cannot be smaller than first'
if second==max_index:
#ie mol.chains.residues[second]==mol.chains.residues[-1]:
these_res = mol.chains.residues[first:]
else:
these_res = mol.chains.residues[first:second+1]
if verbose: print "Adding %3d residues " %(len(these_res)),
num_res+=len(these_res)
if verbose: print "Now there are %d residues total" %(num_res)
for r in these_res:
for n in names_to_use:
atoms.append( r.atoms.get(n)[0])
assert len(atoms), 'invalid input: lists of indicies did not correspond to any residues!'
if verbose: print 'returning %d atoms' %(len(atoms))
return atoms
def createPairs(self, refnames, mobnames, slice, choice):
# This is where the atom pairs are created
# Get the ref atom set
refAtms = AtomSet([])
mobAtms = AtomSet([])
for name in refnames:
refnod = self.refNodes[name]
atms = refnod.findType(Atom)
refAtms = refAtms + atms
for name in mobnames:
mobnod = self.mobNodes[name]
atms = mobnod.findType(Atom)
mobAtms = mobAtms + atms
# Now apply the filters to the sets
if choice:
refFiltAtms = refAtms.get(self.filters[choice])
mobFiltAtms = mobAtms.get(self.filters[choice])
if not len(refFiltAtms) == len(mobFiltAtms):
#print 'slicing', slice
self.warningMsg("the two sets of atoms needs to be of the same length")
return
ebn = self.cmdForms['pairs'].descr.entryByName
lc = ebn['newpairs']['widget']
for refatm, mobatm in map(None, refFiltAtms, mobFiltAtms):
#self.pairs.append((refatm, mobatm))
pairName = refatm.full_name() + '---' + mobatm.full_name()
self.newPairs[pairName]=(refatm,mobatm)
lc.add((pairName, None))
def get_atoms(mol,
list_of_indicies,
names_to_use=['N', 'CA', 'C'],
verbose=False):
if verbose:
print("in get_atoms with list of indicies:")
print(list_of_indicies)
if not len(list_of_indicies):
raise Exception('invalid input: list of indicies is empty!')
atoms = AtomSet()
num_res = 0
for item in list_of_indicies:
first, second = item
#check for valid index and for end of chain
max_index = len(mol.chains.residues) - 1
assert first <= max_index, 'invalid start of residue range'
assert second <= max_index, 'invalid end of residue range'
assert second >= first, 'second index cannot be smaller than first'
if second == max_index:
#ie mol.chains.residues[second]==mol.chains.residues[-1]:
these_res = mol.chains.residues[first:]
else:
these_res = mol.chains.residues[first:second + 1]
if verbose: print("Adding %3d residues " % (len(these_res)), end=' ')
num_res += len(these_res)
if verbose: print("Now there are %d residues total" % (num_res))
for r in these_res:
for n in names_to_use:
atoms.append(r.atoms.get(n)[0])
assert len(
atoms
), 'invalid input: lists of indicies did not correspond to any residues!'
if verbose: print('returning %d atoms' % (len(atoms)))
return atoms
def getCations(self, atoms):
#select atoms in ARG and LYS residues
arg_cations = atoms.get(lambda x: (x.parent.type=='ARG' and \
x.name in ['CZ']))
lys_cations = atoms.get(lambda x: (x.parent.type=='LYS' and \
x.name in ['NZ', 'HZ1', 'HZ2', 'HZ3']))
#select any positively-charged metal ions... cannot include CA here
metal_cations = atoms.get(lambda x: x.name in ['Mn','MN', 'Mg',\
'MG', 'FE', 'Fe', 'Zn', 'ZN'])
ca_cations = atoms.get(
lambda x: x.name in ['CA', 'Ca'] and x.parent.type == 'CA')
cations = AtomSet()
#cations.extend(arg_cations)
for a in arg_cations:
cations.append(a)
#cations.extend(lys_cations)
for a in lys_cations:
cations.append(a)
#cations.extend(metal_cations)
for a in metal_cations:
cations.append(a)
#cations.extend(ca_cations)
for a in ca_cations:
cations.append(a)
return cations
def getAtoms(self, bnds):
ats0 = AtomSet()
for b in bnds:
ats0.append(b.atom1)
ats0.append(b.atom2)
d = {}
for a in ats0:
d[a] = 0
return AtomSet(d.keys())
def getAtoms(self,bnds):
ats0 = AtomSet()
for b in bnds:
ats0.append(b.atom1)
ats0.append(b.atom2)
d = {}
for a in ats0:
d[a] = 0
return AtomSet(d.keys())
def doit(self, bonds):
global var
var=1
ats = AtomSet([])
for bond in bonds:
ats.append(bond.atom1)
ats.append(bond.atom2)
self.vf.removeBonds(bond.atom1, bond.atom2)
var=0
self.vf.GUI.VIEWER.Redraw()
def checkAromatics(self):
"""
checkAromatics
"""
#this depends on userPref useProteinAromaticList
if not len(self.cyclebonds):
self.aromaticCs = AtomSet()
return ""
if self.isPeptide and self.useProteinAromaticList:
self.aromaticCs = self.getPeptideAromatics()
return ""
if self.isPeptide:
self.getPeptideBondDict()
else:
self.getLigandBondDict()
counter = 0
while counter < self.cyclecount:
counter = counter + 1
blist = self.bondDict[counter]
for item in blist:
at = item.atom1
self._getAdjAtom(item, blist)
#now each bond has 3 atoms specified for it: its own two and the next1 to atom1
result = self._getNormal(item)
item.nrmsize = result[0]
item.nrms = result[1]
#next find the other bond w/atom2:
z2 = list(
filter(lambda x, item=item, at2=item.atom2, blist=blist: x
!= item and x.atom1 == at2 or x.atom2 == at2,
blist))
#finally, return the other atom in this bond
item.nextbond2 = z2[0]
if item.nextbond2 == item:
item.nextbond2 = z2[1]
neighbor2 = self._getnxtAtom(item.atom2, item.nextbond2)
item.next2 = neighbor2
#next have to check whether the normals are parallel
#check each pair in each bond, how to keep track??
#have to get normal at item's atom2: so have to get next2 for this bond:
#have to loop twice to make sure neighbor has nrms
for item in blist:
p = item.nrms
psize = item.nrmsize
q = item.nextbond2.nrms
qsize = item.nextbond2.nrmsize
#theta is the critical test for planarity:
#if angle between 2 nrms is 0, atoms are planar
#NB>test is comparing theta,cos(angle), w/zero
item.theta = numpy.dot(p, q) / (psize * qsize)
for p in ['next1', 'next2', 'nextbond', 'nextbond2']:
delattr(item, p)
self.updateAromatics(self.aromaticCutOff)
msg = ' -found ' + str(len(self.aromaticCs)) + ' aromatic carbons\n'
return msg
def onRemoveObjectFromViewer(self, mol):
lenAts = len(self.atomList)
#if cmd has no atoms on its list, nothing to do
if not lenAts:
return
#remove any atoms which are being deleted from viewer
self.atomList = AtomSet(self.atomList) - mol.allAtoms
#if some have been removed, do an update
if lenAts != len(self.atomList):
self.update()
self.extslider.set(0)
def doit(self, bonds):
global var
var = 1
ats = AtomSet([])
for bond in bonds:
ats.append(bond.atom1)
ats.append(bond.atom2)
self.vf.removeBonds(bond.atom1, bond.atom2)
var = 0
if self.vf.hasGui:
self.vf.GUI.VIEWER.Redraw()
def getPeptideAromatics(self):
atSet = AtomSet()
allAts = self.allAtoms
arom_ats = allAts.get(lambda x, l = pep_aromList:\
x.parent.type+'_'+x.name in l)
if not arom_ats:
return AtomSet([])
for at in arom_ats:
at.name = 'A' + at.name[1:]
at.autodock_element = 'A'
#print 'returning ', len(arom_ats), ' arom_ats'
return arom_ats
def pickedVerticesToAtoms(self, geom, vertInd):
"""Function called to convert a picked vertex into an atom"""
# this function gets called when a picking or drag select event has
# happened. It gets called with a geometry and the list of vertex
# indices of that geometry that have been selected.
# This function is in charge of turning these indices into an AtomSet
chain = geom.chain
l = []
for vi in vertInd:
resInd = self.getResInd(vi, chain)
l.append(chain.residues[resInd].atoms[0])
return AtomSet(AtomSet(l))
def checkBonds(self):
"""
checkBonds
"""
msg = ""
#print self.name, ':'
nphs = AtomSet()
if len(self.nphs) and self.autoMergeNPHS:
newmsg, nphs = self.mergeNPHS()
msg = msg + newmsg
bc = self.bondClassifier
bonds = self.chains.residues.atoms.bonds[0]
for b in bonds:
b.activeTors = 0
b.possibleTors = 0
b.leaf = 0
#FIX THIS:
#if isPeptide, don't get cycles this way
#if self.isPeptide:
#cycleSelector = bc['cycles']
#del bc['cycles']
results = bc.classify(bonds)
#if self.isPeptide:
#bc['cycles'] = cycleSelector
#results['cycles'] = self.getPeptideBondDict()
#for k,v in results.items():
# print k,' = ', len(v)
self.rotatable = results['rotatable']
self.torscount = len(self.rotatable)
self.possible_torscount = self.torscount
for b in self.rotatable:
b.activeTors = 1
b.possibleTors = 1
for b in results['leaf']:
b.leaf = 1
for b in results['cycle']:
b.incycle = 1
hydrogenRotators = results['hydrogenRotators']
self.hydrogenRotators = hydrogenRotators
self.TORSDOF = self.torscount - len(hydrogenRotators)
ptAts = bc.dict['rotatable'].getAtoms(self.rotatable)
d = {}
for a in ptAts:
d[a] = 0
self.pTatomset = AtomSet(list(d.keys()))
#print 'len(pTatomset=', len(self.pTatomset)
self.leafbonds = results['leaf']
self.pepbackbonds = results['ppbb']
self.amidebonds = results['amide']
self.cyclebonds = results['cycle']
return msg, nphs
def doit(self, ats):
if len(ats) > 2:
if len(self.atomList):
atSet = ats + self.atomList
else:
atSet = ats
parent = atSet[0].parent
parent.buildBondsByDistanceOnAtoms(atSet)
self.atomList = AtomSet([])
self.update(True)
else:
lenAts = len(self.atomList)
last = None
if lenAts:
last = self.atomList[-1]
top = self.atomList[0].top
for at in ats:
#check for repeats of same atom
if lenAts and at == last:
continue
#lenAts = len(self.atomList)
#if lenAts and at==self.atomList[-1]:
# continue
if lenAts and at.top != self.atomList[-1].top:
msg = "intermolecular bond to %s disallowed" % (
at.full_name())
self.warningMsg(msg)
self.atomList.append(at)
self.undoAtList.append(at)
lenAts = len(self.atomList)
self.update(True)
#if only have one atom, there is nothing else to do
if lenAts < 2: return
#now build bonds between pairs of atoms
atSet = self.atomList
if lenAts % 2 != 0:
atSet = atSet[:-1]
#all pairs of atoms will be bonded
#so keep only the last one
self.atomList = atSet[-1:]
lenAts = lenAts - 1
else:
self.vf.labelByExpression(self.atomList,
negate=1,
topCommand=0)
self.atomList = AtomSet([])
for i in range(0, lenAts, 2):
at1 = atSet[i]
at2 = atSet[i + 1]
self.vf.addBonds(at1, at2, origin='UserDefined', topCommand=0)
self.update(True)
def superimpose_cb(self, event=None):
if len(self.newPairs) >= 4 :
# Need at least 4 pairs of atoms to do the superimposition
setAtm1 = AtomSet(map(lambda x: x[0],
self.newPairs.values()))
setAtm2 = AtomSet(map(lambda x: x[1],
self.newPairs.values()))
if len(setAtm1) != len(setAtm2):
message = ' ERROR: the 2 sets of atoms are not of the length\nthe superimposition cannot be performed. '
self.warningMsg(msg)
return
self.vf.superimposeAtoms(setAtm1, setAtm2)
self.supcb = 1
def checkForPossibleH(self, ats, blen):
# @@FIX THIS: WHAT IS THE POINT OF THIS???
# check that if at has all bonds, at least one is to a hydrogen
# have to do this by element??
probAts = AtomSet(ats.get(lambda x, blen=blen: len(x.bonds) == blen))
# probOAts = ats.get(lambda x, blen=blen: len(x.bonds)==blen)
# probSAts = ats.get(lambda x, blen=blen: len(x.bonds)==blen)
if probAts:
rAts = AtomSet([])
for at in probAts:
if not len(at.findHydrogens()):
rAts.append(at)
if len(rAts):
ats = ats.subtract(rAts)
return ats
def checkForPossibleH(self, ats, blen):
#@@FIX THIS: WHAT IS THE POINT OF THIS???
#check that if at has all bonds, at least one is to a hydrogen
# have to do this by element??
probAts = AtomSet(ats.get(lambda x, blen=blen: len(x.bonds)==blen))
#probOAts = ats.get(lambda x, blen=blen: len(x.bonds)==blen)
#probSAts = ats.get(lambda x, blen=blen: len(x.bonds)==blen)
if probAts:
rAts = AtomSet([])
for at in probAts:
if not len(at.findHydrogens()):
rAts.append(at)
if len(rAts):
ats = ats.subtract(rAts)
return ats
def superimpose_cb(self):
refAtoms = AtomSet()
mobAtoms = AtomSet()
for pair in self.newPairs.values():
refAtoms.append(pair[0])
mobAtoms.append(pair[1])
apply(self.doitWrapper, (refAtoms, mobAtoms), {})
def getHBAcceptors(self, ats, acceptorList):
#print "getHBAcceptors: acceptorList=", acceptorList
#getHBAcceptors
sp2 = []
sp3 = []
for item in sp2Acceptors:
if item in acceptorList: sp2.append(item)
for item in sp3Acceptors:
if item in acceptorList: sp3.append(item)
dAts2 = AtomSet(ats.get(lambda x, l=sp2: x.babel_type in l))
if dAts2:
dAts2 = self.filterAcceptors(dAts2)
dAts3 = AtomSet(ats.get(lambda x, l=sp3: x.babel_type in l))
return dAts2, dAts3
def doit(self, nodes, display=False):
# Get the molecules and the atomSets per molecules in the set of nodes.
molecules, atomSets = self.vf.getNodesByMolecule(nodes, Atom)
# Loop over the molecules and the sets of atoms
for mol, atm in map(None, molecules, atomSets):
if self.hasBhtree:
mol.buildBondsByDistance()
else:
# Need to build the bonds in a chain so loop over the chains.
for chain in mol.chains:
atmInChain = AtomSet(
filter(lambda x, name=chain.id: x.parent.parent.id ==
name,
atm))
if not len(atmInChain):
continue
residues = atmInChain.parent.uniq()
residues.sort()
residues[0].buildBondsByDistance()
for ind in xrange(len(residues) - 1):
res1 = residues[ind]
res2 = residues[ind + 1]
res2.buildBondsByDistance()
chain.connectResidues(res1, res2)
if display:
# when we call it from the GUI we want the result to be displayed
self.vf.displayLines(nodes, topCommand=0)
def doit(self, atom1, atom2):
#Have to find the bond first
theBond = None
for b in atom1.bonds:
at2 = b.atom1
if at2 == atom1:
at2 = b.atom2
if at2 == atom2:
#remove this bond
theBond = b
atom2.bonds.remove(theBond)
#this may not be possible
atom1.bonds.remove(theBond)
atom1.parent.hasBonds = 0
if atom2.parent != atom1.parent:
atom2.parent.hasBonds = 0
if atom1.parent.parent:
atom1.parent.parent.hasBonds = 0
if atom2.parent.parent:
atom2.parent.parent.hasBonds = 0
break
if not theBond:
from warnings import warn
warn('bond not found %s-%s' % (atom1, atom2))
return 'ERROR'
else:
event = EditAtomsEvent('coords', AtomSet([atom1, atom2]))
self.vf.dispatchEvent(event)
def setupUndoAfter(self, ats, angle,**kw):
#no atoms, <4 atoms,
aSet = AtomSet(self.atomList)
self.undoMenuString = self.name
if len(self.atomList)==0:
undoCmd = 'self.setTorsionGC.atomList=[]; self.setTorsionGC.update()'
elif len(self.atomList)<4:
#need to step back here
undoCmd = 'self.setTorsionGC.atomList=self.setTorsionGC.atomList[:-1]; self.setTorsionGC.update()'
elif self.origValue==self.oldValue:
return
else:
restoreAngle = self.origValue
self.undoNow = 1
undoCmd = 'self.setTorsionGC(\''+ aSet.full_name()+ '\',' + str(restoreAngle) + ', topCommand=0)'
self.vf.undo.addEntry((undoCmd), (self.name))
def __call__(self, atom1, atom2, bondOrder=1, origin='UserDefined', **kw):
"""None<-addBonds(atom1, atom2)
\natom1 : first atom
\natom2 : second atom
\nbondOrder : Integer specifying the bondOrder of the bond that is going to be created between atom1 and atom2.The bondOrder by default is 1.
\norigin : string describing how bond was specified"""
ats = self.vf.expandNodes(atom1)
if not len(ats): return 'ERROR'
at1 = ats[0]
ats = self.vf.expandNodes(atom2)
if not len(ats): return 'ERROR'
at2 = ats[0]
if at1.top != at2.top:
msg = "intermolecular bond between %s and %s \
disallowed" % (at1.full_name(), at2.full_name())
self.warningMsg(msg)
return 'ERROR'
bnds = AtomSet([at1, at2]).bonds[0]
if len(bnds):
msg = " bond between %s and %s already \
exists" % (at1.full_name(), at2.full_name())
return 'ERROR'
kw['bondOrder'] = bondOrder
kw['origin'] = origin
return apply(self.doitWrapper, (at1, at2), kw)
def stepBack(self, event=None):
items = self.historyList.curselection()
if len(items) == 0: return
try:
items = map(int, items)
except ValueError:
pass
thisTA = self.TAHdata.torslist[items[0]]
####last angle is thisTA.angleList[-1]
if len(thisTA.angleList) > 1:
last = thisTA.angleList[-1]
lastIndex = thisTA.angleList.index(last)
thisTA.angleList = thisTA.angleList[:lastIndex]
last = thisTA.angleList[-1]
else:
last = thisTA.angleList[0]
newAts = AtomSet([thisTA.atom1,thisTA.atom2, thisTA.atom3,\
thisTA.atom4])
#reset self.molecule
self.atomList = []
self.molecule = newAts[0].top
self.doit(newAts, last)
#self.doit(thisTA.atom1, thisTA.atom2, thisTA.atom3, thisTA.atom4,last,'A')
#self.setTorsionAngle(thisTA.atom1, thisTA.atom2, thisTA.atom3, thisTA.atom4,last,'A')
#self.drawTransformedAngle()
#self.updatespheres(items[0])
newstring = ""
for item in thisTA.angleList:
newstring = newstring + " " + "%5.3f" % item
self.newAngList.set(newstring)
self.extslider.set(last, 0)
#IS THIS ENOUGH in order to create correct log?
self.mouseUp()
def getObjects(self, column):
# return a list of objects associated with this node and possibly
# other seleted nodes. For selection we return a list for each type
# ( i.e. Atom, Residue, etc..)
# if the node is selected, collect object from all other selected nodes
resultAtoms = AtomSet([])
resultResidues = ResidueSet([])
resultChains = ChainSet([])
resultMolecules = MoleculeSet([])
buttonValue = self.chkbtVar[column].get()
if self.selected:
for node in self.tree.list_selected:
node.chkbtVar[column].set(buttonValue)
result = node.getNodes(column)
obj = result[0]
if isinstance(obj, Atom):
resultAtoms += result
elif isinstance(obj, Residue):
resultResidues += result
elif isinstance(obj, Chain):
resultChains += result
elif isinstance(obj, Molecule) or isinstance(obj, Protein):
resultMolecules += result
result = []
if len(resultAtoms): result.append(resultAtoms)
if len(resultResidues): result.append(resultResidues)
if len(resultChains): result.append(resultChains)
if len(resultMolecules): result.append(resultMolecules)
return result
else:
return [self.getNodes(column)]
def getTransformedCoords(self, atom):
# when there is no viewer, the geomContainer is None
if not atom.top.geomContainer:
return atom.coords
g = atom.top.geomContainer.geoms['master']
c = self.vf.transformedCoordinatesWithInstances(AtomSet([atom]))
return Numeric.array(c[0], 'f')
def write_maps(self, filestem=None, fld=1, xyz=1):
# now create the atom maps
if filestem is None:
filestem = self.receptor.name
for element in self.atom_types:
# set atom.element to the element
self.atom.element = element
self.atom.autodock_element = element
try:
self.atom_map_scorer.terms[4][0].set_vina_types(
AtomSet(self.atom))
except:
self.atom.is_hydrophobic = self.atom.element in [
'A', 'C', 'HD'
]
# score it
score_array = self.atom_map_scorer.get_score_array()
# create filename and write it
filename = filestem + "." + element + ".map"
self.write_grid_map(score_array, filename)
# now possibly write the fld file
if fld:
fld_filename = filestem + ".maps.fld"
self.write_maps_fld(fld_filename)
# now possibly write the xyz file
if xyz:
xyz_filename = self.receptor.name + ".maps.xyz"
self.write_xyz_file(xyz_filename)
def doit(self, Klass, KlassSet=None):
if type(Klass) == types.StringType:
if Klass in self.levelDict.keys():
Klass = self.levelDict[Klass]
else:
msg = Klass + "string does not map to a valid level"
self.warningMsg(msg)
return "ERROR"
if Klass is Protein:
Klass = Molecule
if len(self.vf.selection):
self.vf.selection = self.vf.selection.findType(Klass).uniq()
else:
if Klass == Molecule: self.vf.selection = MoleculeSet([])
elif Klass == Chain: self.vf.selection = ChainSet([])
elif Klass == Residue: self.vf.selection = ResidueSet([])
elif Klass == Atom: self.vf.selection = AtomSet([])
self.vf.selectionLevel = Klass
self.vf.ICmdCaller.setLevel(Klass, KlassSet=None)
if self.vf.hasGui:
col = self.vf.ICmdCaller.levelColors[Klass.__name__]
c = (col[0] / 1.5, col[1] / 1.5, col[2] / 1.5)
self.vf.GUI.pickLabel.configure(background=TkColor(c))
msg = '%d %s(s)' % (len(
self.vf.selection), self.vf.selectionLevel.__name__)
self.vf.GUI.pickLabel.configure(text=msg)
if hasattr(self.vf, 'select'):
self.vf.select.updateSelectionIcons()
self.levelVar.set(self.vf.selectionLevel.__name__)
def doit(self, ats):
if len(ats)>2:
if len(self.atomList):
atSet = ats + self.atomList
else: atSet = ats
parent = atSet[0].parent
parent.buildBondsByDistanceOnAtoms(atSet)
self.atomList = AtomSet([])
self.update(True)
else:
lenAts = len(self.atomList)
last = None
if lenAts:
last = self.atomList[-1]
top = self.atomList[0].top
for at in ats:
#check for repeats of same atom
if lenAts and at==last:
continue
#lenAts = len(self.atomList)
#if lenAts and at==self.atomList[-1]:
# continue
if lenAts and at.top!=self.atomList[-1].top:
msg = "intermolecular bond to %s disallowed"%(at.full_name())
self.warningMsg(msg)
self.atomList.append(at)
self.undoAtList.append(at)
lenAts = len(self.atomList)
self.update(True)
#if only have one atom, there is nothing else to do
if lenAts<2: return
#now build bonds between pairs of atoms
atSet = self.atomList
if lenAts%2!=0:
atSet = atSet[:-1]
#all pairs of atoms will be bonded
#so keep only the last one
self.atomList = atSet[-1:]
lenAts = lenAts -1
else:
self.vf.labelByExpression(self.atomList, negate=1, topCommand=0)
self.atomList = AtomSet([])
for i in range(0, lenAts, 2):
at1 = atSet[i]
at2 = atSet[i+1]
self.vf.addBonds(at1, at2, origin='UserDefined', topCommand=0)
self.update(True)
def setupUndoAfter(self, ats, angle, **kw):
#no atoms, <4 atoms,
aSet = AtomSet(self.atomList)
self.undoMenuString = self.name
if len(self.atomList) == 0:
undoCmd = 'self.setTorsionGC.atomList=[]; self.setTorsionGC.update()'
elif len(self.atomList) < 4:
#need to step back here
undoCmd = 'self.setTorsionGC.atomList=self.setTorsionGC.atomList[:-1]; self.setTorsionGC.update()'
elif self.origValue == self.oldValue:
return
else:
restoreAngle = self.origValue
self.undoNow = 1
undoCmd = 'self.setTorsionGC(\'' + aSet.full_name() + '\',' + str(
restoreAngle) + ', topCommand=0)'
self.vf.undo.addEntry((undoCmd), (self.name))
def removeNeighbors(self, atDict):
#filter out at-itself and at-bondedat up to 1:4
#NB keys could be hydrogens OR donors
for at in atDict.keys():
closeAts = atDict[at]
bondedAts = AtomSet([])
for b in at.bonds:
###at2 = b.neighborAtom(at)
at2 = b.atom1
if id(at2) == id(at): at2 = b.atom2
bondedAts.append(at2)
#9/13 remove this:
##also remove 1-3
for b2 in at2.bonds:
at3 = b2.atom1
if id(at3) == id(at2): at3 = b.atom2
#at3 = b2.neighborAtom(at2)
if id(at3) != id(at):
bondedAts.append(at3)
#for b3 in at3.bonds:
#at4 = b2.neighborAtom(at3)
#if at4!=at and at4!=at2:
#bondedAts.append(at4)
bondedAts = bondedAts.uniq()
goodAts = []
for i in range(len(closeAts)):
cAt = closeAts[i]
if cAt not in bondedAts:
goodAts.append(cAt)
if len(goodAts):
atDict[at] = goodAts
else:
del atDict[at]
return atDict
def buildCloseContactAtoms(self, percentCutoff, ligand, comment="USER AD> "):
pairDict = self.distanceSelector.select(ligand.allAtoms,
self.macro_atoms, percentCutoff=percentCutoff)
self.pairDict = pairDict
#reset here
lig_close_ats = AtomSet()
macro_close_ats = AtomSet()
cdict = {}
for k,v in pairDict.items():
if len(v):
cdict[k] = 1
for at in v:
if at not in macro_close_ats:
cdict[at] = 1
closeAtoms = AtomSet(cdict.keys())
lig_close_ats = closeAtoms.get(lambda x: x.top==ligand).uniq()
#ligClAtStr = lig_close_ats.full_name()
ligClAtStr = comment + "lig_close_ats: %d\n" %( len(lig_close_ats))
if len(lig_close_ats):
ligClAtStr += comment + "%s\n" %( lig_close_ats.full_name())
macro_close_ats = closeAtoms.get(lambda x: x in self.macro_atoms).uniq()
macroClAtStr = comment + "macro_close_ats: %d\n" %( len(macro_close_ats))
if len(macro_close_ats):
macroClAtStr += comment + "%s\n" %( macro_close_ats.full_name())
#macroClAtStr = "macro_close_ats: " + len(macro_close_ats)+"\n" +macro_close_ats.full_name()
rdict = self.results
rdict['lig_close_atoms'] = lig_close_ats
rdict['macro_close_atoms'] = macro_close_ats
if self.verbose: print "macroClAtStr=", macroClAtStr
if self.verbose: print "ligClAtStr=", ligClAtStr
if self.verbose: print "returning "+ macroClAtStr + '==' + ligClAtStr
return macroClAtStr , ligClAtStr
def doit(self, ats):
#DisplayStruts base class
self.reset()
hbats = AtomSet(ats.get(lambda x: hasattr(x, 'struts')))
if not hbats:
self.warningMsg('no struts bonds found, please compute them')
return 'ERROR'
self.hats = hbats
self.showAllHBonds()
def getHBDonors(self, ats, donorList):
#getHBDonors
sp2 = []
sp3 = []
for item in sp2Donors:
if item in donorList: sp2.append(item)
for item in sp3Donors:
if item in donorList: sp3.append(item)
dAts2 = ats.get(lambda x, l=sp2: x.babel_type in l)
if not dAts2: dAts2 = AtomSet([])
else:
dAts2 = self.checkForPossibleH(dAts2, 3)
dAts3 = ats.get(lambda x, l=sp3: x.babel_type in l)
if not dAts3: dAts3 = AtomSet([])
else: dAts3 = self.checkForPossibleH(dAts3, 4)
return dAts2, dAts3
def onRemoveObjectFromViewer(self, obj):
removeAts = AtomSet([])
for at in self.atomList:
if at in obj.allAtoms:
removeAts.append(at)
self.atomList = self.atomList - removeAts
removeAts = AtomSet([])
for at in self.undoAtList:
if at in obj.allAtoms:
removeAts.append(at)
self.undoAtList = self.undoAtList - removeAts
self.update()
def set_carbon_names(self, atoms, type):
#set carbon names explicitly
if not atoms or not len(atoms):
return "ERROR: set_carbon_names called with no atoms"
assert type in ['C','A']
if not hasattr(atoms, 'autodock_element'):
atoms.autodock_element = atoms.element
changed = AtomSet()
for at in atoms:
if at.element!='C': continue
if at.autodock_element!=type:
if self.rename:
if len(at.name)>1:
at.name = type + at.name[1:]
else:
at.name = type
at.autodock_element = type
changed.append(at)
return changed
def set_carbon_names(self, atoms, type):
#set carbon names explicitly
if not atoms or not len(atoms):
return "ERROR: set_carbon_names called with no atoms"
assert type in ['C', 'A']
if not hasattr(atoms, 'autodock_element'):
atoms.autodock_element = atoms.element
changed = AtomSet()
for at in atoms:
if at.element != 'C': continue
if at.autodock_element != type:
if self.rename:
if len(at.name) > 1:
at.name = type + at.name[1:]
else:
at.name = type
at.autodock_element = type
changed.append(at)
return changed
def buildHydrogenBonds(self, ligand, comment="USER AD> "):
h_pairDict = self.hydrogen_bond_builder.build(ligand.allAtoms,
self.macro_atoms)
self.h_pairDict = h_pairDict
#keys should be from lig, values from macro
#sometimes are not...@@check this@@
h_results = {}
for k, v in h_pairDict.items():
h_results[k] = 1
for at in v:
h_results[at] = 1
all_hb_ats = AtomSet(h_results.keys()) #all
d = self.results
macro_hb_ats = d['macro_hb_atoms'] = all_hb_ats.get(
lambda x: x.top == self.macro)
self.macro_hb_ats = macro_hb_ats
# process lig
lig_hb_ats = d['lig_hb_atoms'] = all_hb_ats.get(
lambda x: x in ligand.allAtoms)
self.lig_hb_ats = lig_hb_ats
outS = comment + "lig_hb_atoms : %d\n" % (len(lig_hb_ats))
for p in self.lig_hb_ats: #intD.results['lig_hb_atoms']:
for hb in p.hbonds:
if hasattr(hb, 'used'): continue
if hb.hAt is not None:
outS += comment + "%s,%s~%s\n" % (hb.donAt.full_name(
), hb.hAt.name, hb.accAt.full_name())
else:
outS += comment + "%s~%s\n" % (hb.donAt.full_name(),
hb.accAt.full_name())
hb.used = 1
#hsg1V:B:ARG8:NH2,HH22~clean: : INI 20:N5
#clean: : INI 20:O4,H3~hsg1V:B:ASP29:OD2
#clean: : INI 20:O4,H3~hsg1V:B:ASP29:OD2
#clean: : INI 20:N4,H3~hsg1V:B:GLY27:O
#clean: : INI 20:O2,H2~hsg1V:B:ASP25:OD1
#macroHStr = self.macro.allAtoms.get(lambda x: hasattr(x, 'hbonds') and len(x.hbonds)).full_name()
#ligHStr = ligand.allAtoms.get(lambda x: hasattr(x, 'hbonds') and len(x.hbonds)).full_name()
#return macroHStr + '==' + ligHStr
if self.verbose:
print "buildHB returning:"
print outS
return outS
def onRemoveObjectFromViewer(self, mol):
lenAts = len(self.atomList)
#if cmd has no atoms on its list, nothing to do
if not lenAts:
return
#remove any atoms which are being deleted from viewer
self.atomList = AtomSet(self.atomList) - mol.allAtoms
#if some have been removed, do an update
if lenAts!=len(self.atomList):
self.update()
self.extslider.set(0)
def removeNeighbors(self, atDict):
#filter out at-itself and at-bondedat up to 1:4
#NB keys could be hydrogens OR donors
for at in atDict.keys():
closeAts = atDict[at]
bondedAts = AtomSet([])
for b in at.bonds:
###at2 = b.neighborAtom(at)
at2 = b.atom1
if id(at2)==id(at): at2 = b.atom2
bondedAts.append(at2)
#9/13 remove this:
##also remove 1-3
for b2 in at2.bonds:
at3 = b2.atom1
if id(at3)==id(at2): at3 = b.atom2
#at3 = b2.neighborAtom(at2)
if id(at3)!=id(at):
bondedAts.append(at3)
#for b3 in at3.bonds:
#at4 = b2.neighborAtom(at3)
#if at4!=at and at4!=at2:
#bondedAts.append(at4)
bondedAts = bondedAts.uniq()
goodAts = []
for i in range(len(closeAts)):
cAt = closeAts[i]
if cAt not in bondedAts:
goodAts.append(cAt)
if len(goodAts):
atDict[at] = goodAts
else:
del atDict[at]
return atDict
def checkAromatics(self):
"""
checkAromatics
"""
#this depends on userPref useProteinAromaticList
if not len(self.cyclebonds):
self.aromaticCs = AtomSet()
return ""
if self.isPeptide and self.useProteinAromaticList:
self.aromaticCs = self.getPeptideAromatics()
return ""
if self.isPeptide:
self.getPeptideBondDict()
else:
self.getLigandBondDict()
counter = 0
while counter < self.cyclecount:
counter = counter + 1
blist = self.bondDict[counter]
for item in blist:
at = item.atom1
self._getAdjAtom(item, blist)
#now each bond has 3 atoms specified for it: its own two and the next1 to atom1
result = self._getNormal(item)
item.nrmsize = result[0]
item.nrms = result[1]
#next find the other bond w/atom2:
z2 = filter(lambda x,item=item, at2=item.atom2, blist=blist:x!=item and x.atom1==at2 or x.atom2==at2, blist)
#finally, return the other atom in this bond
item.nextbond2 = z2[0]
if item.nextbond2==item:
item.nextbond2 = z2[1]
neighbor2 = self._getnxtAtom(item.atom2,item.nextbond2)
item.next2 = neighbor2
#next have to check whether the normals are parallel
#check each pair in each bond, how to keep track??
#have to get normal at item's atom2: so have to get next2 for this bond:
#have to loop twice to make sure neighbor has nrms
for item in blist:
p = item.nrms
psize = item.nrmsize
q = item.nextbond2.nrms
qsize = item.nextbond2.nrmsize
#theta is the critical test for planarity:
#if angle between 2 nrms is 0, atoms are planar
#NB>test is comparing theta,cos(angle), w/zero
item.theta = Numeric.dot(p,q)/(psize*qsize)
for p in ['next1','next2','nextbond','nextbond2']:
delattr(item, p)
self.updateAromatics(self.aromaticCutOff)
msg = ' -found '+ str(len(self.aromaticCs)) + ' aromatic carbons\n'
return msg
def superimpose_cb(self):
refAtoms = AtomSet()
mobAtoms = AtomSet()
for pair in self.newPairs.values():
refAtoms.append(pair[0])
mobAtoms.append(pair[1])
apply( self.doitWrapper, (refAtoms,mobAtoms), {} )
def buildHydrogenBonds(self, ligand, comment="USER AD> "):
h_pairDict = self.hydrogen_bond_builder.build(ligand.allAtoms, self.macro_atoms)
self.h_pairDict = h_pairDict
#keys should be from lig, values from macro
#sometimes are not...@@check this@@
h_results = {}
for k, v in h_pairDict.items():
h_results[k] = 1
for at in v:
h_results[at] = 1
all_hb_ats = AtomSet(h_results.keys()) #all
d = self.results
macro_hb_ats = d['macro_hb_atoms'] = all_hb_ats.get(lambda x: x.top==self.macro)
self.macro_hb_ats = macro_hb_ats
# process lig
lig_hb_ats = d['lig_hb_atoms'] = all_hb_ats.get(lambda x: x in ligand.allAtoms)
self.lig_hb_ats = lig_hb_ats
outS = comment + "lig_hb_atoms : %d\n"%(len(lig_hb_ats))
for p in self.lig_hb_ats: #intD.results['lig_hb_atoms']:
for hb in p.hbonds:
if hasattr(hb, 'used'): continue
if hb.hAt is not None:
outS += comment + "%s,%s~%s\n"%(hb.donAt.full_name(), hb.hAt.name, hb.accAt.full_name())
else:
outS += comment + "%s~%s\n"%(hb.donAt.full_name(), hb.accAt.full_name())
hb.used = 1
#hsg1V:B:ARG8:NH2,HH22~clean: : INI 20:N5
#clean: : INI 20:O4,H3~hsg1V:B:ASP29:OD2
#clean: : INI 20:O4,H3~hsg1V:B:ASP29:OD2
#clean: : INI 20:N4,H3~hsg1V:B:GLY27:O
#clean: : INI 20:O2,H2~hsg1V:B:ASP25:OD1
#macroHStr = self.macro.allAtoms.get(lambda x: hasattr(x, 'hbonds') and len(x.hbonds)).full_name()
#ligHStr = ligand.allAtoms.get(lambda x: hasattr(x, 'hbonds') and len(x.hbonds)).full_name()
#return macroHStr + '==' + ligHStr
if self.verbose:
print "buildHB returning:"
print outS
return outS
def setAromaticCarbons(self, molecule, cutoff=None, debug=False):
assert len(molecule.allAtoms.bonds[0])
if cutoff:
if cutoff!=self.cutoff:
old_aromCs = molecule.allAtoms.get(lambda x:\
(x.element=='C' and x.autodock_element=='A'))
if old_aromCs is not None and len(old_aromCs)!=0:
if debug: print "resetting ", len(old_aromCs), " prior aromCs"
self.set_carbon_names(old_aromCs, 'C')
self.cutoff = cutoff
typed_atoms = molecule.allAtoms.get(lambda x: hasattr(x, 'autodock_element'))
currentAromCs = AtomSet()
if typed_atoms is not None and len(typed_atoms)==len(molecule.allAtoms):
currentAromCs = molecule.allAtoms.get(lambda x: (x.element=='C' and x.autodock_element=='A'))
if debug:
if currentAromCs is not None and len(currentAromCs):
print "now: ", len(currentAromCs)
else:
print "now: no aromCs"
aromBnds = self.aromBndSel.select(molecule.allAtoms.bonds[0],
self.cutoff)
aromBndAts = self.aromBndSel.getAtoms(aromBnds)
result = AtomSet()
changed = AtomSet()
if len(aromBndAts):
aromCs = AtomSet(filter(lambda x: x.element=='C', \
aromBndAts))
aromCs = aromCs.uniq()
if len(aromCs)>len(result):
result = aromCs
if debug:
print "len(aromCs)=", len(aromCs)
changed = self.set_carbon_names(aromCs, 'A')
#if len(changed)>len(result):
# result = changed
#return result
return changed
def onRemoveObjectFromViewer(self, obj):
removeAts = AtomSet([])
for at in self.atomList:
if at in obj.allAtoms:
removeAts.append(at)
self.atomList = self.atomList - removeAts
removeAts = AtomSet([])
for at in self.undoAtList:
if at in obj.allAtoms:
removeAts.append(at)
self.undoAtList = self.undoAtList - removeAts
self.update()
def getCations(self, atoms):
#select atoms in ARG and LYS residues
arg_cations = atoms.get(lambda x: (x.parent.type=='ARG' and \
x.name in ['CZ']))
lys_cations = atoms.get(lambda x: (x.parent.type=='LYS' and \
x.name in ['NZ', 'HZ1', 'HZ2', 'HZ3']))
#select any positively-charged metal ions... cannot include CA here
metal_cations = atoms.get(lambda x: x.name in ['Mn','MN', 'Mg',\
'MG', 'FE', 'Fe', 'Zn', 'ZN'])
ca_cations = atoms.get(lambda x: x.name in ['CA', 'Ca'] and x.parent.type=='CA')
cations = AtomSet()
#cations.extend(arg_cations)
for a in arg_cations:
cations.append(a)
#cations.extend(lys_cations)
for a in lys_cations:
cations.append(a)
#cations.extend(metal_cations)
for a in metal_cations:
cations.append(a)
#cations.extend(ca_cations)
for a in ca_cations:
cations.append(a)
return cations
class LigandMixin(Subject):
""" lfo adds capability to a protein/molecule to be used as a ligand
in an AutoDock docking
"""
def setup(self, useProteinAromaticList=1,
aromaticCutOff=7.5, maxtors=32,
autoMergeNPHS=1):
if self.chains[0].hasBonds==0:
self.buildBondsByDistance()
self.useProteinAromaticList = useProteinAromaticList
self.aromaticCutOff = aromaticCutOff
self.maxtors = 32
self.autoMergeNPHS = autoMergeNPHS
self.bondClassifier = AutoDockBondClassifier()
self.torsionTree = None
self.message = ""
self.torscount = 0
self.possible_torscount = 0
self.TORSDOF = 0
self.resKeys = q.keys()
self.PdbqWriter = PdbqWriter()
#should this be here?
msg = 'initialized ' + self.name +':\n'
#detect whether isPeptide
msg += self.checkIsPeptide()
#process charges
msg += self.checkCharges()
##process hydrogens
msg += self.checkHydrogens()
#process bonds
#this doesn't report anything???
newmsg, nphs = self.checkBonds()
msg += newmsg
#process aromaticCarbons
msg += self.checkAromatics()
return msg, nphs
def checkIsPeptide(self):
"""
checkIsPeptide
"""
#check whether each restype is in std list
#if so, self is a peptide
resSet = self.chains.residues
dict = {}
for r in resSet:
dict[r.type] = 0
for t in dict.keys():
if t not in self.resKeys:
self.isPeptide = 0
return ' -it is not a peptide\n'
#only get to this point if all
#residue types were found
self.isPeptide = 1
return ' -it is a peptide\n'
def checkCharges(self):
"""
checkCharges
"""
msg = ' -already had charges'
if hasattr(self, 'checked_charges'):
return msg
msg = ""
needToAdd = 0
chargedAts = self.allAtoms.get(lambda x: hasattr(x, 'charge'))
if not chargedAts:
needToAdd = 1
elif len(chargedAts)!=len(self.allAtoms):
needToAdd = 1
elif len(filter(lambda x:x.charge==0, chargedAts))==len(chargedAts):
#this checks that each atom doesn't have charge=0
needToAdd = 1
#to add Kollman need to:
# look up each atom's parent in q to get dict=q[at.parent.type]
# find the atom's name in dict to get a charge
# set atom._charges['Kollman'] to that charge
# there are special problems with his, cys and termini
# set allAtoms.chargeSet to 'Kollman'
if needToAdd:
if not hasattr(self, 'isPeptide'):
msg = self.checkIsPeptide()
if self.isPeptide:
#self.checked_charges = 'needs Kollman'
self.addKollman()
self.checked_charges = 'has Kollman'
#self.vf.addKollmanCharges(self, topCommand=0, log=0)
msg = msg + ' -added Kollman charges\n'
else:
#self.checked_charges = 'needs gasteiger'
self.computeGasteiger()
self.checked_charges = 'has gasteiger'
#self.vf.computeGasteiger(self, topCommand=0, log=0)
msg = msg + ' -added gasteiger charges\n'
else:
self.checked_charges = 'has charges'
msg = msg + ' -already had charges\n'
# adt will have to add charges... AND check them
#at this point, every atom has a charge and charges are not all 0k
#have to have unit charges per residue
#print 'calling checkMolCharges'
#errCharge, resList = checkMolCharges(self, self.vf)
#FIX THIS: need to add mechanism to adjust charges
#gui to let user pick + change
#or either change on first atom or spread over all
#self.checked_charges = 1
#if added charges, msg will say which one
#if did't add charges, msg will be 'ERROR'
return msg
def computeGasteiger(self):
#to compute Gasteiger need to:
# create an AtomHybridization()
# call its assignHybridization method on self.allAtoms
# create a Gasteiger()
# call its compute method on self.allAtoms
# THEN move gast_charge into _charges with gasteiger key
# set allAtoms.chargeSet to 'gasteiger'
# THEN delattr gast_charge from allAtoms
allAts = self.allAtoms
ah = AtomHybridization()
ah.assignHybridization(allAts)
Gast = Gasteiger()
Gast.compute(allAts)
gastCharges = []
for c in allAts.gast_charge:
gastCharges.append(round(c, 3))
allAts.addCharges('gasteiger', gastCharges)
del allAts.gast_charge
allAts.chargeSet = 'gasteiger'
def addKollman(self):
#to add Kollman need to:
# look up each atom's parent in q to get dict=q[at.parent.type]
# find the atom's name in dict to get a charge
# set atom._charges['Kollman'] to that charge
# there are special problems with his, cys and termini
# set allAtoms.chargeSet to 'Kollman'
for a in self.allAtoms:
dict = q.get(a.parent.type, {})
if len(dict):
a._charges['Kollman'] = dict.get(a.parent.type, 0)
else:
a._charges['Kollman'] = 0
a.chargeSet = 'Kollman'
def checkHydrogens(self):
"""
checkHydrogens
"""
#what if self doesn't have bonds
if not self.chains[0].hasBonds:
self.buildBondsByDistance()
hs = self.allAtoms.get(lambda x: x.element=='H')
self.nphs = AtomSet()
if not hs:
msg = ' -no polar hydrogens found!\n'
if hs:
nphs = hs.get(lambda x: x.bonds[0].atom1.element=='C' or \
x.bonds[0].atom2.element=='C')
if nphs:
self.nphs = nphs
msg = ' -found ' + str(len(self.nphs)) + ' nonpolar hydrogens\n'
else:
msg = ' -no nonpolar hydrogens\n'
return msg
def mergeNPHS(self):
lenNPHS = len(self.nphs)
if not lenNPHS:
return
nphs = self.nphs
atLen = len(self.allAtoms)
self.allAtoms = self.allAtoms - nphs
#first add charge to nph's heavy atom
chList = nphs[0]._charges.keys()
if not len(chList):
print 'no charges present'
return 'XXX'
#check that all nphs have a certain kind of charge
for at in nphs:
chs = at._charges.keys()
for c in chList:
if c not in chs:
chList.remove(c)
if len(chList):
for chargeSet in chList:
for h in nphs:
b = h.bonds[0]
c = b.atom1
if c==h:
c = b.atom2
c._charges[chargeSet] = c._charges[chargeSet] + h._charges[chargeSet]
#next delete nphs
for h in nphs:
b = h.bonds[0]
c = b.atom1
if c==h:
c = b.atom2
c.bonds.remove(b)
h.bonds = BondSet()
h.parent.remove(h)
#nb:
#these don't show up in deleteMol.getFreeMemoryInformation
del h
self.nphs = AtomSet()
return ' and merged them\n', nphs
def checkBonds(self):
"""
checkBonds
"""
msg = ""
#print self.name, ':'
nphs = AtomSet()
if len(self.nphs) and self.autoMergeNPHS:
newmsg, nphs = self.mergeNPHS()
msg = msg + newmsg
bc = self.bondClassifier
bonds = self.chains.residues.atoms.bonds[0]
for b in bonds:
b.activeTors = 0
b.possibleTors = 0
b.leaf = 0
#FIX THIS:
#if isPeptide, don't get cycles this way
#if self.isPeptide:
#cycleSelector = bc['cycles']
#del bc['cycles']
results = bc.classify(bonds)
#if self.isPeptide:
#bc['cycles'] = cycleSelector
#results['cycles'] = self.getPeptideBondDict()
#for k,v in results.items():
# print k,' = ', len(v)
self.rotatable = results['rotatable']
self.torscount = len(self.rotatable)
self.possible_torscount = self.torscount
for b in self.rotatable:
b.activeTors = 1
b.possibleTors = 1
for b in results['leaf']:
b.leaf = 1
for b in results['cycle']:
b.incycle = 1
hydrogenRotators = results['hydrogenRotators']
self.hydrogenRotators = hydrogenRotators
self.TORSDOF = self.torscount - len(hydrogenRotators)
ptAts = bc.dict['rotatable'].getAtoms(self.rotatable)
d = {}
for a in ptAts:
d[a] = 0
self.pTatomset = AtomSet(d.keys())
#print 'len(pTatomset=', len(self.pTatomset)
self.leafbonds = results['leaf']
self.pepbackbonds = results['ppbb']
self.amidebonds = results['amide']
self.cyclebonds = results['cycle']
return msg, nphs
def checkAromatics(self):
"""
checkAromatics
"""
#this depends on userPref useProteinAromaticList
if not len(self.cyclebonds):
self.aromaticCs = AtomSet()
return ""
if self.isPeptide and self.useProteinAromaticList:
self.aromaticCs = self.getPeptideAromatics()
return ""
if self.isPeptide:
self.getPeptideBondDict()
else:
self.getLigandBondDict()
counter = 0
while counter < self.cyclecount:
counter = counter + 1
blist = self.bondDict[counter]
for item in blist:
at = item.atom1
self._getAdjAtom(item, blist)
#now each bond has 3 atoms specified for it: its own two and the next1 to atom1
result = self._getNormal(item)
item.nrmsize = result[0]
item.nrms = result[1]
#next find the other bond w/atom2:
z2 = filter(lambda x,item=item, at2=item.atom2, blist=blist:x!=item and x.atom1==at2 or x.atom2==at2, blist)
#finally, return the other atom in this bond
item.nextbond2 = z2[0]
if item.nextbond2==item:
item.nextbond2 = z2[1]
neighbor2 = self._getnxtAtom(item.atom2,item.nextbond2)
item.next2 = neighbor2
#next have to check whether the normals are parallel
#check each pair in each bond, how to keep track??
#have to get normal at item's atom2: so have to get next2 for this bond:
#have to loop twice to make sure neighbor has nrms
for item in blist:
p = item.nrms
psize = item.nrmsize
q = item.nextbond2.nrms
qsize = item.nextbond2.nrmsize
#theta is the critical test for planarity:
#if angle between 2 nrms is 0, atoms are planar
#NB>test is comparing theta,cos(angle), w/zero
item.theta = Numeric.dot(p,q)/(psize*qsize)
for p in ['next1','next2','nextbond','nextbond2']:
delattr(item, p)
self.updateAromatics(self.aromaticCutOff)
msg = ' -found '+ str(len(self.aromaticCs)) + ' aromatic carbons\n'
return msg
def updateAromatics(self, cutoff):
self.aromaticCutOff = cutoff
#cutoff = self.aromaticCutOff
cutoffValue = math.cos(cutoff*math.pi/180.)
aromaticCs = AtomSet([])
atD = {}
#to keep from overwriting names of aromatic carbons at
#junctions of rings use this klug
for blist in self.bondDict.values():
for item in blist:
item.atom1.setThisTime = 0
item.atom2.setThisTime = 0
for blist in self.bondDict.values():
ct = 0
for item in blist:
#these are values for the default 7.5degrees:
#if theta>=0.997 or theta<=-0.997:
if item.theta>=cutoffValue or item.theta<=-cutoffValue:
item.posAromatic = 1
ct = ct + 1
else:
item.posAromatic = 0
#after checking all the bonds in current cycle, compare #posAromatic w/number
if ct==len(blist):
#and change the name and autodock_element here....
for b in blist:
at1 = b.atom1
at2 = b.atom2
if at1.element=='C':
at1.name = 'A' + at1.name[1:]
at1.autodock_element = 'A'
atD[at1] = 0
at1.setThisTime = 1
if at2.element=='C':
at2.name = 'A' + at2.name[1:]
at2.autodock_element = 'A'
atD[at2] = 0
at2.setThisTime = 1
aromaticCs = AtomSet(atD.keys())
else:
#if there were any aromatic carbons which no longer
#meet the criteria, change them back
for b in blist:
at1 = b.atom1
at2 = b.atom2
if at1.name[0]=='A' and not at1.setThisTime:
at2.autodock_element = 'C'
at1.name = 'C' + at1.name[1:]
if at2.name[0]=='A'and not at2.setThisTime:
at2.autodock_element = 'C'
at2.name = 'C' + at2.name[1:]
#remove klug
for blist in self.bondDict.values():
for item in blist:
if hasattr(item.atom1, 'setThisTime'):
delattr(item.atom1,'setThisTime')
if hasattr(item.atom2, 'setThisTime'):
delattr(item.atom2,'setThisTime')
for a in aromaticCs:
a.autodock_element = 'A'
self.aromaticCs = aromaticCs
def restoreCarbons(self):
for a in self.aromaticCs:
if len(a.name)==1:
a.name = 'C'
else:
a.name = 'C' + a.name[1:]
a.autodock_element = 'C'
def nameAromatics(self):
for a in self.aromaticCs:
if len(a.name)==1:
a.name = 'A'
else:
a.name = 'A' + a.name[1:]
a.autodock_element = 'A'
def addAromatic(self, at):
if at.element!='C':
print at.name, ' is not a carbon'
return 'ERROR'
if at in self.aromaticCs:
print at.name, ' is already in aromatic set'
return 'ERROR'
at.autodock_element = 'A'
self.aromaticCs.append(at)
print at.name, ' added to aromatic set'
def removeAromatic(self, at):
if at not in self.aromaticCs:
print at.name, ' is not in aromatic set'
return 'ERROR'
self.aromaticCs.remove(at)
at.autodock_element = 'C'
print at.name, ' removed from aromatic set'
def getPeptideAromatics(self):
atSet = AtomSet()
allAts = self.allAtoms
arom_ats = allAts.get(lambda x, l = pep_aromList:\
x.parent.type+'_'+x.name in l)
if not arom_ats:
return AtomSet([])
for at in arom_ats:
at.name = 'A' + at.name[1:]
at.autodock_element = 'A'
#print 'returning ', len(arom_ats), ' arom_ats'
return arom_ats
def getPeptideBondDict(self):
resSet = self.chains.residues.get(lambda x, \
d = aromDict.keys():x.type in d)
if not resSet:
return BondSet()
self.cyclecount = numres = len(resSet)
#NB: cyclenum is 1 based because 0 means not numbered
for i in range(numres):
res = resSet[i]
ats = res.atoms
#bondDict keys are 1 based too
keys = aromDict[res.type]
bnds = bondDict[i+1] = ats.get(lambda x, \
keys=keys:x.name in keys).bonds[0]
for b in bnds:
bnds.cyclenum = i + 1
self.bondDict = bondDict
def getLigandBondDict(self):
ats = self.allAtoms
babel = AtomHybridization()
babel.assignHybridization(self.allAtoms)
#typeBonds???
#typeAtoms(ats)
rf = RingFinder()
rf.findRings2(ats, ats.bonds[0])
ct = 1
bondDict = {}
for ring in rf.rings:
bondDict[ct] = ring['bonds']
for b in ring['bonds']:
b.cyclenum = ct
ct = ct + 1
self.cyclecount = rf.ringCount
self.bondDict = bondDict
def _numberCycle(self, at):
for b in at.bonds:
if hasattr(b,'incycle') and b.cyclenum==0 :
b.cyclenum = self.cyclecount
nxtAtom = b.atom1
if nxtAtom==at:
nxtAtom = b.atom2
self._numberCycle(nxtAtom)
def _getnxtAtom(self, at,b):
nxtAtom = b.atom1
if nxtAtom==at:
nxtAtom = b.atom2
return nxtAtom
def _getAdjAtom(self,b,z):
#first get the bonds in this cycle
at = b.atom1
#next find the other one with at as one of the atoms:
z2 = filter(lambda x,b=b,at=at,z=z:x!=b and x.atom1==at or x.atom2==at, z)
#finally, return the other atom in this bond
b.nextbond = z2[0]
neighbor = self._getnxtAtom(at,z2[0])
b.next1 = neighbor
def _getNormal(self,b):
at1 = b.next1
at2 = b.atom1
at3 = b.atom2
pt1 = at1.coords
pt2 = at2.coords
pt3 = at3.coords
a = Numeric.subtract(pt2,pt1)
b = Numeric.subtract(pt3,pt2)
p = (a[1]*b[2]-a[2]*b[1],a[2]*b[0]-a[0]*b[2],a[0]*b[1]-a[1]*b[0])
nrmsize = Numeric.sqrt(p[0]*p[0]+p[1]*p[1]+p[2]*p[2])
return (nrmsize, p)
def setroot(self, atom):
"""
setroot to 'C11' or 'hsg1:A:ILE2:CA'
"""
if type(atom)==types.StringType:
if find(atom, ':')>-1:
#have to use full_name list
#check that it is an atom
mols = ProteinSet([self])
nodes = mols.NodesFromName(atom)
if not nodes:
return 'invalid root name'
if nodes.__class__!=AtomSet:
return 'invalid root name: not atom level'
else:
nodes = self.allAtoms.get(lambda x, n = atom:x.name==n)
if not nodes:
return 'invalid root name'
if len(nodes)>1:
return 'root name must be unique'
atom = nodes[0]
elif type(atom)!=types.InstanceType:
return atom, ' invalid root atom'
elif atom.__class__!=Atom:
return atom, ' can only select an Atom instance as root'
#fix this rnum0 stuff
#in case toggling back and forth
if hasattr(self, 'autoRoot') and hasattr(self.autoRoot, 'rnum0'):
delattr(self.autoRoot, 'rnum0')
#if there is an old root, remove rnum0
if hasattr(self, 'ROOT') and hasattr(self.ROOT, 'rnum0'):
delattr(self.ROOT, 'rnum0')
self.ROOT = atom
self.ROOT.rnum0 = 0
return self.ROOT
def autoroot(self):
"""
autoRoot
"""
#clear old root
if hasattr(self, 'ROOT') and hasattr(self.ROOT, 'rnum0'):
delattr(self.ROOT, 'rnum0')
if hasattr(self, 'autoRoot'):
self.ROOT = self.autoRoot
self.ROOT.rnum0 = 0
return
if len(self.chains)>1:
return "AutoRoot not implemented for molecules with >1 chain"
self.bestBranch = len(self.allAtoms)
bestList = []
for item in self.allAtoms:
if not hasattr(item, 'bonds'): continue
if len(item.bonds)==1 and item.bonds[0].leaf: continue
if hasattr(item,'leaf'): continue
item.maxbranch = 0
for b in item.bonds:
nxtAtom = self._getnxtAtom(item,b)
if not b.leaf:
thistree = self.subTree(item,nxtAtom, self.allAtoms)
thisbranch = len(thistree)
if thisbranch>item.maxbranch:
item.maxbranch = thisbranch
#bestList holds all current best choices for Root..
if item.maxbranch<self.bestBranch:
bestList = []
bestList.append(item)
self.bestBranch = item.maxbranch
if item.maxbranch==self.bestBranch and item not in bestList:
bestList.append(item)
if len(bestList)>1:
foundCycle = 0
for at in bestList:
at.cycleatom = 0
for b in at.bonds:
#4/29: peptides won't have aromatic
#but will have incycle
#if b.bondOrder=='aromatic':
if hasattr(b,'incycle'):
at.cycleatom = 1
continue
for at in bestList:
if at.cycleatom:
self.ROOT = at
self.autoRoot = at
self.ROOT.rnum0 =0
foundCycle = 1
break
#if bestList had a cycle atom, it's been set to root..if NOT:
if not foundCycle:
self.autoRoot = bestList[0]
self.ROOT = bestList[0]
self.ROOT.rnum0 =0
#no ties for possible root, use bestRoot...
else:
self.autoRoot = bestList[0]
self.ROOT = bestList[0]
self.ROOT.rnum0 =0
return self.ROOT
def buildTorsionTree(self):
if not hasattr(self, 'ROOT'):
print 'must set ROOT first!'
return
self.torTree = TorTree(self.parser, self.ROOT)
def turnOnTorsion(self, bnd):
"""
turnOnTorsion
"""
if not bnd in self.rotatable:
return
#this is redundant (??)
if not bnd.possibleTors:
return
if not bnd.activeTors:
self.torscount = self.torscount + 1
bnd.activeTors = 1
self.torTree.addTorsion(bnd.atom1.number, bnd.atom2.number)
def turnOffTorsion(self, bnd):
"""
turnOffTorsion
"""
if not bnd in self.rotatable:
return
#this is redundant (??)
if not bnd.possibleTors:
return
if bnd.activeTors:
self.torscount = self.torscount - 1
bnd.activeTors = 0
self.torTree.removeTorsion(bnd.atom1.number, bnd.atom2.number)
def limitTorsions(self, numTors, type, simpleModel=1):
"""sets number of torsions to specified number by inactivating either those which
move the fewest atoms or those which move the most. if number is > than
current but less than possible, torsions are reactivated
"""
print 'lT: numTors=', numTors, ' type=', type
allAts = self.allAtoms
root = self.ROOT
torscount = self.torscount
print 'torscount=', torscount,
#NB: torscount is not necessarily the max
#ie it could have been adjusted already
at0 = self.allAtoms[0]
if not hasattr(self, 'torTree') or not hasattr(at0, 'tt_ind'):
self.torTree = TorTree(self.parser, root)
torsionMap = self.torTree.torsionMap
torsionMapNum = len(torsionMap)
print 'len(tm)=', torsionMapNum
possibleTors = self.possible_torscount
if simpleModel:
self.setTorsions(numTors, type)
return
#FIX THIS: what if want to increase active torsions
if torscount==numTors:
msg = 'specified number==number present: no adjustment'
return 'msg'
elif torscount<numTors:
if torscount==possibleTors:
#if torscount==torsionMapNum:
msg = 'specified number == number possible: no adjustment'
return msg
else:
#in this case turn on as many as possible
#if numTors>=torsionMapNum:
if numTors>=possibleTors:
#turn on everything
delta = possibleTors - torscount
#delta = torsionMapNum - torscount
else:
delta = numTors - torscount
self.turnOnTorsions(delta, type)
else:
#torscount>numTors
#in this case turn them off
delta = torscount - numTors
self.turnOffTorsions(delta, type)
msg = str(delta) + ' torsions changed'
return msg
def setTorsions(self, numTors, type):
#this assumes atoms have tt_ind field
tNum = len(self.torTree.base_torsionMap)
msg = ""
if numTors>tNum:
msg = 'too many torsions specified! '+ str(numTors)+ ' reducing to'+str(tNum)
numTors = tNum
if type=='fewest':
rangeList = range(numTors)
else:
rangeList = []
for k in range(1, numTors+1):
rangeList.append(-k)
#turn them all off
baseTorsionMap = self.torTree.base_torsionMap
torsionMap = self.torTree.torsionMap
#turn all active nodes off
active_nodes = torsionMap[:]
for node in active_nodes:
#print 'turning off node ', node.number
self.torTree.removeTorsion(node.bond[0], node.bond[1])
b = self.allAtoms.get(lambda x, node=node: x.tt_ind in node.bond).bonds[0][0]
b.activeTors = 0
#turn on the right number at correct end
for i in rangeList:
node = baseTorsionMap[i]
#print '2:turning on node ', node.number
self.torTree.addTorsion(node.bond[0], node.bond[1])
b = self.allAtoms.get(lambda x, node=node: x.tt_ind in node.bond).bonds[0][0]
b.activeTors = 1
#print 'now len(torsionMap)=', len(torsionMap)
self.torscount = numTors
return msg
def turnOnTorsions(self, delta, type = 'fewest'):
allAts = self.allAtoms
torsionMap = self.torTree.torsionMap
baseTorsionMap = self.torTree.base_torsionMap
torscount = self.torscount
#turn on delta torsions + adjust torscount in dict
if type=='fewest':
rangeList = range(delta)
else:
rangeList = []
for k in range(1, delta+1):
rangeList.append(-k)
#FIX THIS: probably doesn't work
for i in rangeList:
node = baseTorsionMap[i]
b = allAts.get(lambda x, node=node: x.tt_ind in node.bond).bonds[0][0]
if not b.activeTors:
self.torTree.addTorsion(node.bond[0], node.bond[1])
b.activeTors = 1
else:
lastInd = rangeList[-1]
if type=='fewest':
rangeList.append(lastInd+1)
else:
rangeList.append(lastInd-1)
#torscount should be torscount + delta here
self.torscount = torscount + delta
def turnOffTorsions(self, delta, type = 'fewest'):
allAts = self.allAtoms
torsionMap = self.torTree.torsionMap
baseTorsionMap = self.torTree.base_torsionMap
torscount = self.torscount
#turn on delta torsions + adjust torscount in dict
if type=='fewest':
rangeList = range(delta)
else:
rangeList = []
for k in range(1, delta+1):
rangeList.append(-k)
for i in rangeList:
node = baseTorsionMap[i]
if node.bond==(None,None):
print 'error in turnOff torsions with ', rangeList
break
b = allAts.get(lambda x, node=node: x.tt_ind in node.bond).bonds[0][0]
if b.activeTors:
self.torTree.removeTorsion(node.bond[0], node.bond[1])
b.activeTors = 0
else:
lastInd = rangeList[-1]
if type=='fewest':
rangeList.append(lastInd+1)
else:
rangeList.append(lastInd-1)
self.torscount = torscount - delta
def setCarbonName(self, at):
"""
setCarbonName
"""
if not at.element=='C':
return
if len(at.name)==1:
at.name = 'C'
else:
at.name = 'C' + at.name[1:]
def setAromaticName(self, at):
"""
setAromaticName
"""
if not at.element=='C':
return
if len(at.name)==1:
at.name = 'A'
else:
at.name = 'A' + at.name[1:]
# NOTE each line has filename and list of indices
# NOTE the first entry is the reference
# NOTE THE NUMBER OF INDICES must match,indices must be comma-separated
# (with NO intervening spaces)
#read the data file
fptr = open(data_filename)
lines = fptr.readlines()
fptr.close()
#setup the reference molecule
from MolKit import Read
from MolKit.molecule import AtomSet
ref_name, ref_ll = lines[0].split()
ref_mol = Read(ref_name)[0]
ref_ats = AtomSet()
ref_indices = map(int, ref_ll.split(','))
num_ref_indices = len(ref_indices)
if num_ref_indices<3:
print " At least 3 indices are required! only %d indices found!!!"%(num_ref_indices)
exit()
for i in ref_indices:
#ref_ats.append(ref_mol.allAtoms[i-1])
ref_ats.append(ref_mol.allAtoms.get(lambda x: x.number==i)[0])
num_ref_ats = len(ref_ats)
#setup the tool for the rigid fit
from mglutil.math.rigidFit import RigidfitBodyAligner
RFA = RigidfitBodyAligner()
RFA.setRefCoords(ref_ats.coords)
def nextFrame(self, id):
#Player.nextFrame(self, id)
id = int(id)
if id == self.currentFrameIndex: return
if self.hasCounter and self.gui:
self.form.ent2.delete(0,'end')
self.form.ent2.insert(0, str(id))
if self.hasSlider:
self.form.ifd.entryByName['slider']['widget'].set(id)
self.currentFrameIndex = int(id)
removeAtoms = AtomSet([])
addAtoms = AtomSet([])
id = int(id)
flood = self.floods[id]
centers = []
materials = []
radii = []
prev_coords = self.mol.allAtoms.coords
lenAtoms = len(prev_coords)
#self.residue.atoms = AtomSet([])
index = 0
#h = self.hp.heap()
#print h
for fl in flood:
x = (fl[1] - self.xcent)*self.spacing + self.centerx
y = (fl[2] - self.ycent)*self.spacing + self.centery
z = (fl[3] - self.zcent)*self.spacing + self.centerz
if fl[4] == 7:
atomchr = 'P'
# note, this will color the NA atom pink (the PDB color for Phosphorus)
radius = AAradii[13][0]
if fl[4] == 6:
atomchr = 'S'
radius = AAradii[13][0]
if fl[4] == 5:
atomchr = 'A'
radius = AAradii[10][0]
if fl[4] == 4:
atomchr = 'O'
radius = AAradii[1][0]
if fl[4] == 3:
atomchr = 'N'
radius = AAradii[4][0]
if fl[4] == 2:
atomchr = 'C'
radius = AAradii[10][0]
if fl[4] == 1:
atomchr = 'H'
radius = AAradii[15][0]
if not [x,y,z] in prev_coords:
a = Atom(atomchr, self.residue, atomchr, top=self.mol)
a._coords = [[x,y,z]]
a._charges = {}
a.hetatm = 1
a.radius = radius
#a.number = lenAtoms + 1
addAtoms.append(a)
lenAtoms += 1
for key in self.colorKeys:
a.colors[key]=AtomElements[atomchr]
a.opacities[key]=1.0
else:
centers.append([x,y,z])
# a = Atom(atomchr, self.residue, atomchr, top=self.mol)
# a._coords = [[x,y,z]]
# a._charges = {}
# a.hetatm = 1
# a.number = index
# index += 1
#aterials.append(AtomElements[atomchr])
#enters.append([x,y,z])
#adii.append(radius)
#self.mol.allAtoms = self.residue.atoms
#self.mol.geomContainer.geoms['lines'].protected = False
#for com in self.autoLigandCommand.vf.cmdsWithOnAddObj:
# com.onAddObjectToViewer(self.mol)
#self.autoLigandCommand.vf.displayCPK(self.mol, scaleFactor=0.1)
halo_centers = []
for coord in prev_coords:
if not coord in centers:
index = prev_coords.index(coord)
removeAtoms.append(self.mol.allAtoms[index])
self.residue.assignUniqIndex() #this is needed to avoid Traceback later on
self.mol.allAtoms.stringRepr = None #stringRepr can be very large aousing memory errors
event = AddAtomsEvent(objects=addAtoms)
#self.autoLigandCommand.vf.dispatchEvent(event)
self.autoLigandCommand.vf.displayCPK.updateGeom(event)
event = DeleteAtomsEvent(objects=removeAtoms)
#self.autoLigandCommand.vf.dispatchEvent(event)
self.autoLigandCommand.vf.displayCPK.updateGeom(event)
for atom in removeAtoms:
self.residue.atoms.remove(atom)
if id == self.maxFrame:
self.autoLigandCommand.halo.Set(visible=0)
else:
self.autoLigandCommand.halo.Set(centers=addAtoms.coords, materials=((1,1,0,0.5),), radii=0.4)
class AddBondsGUICommand(MVCommand, MVAtomICOM):
"""
The AddBondGUICommand provides an interactive way of creating bonds between two given atoms by picking on them. To use this command you need first to load it into PMV. Then you can find the entry 'addBonds' under the Edit menu. To add bonds you just need to pick on the 2 atoms you want to bind. If you drag select a bunch of atoms, the command will buildBondsByDistance between them.This command is undoable.
\nPackage : Pmv
\nModule : bondsCommands
\nClass : AddBondsGUICommand
\nCommand : addBondsGC
\nSynopsis:\n
None<-addBondsGC(atoms)\n
\nRequired Arguments:\n
atoms : atom(s)\n
"""
def __init__(self, func=None):
MVCommand.__init__(self, func)
MVAtomICOM.__init__(self)
self.atomList = AtomSet([])
self.undoAtList = AtomSet([])
self.labelStrs = []
def onRemoveObjectFromViewer(self, obj):
removeAts = AtomSet([])
for at in self.atomList:
if at in obj.allAtoms:
removeAts.append(at)
self.atomList = self.atomList - removeAts
removeAts = AtomSet([])
for at in self.undoAtList:
if at in obj.allAtoms:
removeAts.append(at)
self.undoAtList = self.undoAtList - removeAts
self.update()
def onAddCmdToViewer(self):
if not self.vf.commands.has_key('setICOM'):
self.vf.loadCommand('interactiveCommands', 'setICOM', 'Pmv',
topCommand=0)
if not self.vf.commands.has_key('addBonds'):
self.vf.loadCommand('bondsCommands', 'addBonds', 'Pmv',
topCommand=0)
if not self.vf.commands.has_key('removeBondsGC'):
self.vf.loadCommand('bondsCommands', 'removeBondsGC', 'Pmv',
topCommand=0)
self.masterGeom = Geom('addBondsGeom',shape=(0,0),
pickable=0, protected=True)
self.masterGeom.isScalable = 0
self.spheres = Spheres(name='addBondsSpheres', shape=(0,3),
inheritMaterial=0,
radii=0.2, quality=15,
materials = ((1.,1.,0.),), protected=True)
if not self.vf.commands.has_key('labelByExpression'):
self.vf.loadCommand('labelCommands',
['labelByExpression',], 'Pmv', topCommand=0)
if self.vf.hasGui:
miscGeom = self.vf.GUI.miscGeom
self.vf.GUI.VIEWER.AddObject(self.masterGeom, parent=miscGeom)
self.vf.GUI.VIEWER.AddObject(self.spheres, parent=self.masterGeom)
def __call__(self, atoms, **kw):
"""None<-addBondsGC(atoms)
\natoms : atom(s)"""
if type(atoms) is StringType:
self.nodeLogString = "'"+atoms+"'"
ats = self.vf.expandNodes(atoms)
if not len(ats): return 'ERROR'
return apply(self.doitWrapper, (ats,), kw)
def doit(self, ats):
if len(ats)>2:
if len(self.atomList):
atSet = ats + self.atomList
else: atSet = ats
parent = atSet[0].parent
parent.buildBondsByDistanceOnAtoms(atSet)
self.atomList = AtomSet([])
self.update(True)
else:
lenAts = len(self.atomList)
last = None
if lenAts:
last = self.atomList[-1]
top = self.atomList[0].top
for at in ats:
#check for repeats of same atom
if lenAts and at==last:
continue
#lenAts = len(self.atomList)
#if lenAts and at==self.atomList[-1]:
# continue
if lenAts and at.top!=self.atomList[-1].top:
msg = "intermolecular bond to %s disallowed"%(at.full_name())
self.warningMsg(msg)
self.atomList.append(at)
self.undoAtList.append(at)
lenAts = len(self.atomList)
self.update(True)
#if only have one atom, there is nothing else to do
if lenAts<2: return
#now build bonds between pairs of atoms
atSet = self.atomList
if lenAts%2!=0:
atSet = atSet[:-1]
#all pairs of atoms will be bonded
#so keep only the last one
self.atomList = atSet[-1:]
lenAts = lenAts -1
else:
self.vf.labelByExpression(self.atomList, negate=1, topCommand=0)
self.atomList = AtomSet([])
for i in range(0, lenAts, 2):
at1 = atSet[i]
at2 = atSet[i+1]
self.vf.addBonds(at1, at2, origin='UserDefined', topCommand=0)
self.update(True)
def applyTransformation(self, pt, mat):
pth = [pt[0], pt[1], pt[2], 1.0]
return Numeric.dot(mat, pth)[:3]
def getTransformedCoords(self, atom):
if not atom.top.geomContainer:
return atom.coords
g = atom.top.geomContainer.geoms['master']
c = self.applyTransformation(atom.coords, g.GetMatrix(g))
return c.astype('f')
def update(self, event=None):
if not len(self.atomList):
self.spheres.Set(vertices=[], tagModified=False)
self.vf.labelByExpression(self.atomList, negate=1, topCommand=0)
if self.vf.hasGui:
self.vf.GUI.VIEWER.Redraw()
return
self.lineVertices=[]
#each time have to recalculate lineVertices
for at in self.atomList:
c1 = self.getTransformedCoords(at)
self.lineVertices.append(tuple(c1))
if event:
self.spheres.Set(vertices=self.lineVertices, tagModified=False)
self.vf.labelByExpression(self.atomList,
function = 'lambda x: x.full_name()',
lambdaFunc = 1,
textcolor = 'yellow',
format = '', negate = 0,
location = 'Last', log = 0,
font = 'arial1.glf', only = 1,
topCommand=0)
#setting spheres doesn't trigger redraw so do it explicitly
if self.vf.hasGui:
self.vf.GUI.VIEWER.Redraw()
def guiCallback(self, event=None):
self.save = self.vf.ICmdCaller.commands.value["Shift_L"]
self.vf.setICOM(self, modifier="Shift_L", topCommand=0)
def setupUndoAfter(self, ats, **kw):
lenUndoAts = len(self.undoAtList)
lenAts = len(ats)
if lenAts==1:
#after adding 1 self.atomList would be 1 or 0
if len(self.atomList)==1:
s = '0'
ustr='"c=self.addBondsGC; self.labelByExpression(c.atomList, negate=1, topCommand=0);c.atomList=c.atomList[:'+s+'];c.undoAtList=c.undoAtList[:-1];c.update()"'
else:
self.vf.undoCmdStack.remove(self.prev_undoCmds)
ind = str(lenUndoAts - 2)
ustr = '"c=self.addBondsGC;nodes=self.expandNodes('+'\''+self.undoAtList[-2:].full_name()+'\''+'); bonds=nodes.bonds[0];self.removeBondsGC(bonds, topCommand=0);c.atomList=nodes[:1];c.undoAtList=c.undoAtList[:'+ind+'];c.update()"'
elif lenUndoAts>lenAts:
ustr='"c=self.addBondsGC;nodes=self.expandNodes('+'\''+ats.full_name()+'\''+');bonds = nodes.bonds[0];self.removeBondsGC(bonds, topCommand=0);c.undoAtList=c.undoAtList[:'+str(lenAts)+']"'
else:
ustr='"c=self.addBondsGC;nodes=self.expandNodes('+'\''+ats.full_name()+'\''+');bonds = nodes.bonds[0];self.removeBondsGC(bonds, topCommand=0);c.undoAtList=c.undoAtList[:0]"'
if len(self.atomList) and lenAts>1:
atStr = self.atomList.full_name()
estr = ';nodes=self.expandNodes('+'\''+self.atomList.full_name()+'\''+');c.atomList=nodes;c.update()"'
ustr = ustr + estr
self.undoCmds = "exec("+ustr+")"
self.prev_undoCmds = (self.undoCmds, "addBondsGC")
def startICOM(self):
self.vf.setIcomLevel( Atom, topCommand=0)
def stopICOM(self):
if len(self.atomList)!=0:
self.vf.labelByExpression(self.atomList, negate=1, topCommand = 0)
del self.atomList[:]
self.labelStrs = []
self.spheres.Set(vertices=[], tagModified=False)
self.vf.GUI.VIEWER.Redraw()
self.save = None
def getBondedAtoms(atom):
l = AtomSet()
for b in atom.bonds:
l.append(b.neighborAtom(atom))
return l
def getDonors(self, nodes, paramDict):
donorList = paramDict['donorTypes']
#print 'donorList=', donorList
# currently this is a set of hydrogens
hats = AtomSet(nodes.get(lambda x: x.element=='H'))
#hats are optional: if none, process donors
# if there are hats: dAts are all atoms bonded to all hydrogens
if hats:
dAts = AtomSet([])
for at in hats:
for b in at.bonds:
at2 = b.atom1
if id(at2)==id(at): at2 = b.atom2
dAts.append(at2)
#dAts.append(b.neighborAtom(at))
else:
dAts = nodes
#get the sp2 hybridized possible donors which are all ns
sp2 = []
for t in ['Nam', 'Ng+', 'Npl']:
if t in donorList:
sp2.append(t)
#ntypes = ['Nam', 'Ng+', 'Npl']
sp2DAts = None
if len(sp2):
sp2DAts = AtomSet(dAts.get(lambda x, sp2=sp2: x.babel_type in sp2))
hsp2 = AtomSet([])
if sp2DAts:
if hats:
hsp2 = AtomSet(hats.get(lambda x, sp2DAts=sp2DAts:x.bonds[0].atom1 \
in sp2DAts or x.bonds[0].atom2 in sp2DAts))
if sp2DAts:
#remove any sp2 N atoms which already have 3 bonds not to hydrogens
n2Dons = AtomSet(sp2DAts.get(lambda x: x.element=='N'))
if n2Dons:
n2Dons.bl=0
for at in n2Dons:
for b in at.bonds:
if type(b.bondOrder)==type(2):
at.bl = at.bl + b.bondOrder
else:
at.bl = at.bl + 2
#allow that there might already be a hydrogen
nH = at.findHydrogens()
at.bl = at.bl - len(nH)
badAts = AtomSet(n2Dons.get(lambda x: x.bl>2))
if badAts:
sp2DAts = sp2DAts - badAts
delattr(n2Dons,'bl')
#get the sp3 hybridized possible donors
sp3 = []
for t in ['N3+', 'S3', 'O3']:
if t in donorList:
sp3.append(t)
n3DAts = None
if 'N3+' in sp3:
n3DAts = AtomSet(dAts.get(lambda x: x.babel_type=='N3+'))
o3DAts = None
if 'O3' in sp3:
o3DAts = AtomSet(dAts.get(lambda x: x.babel_type=='O3'))
if o3DAts:
#remove any O3 atoms which already have 2 bonds not to hydrogens
badO3s = AtomSet([])
for at in o3DAts:
if len(at.bonds)<2: continue
if len(at.findHydrogens()): continue
else:
badO3s.append(at)
if len(badO3s):
o3DAts = o3DAts - badO3s
s3DAts = None
if 'S3' in sp3:
s3DAts = AtomSet(dAts.get(lambda x: x.babel_type=='S3'))
sp3DAts = AtomSet([])
for item in [n3DAts, o3DAts, s3DAts]:
if item:
sp3DAts = sp3DAts + item
hsp3 = AtomSet([])
if sp3DAts:
if hats:
hsp3 = AtomSet(hats.get(lambda x, sp3DAts=sp3DAts:x.bonds[0].atom1 \
in sp3DAts or x.bonds[0].atom2 in sp3DAts))
hsp = hsp2 + hsp3
#print 'hsp=', hsp.name
#print 'sp2DAts=', sp2DAts.name
#print 'sp3DAts=', sp3DAts.name
return hsp, sp2DAts, sp3DAts
mol.buildBondsByDistance()
mol.LPO = AD4LigandPreparation(mol, mode='interactive', repairs='', charges_to_add=None,
root=0, outputfilename=outputfilename, cleanup='')
#rebuild torTree
allAts = mol.allAtoms
for b in allAts.bonds[0]:
if b.activeTors: b.activeTors = 0
torscount = 0
tM = mol.torTree.torsionMap
for i in range(len(tM)):
bnum0, bnum1 = tM[i].bond
a0 = allAts.get(lambda x: x.number==bnum0 + 1)[0]
a0.tt_ind = bnum0
a1 = allAts.get(lambda x: x.number==bnum1 + 1)[0]
a1.tt_ind = bnum1
b = AtomSet([a0,a1]).bonds[0]
if hasattr(b, 'possibleTors'):
assert b.possibleTors
else:
b.possibleTors = 1
b.activeTors = 1
torscount = torscount + 1
mol.torscount = torscount
mol.ROOT = mol.allAtoms[0]
mol.ROOT.rnum0 = 0
mol.LPO.write(outputfilename)
# To execute this command type:
# repair_ligand4.py -f pdbqt_filename [-o outputfilename] -v
def addHydrogens(self, mol):
#check for bonds
if len(mol.allAtoms.bonds[0])==0:
mol.buildBondsByDistance()
bonds = mol.allAtoms.bonds[0]
#could have preset babel_types
#so check if allAtoms are already typed
try:
t = mol.allAtoms.babel_type
except:
#if all are not pretyped, type them
babel = AtomHybridization()
babel.assignHybridization(mol.allAtoms)
if self.method=='withBondOrder':
mol.rings = RingFinder()
mol.rings.findRings2(mol.allAtoms, mol.allAtoms.bonds[0])
mol.rings.bondRings = {}
for ind in xrange(len(mol.rings.rings)):
r = mol.rings.rings[ind]
for b in r['bonds']:
if not mol.rings.bondRings.has_key(b):
mol.rings.bondRings[b] = [ind,]
else:
mol.rings.bondRings[b].append(ind)
bo = BondOrder()
bo.assignBondOrder(mol.allAtoms, bonds, mol.rings)
mol.allAtoms._bndtyped = 1
# do aromatic here
arom = Aromatic(mol.rings)
arom.find_aromatic_atoms(mol.allAtoms)
hat = AddHydrogens().addHydrogens(mol.allAtoms, method=self.method)
bondedAtomDict = {} # key is heavy atom
for a in hat:
if bondedAtomDict.has_key(a[1]):
bondedAtomDict[a[1]].append(a)
else:
bondedAtomDict[a[1]] = [a]
# now create Atom object for hydrogens
# and add the to the residues's atom list
molNewHs = AtomSet([]) # list of created H atoms for this molecule
heavyAtoms = AtomSet([]) # list of atoms that need new radii
for heavyAtom, HatmsDscr in bondedAtomDict.items():
#don't add hydrogens to carbons: polar Only!!!
if self.htype!='all' and heavyAtom.element=='C':
continue
res = heavyAtom.parent
# find where to insert H atom
childIndex = res.children.index(heavyAtom)+1
# loop over H atoms description to be added
# start at the end to number correctly
l = len(HatmsDscr)
for i in range(l-1,-1,-1):
a = HatmsDscr[i]
# build H atom's name
if len(heavyAtom.name)==1:
name = 'H' + heavyAtom.name
else:
name = 'H' + heavyAtom.name[1:]
# if more than 1 H atom, add H atom index
# for instance HD11, HD12, Hd13 (index is 1,2,3)
if l > 1:
name = name + str(i+1)
# create the H atom object
atom = Atom(name, res, top=heavyAtom.top,
chemicalElement='H',
childIndex=childIndex, assignUniqIndex=0)
# set atoms attributes
atom._coords = [ a[0] ]
if hasattr(a[1], 'segID'): atom.segID = a[1].segID
atom.hetatm = 0
atom.alternate = []
#atom.element = 'H'
atom.occupancy = 1.0
atom.conformation = 0
atom.temperatureFactor = 0.0
atom.babel_atomic_number = a[2]
atom.babel_type = a[3]
atom.babel_organic = 1
atom.radius = 1.2
# create the Bond object bonding Hatom to heavyAtom
bond = Bond( a[1], atom, bondOrder=1)
# add the created atom the the list
molNewHs.append(atom)
# in case this new hydrogen atom ever ends up in pmv
# HAVE TO CREATE THESE ENTRIES
# create the color entries for all geoemtries
# available for the heavyAtom
for key, value in heavyAtom.colors.items():
atom.colors[key]=(0.0, 1.0, 1.0)
atom.opacities[key]=1.0
mol.allAtoms = mol.chains.residues.atoms
if self.renumber:
mol.allAtoms.number = range(1, len(mol.allAtoms)+1)
return len(molNewHs)
def __init__(self, func=None):
MVCommand.__init__(self, func)
MVAtomICOM.__init__(self)
self.atomList = AtomSet([])
self.undoAtList = AtomSet([])
self.labelStrs = []
def detectPiInteractions(self, tolerance=0.95, debug=False, use_all_cycles=False):
if debug: print "in detectPiInteractions"
self.results['pi_pi'] = [] #stacked rings...?
self.results['t_shaped'] = [] #one ring perpendicular to the other
self.results['cation_pi'] = [] #
self.results['pi_cation'] = [] #
self.results['macro_cations'] = []#
self.results['lig_cations'] = [] #
#at this point have self.results
if not len(self.results['lig_close_atoms']):
return
lig_atoms = self.results['lig_close_atoms'].parent.uniq().atoms
macro_res = self.results['macro_close_atoms'].parent.uniq()
if not len(macro_res):
return
macro_atoms = macro_res.atoms
l_rf = RingFinder()
#Ligand
l_rf.findRings2(lig_atoms, lig_atoms.bonds[0])
#rf.rings is list of dictionaries, one per ring, with keys 'bonds' and 'atoms'
if debug: print "LIG: len(l_rf.rings)=", len(l_rf.rings)
if not len(l_rf.rings):
if debug: print "no lig rings found by l_rf!"
return
acbs = self.aromatic_cycle_bond_selector
#acbs = AromaticCycleBondSelector()
lig_rings = []
for r in l_rf.rings:
ring_bnds = r['bonds']
if use_all_cycles:
lig_rings.append(ring_bnds)
else:
arom_bnds = acbs.select(ring_bnds)
if len(arom_bnds)>4:
lig_rings.append(arom_bnds)
if debug: print "LIG: len(lig_arom_rings)=", len(lig_rings)
self.results['lig_rings'] = lig_rings
self.results['lig_ring_atoms'] = AtomSet()
#only check for pi-cation if lig_rings exist
if len(lig_rings):
macro_cations = self.results['macro_cations'] = self.getCations(macro_atoms)
macro_cations = macro_cations.get(lambda x: x.element!='H')
lig_ring_atoms = AtomSet()
u = {}
for r in lig_rings:
for a in BondSet(r).getAtoms():
u[a] = 1
if len(u):
lig_ring_atoms = AtomSet(u.keys())
lig_ring_atoms.sort()
self.results['lig_ring_atoms'] = lig_ring_atoms
if len(macro_cations):
if debug: print "check distances from lig_rings to macro_cations here"
#macro cations->lig rings
pairDict2 = self.distanceSelector.select(lig_ring_atoms,macro_cations)
z = {}
for key,v in pairDict2.items():
val = v.tolist()[0]
if val in macro_cations:
z[val] = [key]
if len(z):
self.results['pi_cation'] = (z.items())
else:
self.results['pi_cation'] = []
#check the distance between the rings and the macro_cations
self.results['lig_cations'] = self.getCations(lig_atoms)
lig_cations = self.results['lig_cations']
#remove hydrogens
lig_cations = lig_cations.get(lambda x: x.element!='H')
#Macromolecule
m_rf = RingFinder()
m_rf.findRings2(macro_res.atoms, macro_res.atoms.bonds[0])
#rf.rings is list of dictionaries, one per ring, with keys 'bonds' and 'atoms'
if debug: print "MACRO: len(m_rf.rings)=", len(m_rf.rings)
if not len(m_rf.rings):
if debug: print "no macro rings found by m_rf!"
return
macro_rings = []
for r in m_rf.rings:
ring_bnds = r['bonds']
if use_all_cycles:
macro_rings.append(ring_bnds)
else:
arom_bnds = acbs.select(ring_bnds)
if len(arom_bnds)>4:
macro_rings.append(arom_bnds)
if debug: print "len(macro_arom_rings)=", len(macro_rings)
self.results['macro_rings'] = macro_rings
self.results['macro_ring_atoms'] = AtomSet()
#only check for pi-cation if macro_rings exist
if len(macro_rings):
macro_ring_atoms = AtomSet()
u = {}
for r in macro_rings:
for a in BondSet(r).getAtoms(): #new method of bondSets
u[a] = 1
if len(u):
macro_ring_atoms = AtomSet(u.keys())
macro_ring_atoms.sort()
self.results['macro_ring_atoms'] = macro_ring_atoms
if len(lig_cations):
if debug: print "check distances from macro_rings to lig_cations here"
pairDict3 = self.distanceSelector.select(macro_ring_atoms,lig_cations)
z = {}
for x in pairDict3.items():
#lig cations->macro rings
z.setdefault(x[1].tolist()[0], []).append(x[0])
if len(z):
self.results['cation_pi'] = (z.items())
else:
self.results['cation_pi'] = []
#macro_pi_atoms = AtomSet(pairDict3.keys())
#l_cations = AtomSet()
#for v in pairDict3.values():
# for x in v:
# l_cations.append(x)
#self.results['cation_pi'] = pairDict3.items()
#self.results['cation_pi'] = (l_cations, macro_pi_atoms)
#check for intermol distance <6 Angstrom (J.ComputChem 29:275-279, 2009)
#compare each lig_ring vs each macro_ring
for lig_ring_bnds in lig_rings:
lig_atoms = acbs.getAtoms(lig_ring_bnds)
lig_atoms.sort()
if debug: print "len(lig_atoms)=", len(lig_atoms)
#---------------------------------
# compute the normal to lig ring
#---------------------------------
a1 = Numeric.array(lig_atoms[0].coords)
a2 = Numeric.array(lig_atoms[2].coords)
a3 = Numeric.array(lig_atoms[4].coords)
if debug: print "a1,a2, a3=", a1.tolist(), a2.tolist(), a3.tolist()
for macro_ring_bnds in macro_rings:
macro_atoms = acbs.getAtoms(macro_ring_bnds)
macro_atoms.sort()
if debug: print "len(macro_atoms)=", len(macro_atoms)
pD_dist = self.distanceSelectorWithCutoff.select(macro_ring_atoms, lig_atoms, cutoff=self.dist_cutoff)
if not len(pD_dist[0]):
if debug:
print "skipping ligand ring ", lig_rings.index(lig_ring_bnds), " vs ",
print "macro ring", macro_rings.index(macro_ring_bnds)
continue
#---------------------------------
# compute the normal to macro ring
#---------------------------------
b1 = Numeric.array(macro_atoms[0].coords)
b2 = Numeric.array(macro_atoms[2].coords)
b3 = Numeric.array(macro_atoms[4].coords)
if debug: print "b1,b2, b3=", b1.tolist(), b2.tolist(), b3.tolist()
# check for stacking
a2_1 = a2-a1
a3_1 = a3-a1
b2_1 = b2-b1
b3_1 = b3-b1
if debug: print "a2_1 = ", a2-a1
if debug: print "a3_1 = ", a3-a1
if debug: print "b2_1 = ", b2-b1
if debug: print "b3_1 = ", b3-b1
n1 = crossProduct(a3_1,a2_1) #to get the normal for the first ring
n2 = crossProduct(b3_1,b2_1) #to get the normal for the second ring
if debug: print "n1=", n1
if debug: print "n2=", n2
n1 = Numeric.array(n1)
n2 = Numeric.array(n2)
n1_dot_n2 = Numeric.dot(n1,n2)
if debug: print "n1_dot_n2", Numeric.dot(n1,n2)
if abs(n1_dot_n2) >= 1*tolerance:
if debug: print "The rings are stacked vertically"
new_result = (acbs.getAtoms(lig_ring_bnds), acbs.getAtoms(macro_ring_bnds))
self.results['pi_pi'].append(new_result)
if abs(n1_dot_n2) <= 0.01*tolerance:
if debug: print "The rings are stacked perpendicularly"
new_result = (acbs.getAtoms(lig_ring_bnds), acbs.getAtoms(macro_ring_bnds))
self.results['t_shaped'].append(new_result)
def doit(self, ats):
""" Function to delete all the references to each atom of a
AtomSet."""
# Remove the atoms of the molecule you are deleting from the
# the AtomSet self.vf.allAtoms
self.vf.allAtoms = self.vf.allAtoms - ats
# If the current selection
atmsInSel = self.vf.selection.findType(Atom)[:]
atmsInSel.sort()
ats.sort()
# Call the updateGeoms function for all the command having an
# updateGeom function
molecules, atomSets = self.vf.getNodesByMolecule(ats)
done = 0
event = DeleteAtomsEvent(objects=ats)
self.vf.dispatchEvent(event)
allAtoms = AtomSet([])
for mol, atSet in map(None, molecules, atomSets):
if len(atSet)==len(mol.allAtoms):
#have to add atoms back to allAtoms for deleteMol to work
self.vf.allAtoms = self.vf.allAtoms + atSet
self.vf.deleteMol.deleteMol(mol)
#if this is the last atom, quit the loop
if mol==molecules[-1]:
done=1
break
continue
mol.allAtoms = mol.allAtoms - atSet
allAtoms = allAtoms + atSet
#FIRST remove any possible hbonds
hbondAts = atSet.get(lambda x: hasattr(x, 'hbonds'))
if hbondAts is not None:
#for each atom with hbonds
for at in hbondAts:
if not hasattr(at, 'hbonds'):
continue
#remove each of its hbonds
for b in at.hbonds:
self.removeHBond(b)
for at in atSet:
for b in at.bonds:
at2 = b.atom1
if at2 == at: at2 = b.atom2
at2.bonds.remove(b)
at.parent.remove(at, cleanup=1)
if len(atmsInSel):
if atmsInSel == ats:
# the current selection was deleted
self.vf.clearSelection(topCommand=0)
else:
nodes = self.vf.selection
lenSel = len(nodes)
setClass = nodes.__class__
elementClass = nodes.elementType
if lenSel>0:
# this breaks if selectionlevel is Molecule, for instance
# setClass = nodes.__class__
# newSel = setClass(nodes.findType(Atom) - ats)
# newSel2 = setClass([])
newSel = atmsInSel-ats
newSel2 = AtomSet([])
# may have ats which have been deleted everywhere else
for at in newSel:
if at in at.top.allAtoms:
newSel2.append(at)
if len(newSel2)!=lenSel:
self.vf.clearSelection(topCommand=0)
if len(newSel2):
newSel2 = newSel2.findType(elementClass).uniq()
self.vf.select(newSel2, topCommand=0)
#this fixed a bug which occurred when only 1 molecule present
#and cmd invoked with mv.deleteAtomSet(mv.Mols[0].allAtoms)
if not done:
for at in ats: del at
self.vf.resetUndo(topCommand=0)
def filterBasedOnAngs(self, pD, d2Ats, d3Ats, a2Ats, a3ats, paramDict):
badAtDict = {}
d2max = paramDict['d2max']
d2min = paramDict['d2min']
d3max = paramDict['d3max']
d3min = paramDict['d3min']
#NEED these parameters
a2max = paramDict['a2max']
a2min = paramDict['a2min']
a3max = paramDict['a3max']
a3min = paramDict['a3min']
#NB now pD keys could be hydrogens OR donors
for k in pD.keys():
if k.element=='H':
d = k.bonds[0].atom1
if id(d)==id(k): d = k.bonds[0].atom2
#d = k.bonds[0].neighborAtom(k)
h = k
else:
d = k
h = None
badAts = AtomSet([])
ct = 0
for ac in pD[k]:
if h is not None:
ang = getAngle(ac, h, d)
else:
acN = ac.bonds[0].atom1
if id(acN) == id(ac): acN = ac.bonds[0].atom2
#acN = ac.bonds[0].neighborAtom(ac)
ang = getAngle(d, ac, acN)
#print 'ang=', ang
dSp2 = d in d2Ats
aSp2 = ac in a2Ats
#these limits could be adjustable
if h is not None:
if dSp2:
upperLim = d2max
lowerLim = d2min
#upperLim = 170
#lowerLim = 130
else:
upperLim = d3max
lowerLim = d3min
#upperLim = 180
#lowerLim = 120
else:
#if there is no hydrogen use d-ac-acN angles
if dSp2:
upperLim = a2max
lowerLim = a2min
#upperLim = 150
#lowerLim = 110
else:
upperLim = a3max
lowerLim = a3min
#upperLim = 150
#lowerLim = 100
if ang>lowerLim and ang <upperLim:
#AT THIS MOMENT BUILD HYDROGEN BOND:
if dSp2:
if aSp2: typ = 22
else: typ = 23
elif aSp2: typ = 32
else: typ = 33
#THEY could be already bonded
alreadyBonded = 0
if hasattr(d, 'hbonds') and hasattr(ac,'hbonds'):
for hb in d.hbonds:
if hb.donAt==ac or hb.accAt==ac:
alreadyBonded = 1
if not alreadyBonded:
newHB = HydrogenBond(d, ac, h, theta=ang, typ=typ)
if not hasattr(ac, 'hbonds'):
ac.hbonds=[]
if not hasattr(d, 'hbonds'):
d.hbonds=[]
ac.hbonds.append(newHB)
d.hbonds.append(newHB)
if h is not None:
#hydrogens can have only 1 hbond
h.hbonds = [newHB]
# newHB.hlen = dist
#else:
# newHB.dlen = dist
else:
badAts.append(ac)
ct = ct + 1
badAtDict[k] = badAts
return badAtDict