def __init__(self, original_pdb, pqr_file, metals):
self.ori_pdb = Read(original_pdb)[0]
self.pqr = Read(pqr_file)[0]
self.metals = metals
self.new_pdb = pqr_file.split('.')[0] + '.pdb'
uniq_list = {} # to avoid redundancy
if self.metals:
for met in self.metals:
ele = met[1][:3].strip().lower()
if ele not in uniq_list.keys():
uniq_list[ele] = met[2]
else:
continue
met_atoms = self.ori_pdb.allAtoms.get(lambda x: x.element.lower() in uniq_list)
for atm in met_atoms:
atm.charge = uniq_list[atm.element.lower()]
print 'atoms charge', atm.element, uniq_list[atm.element.lower()]
for met_atm in met_atoms:
close_atoms = self.pqr.closerThan(met_atm.coords, self.pqr.allAtoms, 2.8)
for a in close_atoms:
if a.element == 'H':
for b in a.bonds:
at2 = b.atom1
if at2 == a: at2 = b.atom2
at2.bonds.remove(b)
a.bonds.remove(b)
a.parent.remove(a)
del a
self.pqr.allAtoms = self.pqr.chains.residues.atoms
self.pqr.allAtoms = self.pqr.chains.residues.atoms + met_atoms
writer = PdbWriter()
writer.write(self.new_pdb, self.pqr.allAtoms, records=['ATOM', 'HETATM'])
def set_ligand(self, ligand_filename, center_on_ligand=False):
self.ligand = Read(ligand_filename)[0]
if self.ligand == None:
print 'ERROR reading: ', ligand_filename
return
if self.verbose:
print "read ", self.ligand.name
ligand_types = self.getTypes(self.ligand)
self.gpo.set_ligand4(ligand_filename, types=ligand_types)
#this sets ligand_types, gpo.ligand_stem and gpo.ligand_filename
if self.verbose:
print "set gpo.ligand_stem to", self.gpo.ligand_stem
print "set gpo.ligand_filename to", self.gpo.ligand_filename
print "set gpo.ligand_types to", self.gpo['ligand_types'][
'value'].__class__
#need to get npts
if self.size_box_to_include_ligand:
self.getSideLengths(self.ligand) #sets ligand.center
#gridcenter IS NOT SET BY THIS!!!
if center_on_ligand:
cen = self.ligand.getCenter()
self.gpo['gridcenter']['value'] = [round(cen[0],4), round(cen[1],4),\
round(cen[2],4)]
self.gpo['gridcenterAuto']['value'] = 0
if self.verbose:
print "set gridcenter to ", self.gpo['gridcenter']['value']
#only make the box bigger, do NOT make it smaller
for ix, val in enumerate(self.gpo['npts']['value']):
#npts
if hasattr(self.ligand, 'npts'):
npts = self.ligand.npts
if npts[ix] > val:
self.gpo['npts']['value'][ix] = npts[ix]
if self.verbose: print "set npts to ", self.gpo['npts']['value']
def test_simplestride():
if haveStride:
from MolKit import Read
mol = Read("./Data/1crn.pdb")[0]
mol.secondaryStructureFromStride()
assert hasattr(mol.chains[0], 'secondarystructureset') and \
len(mol.chains[0].secondarystructureset)==11
def test_getsecondarystructureChain():
if haveStride:
from MolKit import Read
mol = Read("./Data/fxnohtatm.pdb")[0]
from MolKit.getsecondarystructure import GetSecondaryStructureFromStride
ssb = GetSecondaryStructureFromStride(mol)
mol.secondaryStructure(ssb)
def test_getsecondarystructureChain():
if haveStride:
from MolKit import Read
mol = Read("./Data/fxnohtatm.pdb")[0]
from MolKit.getsecondarystructure import GetSecondaryStructureFromStride
ssb = GetSecondaryStructureFromStride(mol)
mol.secondaryStructure(ssb)
def test_Write_6(self):
if not haveStride: return
from MolKit import Read
self.mol = Read("Data/1crn.pdb")[0]
self.mol.secondaryStructureFromStride()
from MolKit.pdbWriter import PdbWriter
writer = PdbWriter()
writer.write('Data/1crn_writer.pdb', self.mol,
records=['ATOM', 'HETATM', 'CONECT',
'TURN','HELIX', 'SHEET'],
bondOrigin='all', ssOrigin='Stride')
# Make sure that the ss information has been written out
# properly.
nmol = Read("Data/1crn_writer.pdb")[0]
nmol.secondaryStructureFromFile()
nsset = nmol.chains[0].secondarystructureset
osset = self.mol.chains[0].secondarystructureset
self.assertEqual(len(nsset), len(osset))
for nss, oss in map(None, nsset, osset):
self.assertEqual(nss.name, oss.name)
self.assertEqual(nss.start.name,oss.start.name)
self.assertEqual(nss.end.name, oss.end.name)
self.assertEqual(len(nss.residues), len(oss.residues))
os.system("rm Data/1crn_writer.pdb")
def set_types_from_directory(self, directory):
if self.verbose:
print "reading directory ", directory
filelist = glob.glob(directory + "/*.pdb*")
if self.verbose:
print "len(filelist)=", len(filelist)
ad4_typer = AutoDock4_AtomTyper()
type_dict = {}
for f in filelist:
m = Read(f)[0]
m.buildBondsByDistance()
ad4_typer.setAutoDockElements(m)
for a in m.allAtoms:
type_dict[a.autodock_element] = 1
self.getSideLengths(m) #sets ligand.center
npts = m.npts
#only make the box bigger, do NOT make it smaller
for ix, val in enumerate(self.gpo['npts']['value']):
if npts[ix]>val:
self.gpo['npts']['value'][ix] = npts[ix]
if self.verbose:
print m.name, " increased grid dimension ", ix, " to ", npts[ix]
d_types = type_dict.keys()
if self.verbose:
print "found ", d_types, " atom types in directory ", directory
self.gpo['ligand_types']['value'] = string.join(d_types)
if self.verbose:
print "now ligand_types is ", self.gpo['ligand_types']['value']
def test_simplestride():
if haveStride:
from MolKit import Read
mol = Read("./Data/1crn.pdb")[0]
mol.secondaryStructureFromStride()
assert hasattr(mol.chains[0], 'secondarystructureset') and \
len(mol.chains[0].secondarystructureset)==11
def __init__(self, original_pdb, pqr_file, metal):
self.ori_pdb = Read(original_pdb)[0]
self.pqr = Read(pqr_file)[0]
self.metal = metal
self.new_pdb = pqr_file.split('.')[0] + '.pdb'
if self.metal:
zn = self.ori_pdb.allAtoms.get(lambda x: x.element == 'Zn')
# remove hydrogens added to HYS residues near ZN atoms
close_atoms = self.pqr.closerThan(zn[0].coords, self.pqr.allAtoms,
2.3)
# FIXME: only take the first atoms in list
for a in close_atoms:
if a.element == 'H':
# print a.name
for b in a.bonds:
at2 = b.atom1
if at2 == a: at2 = b.atom2
at2.bonds.remove(b)
a.bonds.remove(b)
a.parent.remove(a)
del a
self.pqr.allAtoms = self.pqr.chains.residues.atoms + zn
writer = PdbWriter()
writer.write(self.new_pdb,
self.pqr.allAtoms,
records=['ATOM', 'HETATM'])
def set_types_from_directory(self, directory):
if self.verbose:
print "reading directory ", directory
filelist = glob.glob(directory + "/*.pdb*")
if self.verbose:
print "len(filelist)=", len(filelist)
ad4_typer = AutoDock4_AtomTyper()
type_dict = {}
for f in filelist:
m = Read(f)[0]
m.buildBondsByDistance()
ad4_typer.setAutoDockElements(m)
for a in m.allAtoms:
type_dict[a.autodock_element] = 1
self.getSideLengths(m) #sets ligand.center
npts = m.npts
#only make the box bigger, do NOT make it smaller
for ix, val in enumerate(self.gpo['npts']['value']):
if npts[ix] > val:
self.gpo['npts']['value'][ix] = npts[ix]
if self.verbose:
print m.name, " increased grid dimension ", ix, " to ", npts[
ix]
d_types = type_dict.keys()
if self.verbose:
print "found ", d_types, " atom types in directory ", directory
self.gpo['ligand_types']['value'] = string.join(d_types)
if self.verbose:
print "now ligand_types is ", self.gpo['ligand_types']['value']
def setUp(self):
self.mols1 = Read('Data/stringSel.pdb')
self.mol1 = self.mols1[0]
self.mols2 = Read('Data/protease.pdb')
self.mol2 = self.mols2[0]
self.mols = self.mols1 + self.mols2
self.stringSel = StringSelector()
def test_buildBondsByDistance_1():
"""
Test the buildBondsByDistance for 1crn.pdb with one chain
"""
from MolKit import Read
mol = Read('Data/1crn.pdb')[0]
mol.buildBondsByDistance()
bonds, nobonds = mol.allAtoms.bonds[0], mol.allAtoms.bonds[1]
assert len(bonds) == 337 and len(nobonds) == 0
def initMolecules(self):
global molecules, molecules2
from MolKit import Read
if molecules is None:
molecules = Read('Data/stringSel.pdb')
if molecules2 is None:
molecules2 = Read('Data/protease.pdb')
self.mols1 = molecules
self.mols2 = molecules2
self.mols = molecules + molecules2
def test_parseTERRecord():
from MolKit import Read
# Protein with TER records specifying chain A and ChainB
print "Testing 1bsr: protein with normal TER records"
mol = Read("./Data/1bsr.pdb")[0]
assert len(mol.chains) == 2
assert mol.chains.name == ['A', 'B']
print mol.chains.name
# Protein with TER records specifying, 1- several chains and 2-
# Gaps in chain E.
# If chain ID is the same on each side of a TER records
# this doesn't create a new chain but a gap information.
# print "Testing 1ACB.pdb: protein with TER specifying GAPS in chain E"
# mol = Read("./Data/1ACB.pdb")[0]
# assert len(mol.chains)==3, "Expecting 3 chains got %s"%len(mol.chains)
# assert mol.chains.gaps == [[('LEU13', 'ILE16'),('TYR146', 'ALA149')], [], []],"Expecting two gaps ('LEU13', 'ILE16'), ('TYR146', 'ALA149') in first chain and got %s"%mol.chains.gaps
# print mol.chains.name
# print mol.chains.gaps
# Protein with incorrect TER record...Only TER record no information
# on the chain ID.
# TER record doesn't have the right information
print "Testing ind.pdb: protein with INCORRECT TER record"
mol = Read("./Data/ind.pdb")[0]
assert len(mol.chains) == 1, "Expecting 1 chain I got %s %s" % (len(
mol.chains), mol.chains.name)
print mol.chains.name
# Protein with No TER records at all and 1 chain
print "Testing 1crn_Hs.pdbq: protein with no TER Record and 1 chain"
mol = Read("Data/1crn_Hs.pdbq")[0]
assert len(mol.chains) == 1, "Expecting 1 chain got %s" % len(mol.chains)
assert mol.chains[
0].name == " ", "Expecting chain name ' ', got %s" % mol.chains[0].name
print mol.chains.name
# Protein with 1 TER records and 2 chains A and B
print "Testing 1crn2Chains.pdb: protein with only 1 TER record and 2 chains"
mol = Read("Data/1crn2Chains.pdb")[0]
assert len(mol.chains) == 2, "Expecting 1 chain got %s" % len(mol.chains)
assert mol.chains.name == [
'A', 'B'
], "Expecting chain name ' ', got %s" % mol.chains.name
print mol.chains.name
# Protein with No TER records at all and 2 chains
print "Testing 1crn2Chains.pdb: protein with only 1 TER record at the end of the ATOM"
mol = Read("Data/1crn2ChainsNOTER.pdb")[0]
assert len(mol.chains) == 2, "Expecting 1 chain got %s" % len(mol.chains)
assert mol.chains.name == [
'A', 'B'
], "Expecting chain name ' ', got %s" % mol.chains.name
print mol.chains.name
def test_merge():
# merge mol2 into mol1.
from MolKit import Read
mol1 = Read("./Data/protease.pdb")[0]
mol2 = Read("./Data/indinavir.pdb")[0]
from MolKit.protein import ProteinSet
pset = ProteinSet([mol1, mol2])
chains = pset.chains[:]
mol1.merge(mol2)
mol1.chains.sort()
chains.sort()
assert mol1.chains == chains
def test_merge():
# merge mol2 into mol1.
from MolKit import Read
mol1 = Read("./Data/protease.pdb")[0]
mol2 = Read("./Data/indinavir.pdb")[0]
from MolKit.protein import ProteinSet
pset = ProteinSet([mol1,mol2])
chains = pset.chains[:]
mol1.merge(mol2)
mol1.chains.sort()
chains.sort()
assert mol1.chains == chains
def autodock_scoring(receptor, ligand):
receptorfilename = receptor
ligandfilename = ligand
write_file_mode = False
parameter_library_filename = None
exclude_torsFreeEnergy = False
verbose = None
ad_scorer = AutoDock41Scorer(exclude_torsFreeEnergy=exclude_torsFreeEnergy)
supported_types = ad_scorer.supported_types
receptor = Read(receptorfilename)[0]
receptor.buildBondsByDistance()
ligand = Read(ligandfilename)[0]
ligand.buildBondsByDistance()
ms = MolecularSystem()
ms.add_entities(receptor.allAtoms)
ms.add_entities(ligand.allAtoms)
ad_scorer.set_molecular_system(ms)
#get the scores, score per term:
[estat, hb, vdw, dsolv] = ad_scorer.get_score_per_term()
torsEnrg = ligand.TORSDOF * ad_scorer.tors_weight
score = estat + hb + vdw + dsolv + torsEnrg
output_score = {
'score': score,
'estat': estat,
'hb': hb,
'vdw': vdw,
'dsolv,': dsolv,
'torsEnrg': torsEnrg
}
return output_score
def get_best_energy_info(d, rms_tolerance, build_hydrogen_bonds=False, \
report_energy_breakdown=False,
report_unbound_energy=False,
receptor_filename=None, refCoords=None,
subtract_internal_energy=False):
global be
ostr = ""
clust0 = d.clusterer.clustering_dict[rms_tolerance][0]
c = clust0[0]
#find the filename of the best result
dlo_filename = get_filename(d, c)
if verbose: print("set dlo_filename to ", dlo_filename)
ostr = dlo_filename + ", "
be = c.binding_energy
if subtract_internal_energy:
be = c.binding_energy - c.total_internal
if refCoords:
ostr += "%3d,%3d,%3d,% 8.4f,% 8.4f," % (len(
d.clusterer.data), num_clusters, len(clust0), be,
c.getRMSD(refCoords=refCoords))
#ostr += "%3d,%3d,%3d,% 8.4f,% 8.4f," %(len(d.clusterer.data), num_clusters, len(clust0), c.binding_energy, c.getRMSD(refCoords=refCoords))
else:
ostr += "%3d,%3d,%3d,% 8.4f,% 8.4f," % (len(
d.clusterer.data), num_clusters, len(clust0), be, c.getRMSD())
#ostr += "%3d,%3d,%3d,% 8.4f,% 8.4f," %(len(d.clusterer.data), num_clusters, len(clust0), c.binding_energy, c.getRMSD())
d.ch.set_conformation(c)
receptor = None
if build_hydrogen_bonds:
if not receptor_filename:
print(
"receptor_filename must be specified in order to build_hydrogen_bonds"
)
return
receptor = Read(receptor_filename)[0]
receptor.buildBondsByDistance()
d.ligMol.buildBondsByDistance()
ostr += construct_hydrogen_bonds(receptor.allAtoms,
d.ligMol.allAtoms,
verbose=verbose)
if report_energy_breakdown:
if not receptor_filename:
print(
"receptor_filename must be specified in order to build_hydrogen_bonds"
)
if not receptor:
receptor = Read(receptor_filename)[0]
receptor.buildBondsByDistance()
#build bonds if necessary
d.ligMol.buildBondsByDistance()
#ostr += get_energy_breakdown(receptor.allAtoms, d.ligMol.allAtoms, c)
ostr += get_energy_breakdown(receptor.allAtoms, d.ligMol.allAtoms,
c.getCoords()[:])
if report_unbound_energy:
if c.unbound_energy is not None:
ostr += ",% 8.4f" % c.unbound_energy
else:
if verbose: print("conformation's unbound energy is None!")
ostr += ", 0.0"
return ostr
def set_ligand(self, ligand_filename):
self.ligand_filename = os.path.basename(ligand_filename)
if verbose:
print "set ligand_filename to", self.ligand_filename
self.dpo.set_ligand(ligand_filename)
#expect a filename like ind.out.pdbq: get 'ind' from it
self.ligand_stem = string.split(self.ligand_filename, '.')[0]
if verbose: print "set ligand_stem to", self.ligand_stem
self.ligand = Read(ligand_filename)[0]
if self.ligand == None:
print 'ERROR reading: ', ligand_filename
return
if verbose:
print "read ", self.ligand.name
#set dpo:
#move
self.dpo['move']['value'] = self.ligand_filename
if verbose: print "set move to ", self.dpo['move']['value']
#ndihe
#assumes ligand has torTree
self.dpo['ndihe']['value'] = self.ligand.parser.keys.count("BRANCH")
#self.dpo['ndihe']['value'] = len(self.ligand.torTree.torsionMap)
if verbose: print "set ndihe to ", self.dpo['ndihe']['value']
#torsdof
#caution dpo['torsdof']['value'] is a list [ndihe, 0.3113]
self.dpo['torsdof']['value'][0] = self.ligand.TORSDOF
if verbose: print "set torsdof to ", self.dpo['torsdof']['value']
#types
d = {}
for a in self.ligand.allAtoms:
d[a.autodock_element] = 1
sortKeyList = [
'C', 'A', 'N', 'O', 'S', 'H', 'P', 'n', 'f', 'F', 'c', 'b', 'I',
'M'
]
lig_types = ""
for t in sortKeyList:
if t in d.keys():
lig_types = lig_types + t
self.ligand.types = lig_types
self.dpo['types']['value'] = self.ligand.types
if verbose: print "set types to ", self.dpo['types']['value']
#about
self.ligand.getCenter()
cen = self.ligand.center
self.dpo['about']['value'] = [round(cen[0],4), round(cen[1],4),\
round(cen[2],4)]
if verbose: print "set about to ", self.dpo['about']['value']
def test_findType():
from MolKit import Read
mol = Read("./Data/1crn.pdb")[0]
from MolKit.protein import Residue, Chain, Protein, ResidueSet
from MolKit.molecule import Atom, AtomSet
# FindType below from top of the tree
res = mol.findType(Residue)
res.sort()
molres = mol.chains.residues
molres.sort()
assert res == molres
# FindType above from bottom of the tree
atms = mol.allAtoms
chains = atms.findType(Chain)
# Automatically does a uniq when going above
assert len(chains) == 327
# FindType above uniq from bottom of the tree
chainsuniq = atms.findType(Chain, uniq=1)
assert len(chainsuniq) == 1
# FindType above from middle of the tree
prot = res.findType(Protein, uniq=1)
assert len(prot) == 1 and prot == mol.setClass([mol])
# FindType below from middle of the tree
atoms = chainsuniq.findType(Atom)
assert len(atoms) == 327
# FindType on empty set
emptyres = ResidueSet([])
atoms = emptyres.findType(Atom)
assert len(atoms) == 0 and isinstance(atoms, AtomSet)
# FindType on same type
atoms = atms.findType(Atom)
assert atoms == atms
# Raise exception
from MolKit.protein import Helix
try:
nodes = atms.findType(Helix)
except RuntimeError:
print "passed"
def set_ligand(self, ligand_filename, center_on_ligand=False):
self.ligand = Read(ligand_filename)[0]
if self.ligand==None:
print 'ERROR reading: ', ligand_filename
return
if self.verbose:
print "read ", self.ligand.name
ligand_types = self.getTypes(self.ligand)
self.gpo.set_ligand4(ligand_filename, types=ligand_types)
#this sets ligand_types, gpo.ligand_stem and gpo.ligand_filename
if self.verbose:
print "set gpo.ligand_stem to", self.gpo.ligand_stem
print "set gpo.ligand_filename to", self.gpo.ligand_filename
print "set gpo.ligand_types to", self.gpo['ligand_types']['value'].__class__
#need to get npts
if self.size_box_to_include_ligand:
self.getSideLengths(self.ligand) #sets ligand.center
#gridcenter IS NOT SET BY THIS!!!
if center_on_ligand:
cen = self.ligand.getCenter()
self.gpo['gridcenter']['value'] = [round(cen[0],4), round(cen[1],4),\
round(cen[2],4)]
self.gpo['gridcenterAuto']['value'] = 0
if self.verbose: print "set gridcenter to ", self.gpo['gridcenter']['value']
#only make the box bigger, do NOT make it smaller
for ix, val in enumerate(self.gpo['npts']['value']):
#npts
if hasattr(self.ligand, 'npts'):
npts = self.ligand.npts
if npts[ix]>val:
self.gpo['npts']['value'][ix] = npts[ix]
if self.verbose: print "set npts to ", self.gpo['npts']['value']
def __init__(self, pdb):
# if not is valid
self.exception = None
try:
self.mol = Read(pdb)[0]
except Exception as inst:
self.exception = inst # the exception instance
self.het = []
self.zn_atoms = []
self.size = None
self.center = None
self.selection_center = None
self.prot = []
if not self.exception:
self.get_info()
self.center = self.mol.getCenter()
def __init__(self, filename):
self.input_file = Read(filename)[0]
self.output = filename.split('.')[0] + '.pdb'
writer = PdbWriter()
writer.write(self.output,
self.input_file.allAtoms,
records=['ATOM', 'HETATM'])
def test_Write_2(self):
"""
Test writing out CONECT records for the bonds described in
the pdb file and built by distance.
"""
from MolKit import Read
self.mol = Read("Data/1crn.pdb")[0]
self.mol.buildBondsByDistance()
# instanciate a PdbWriter and call the write method with the
# default arguments
from MolKit.pdbWriter import PdbWriter
writer = PdbWriter()
writer.write('Data/1crn_writer.pdb', self.mol)
from MolKit.pdbParser import PdbParser
nmol = Read("Data/1crn_writer.pdb")[0]
os.system("rm Data/1crn_writer.pdb")
def set_types_from_directory(self, directory):
if self.verbose:
print("reading directory ", directory)
filelist = glob.glob(directory + "/*.pdb*")
if self.verbose:
print("len(filelist)=", len(filelist))
ad4_typer = AutoDock4_AtomTyper()
type_dict = {}
all_types = ""
for f in filelist:
ftype = os.path.splitext(f)[-1]
if ftype != ".pdbqt":
print("skipping ", f, " not in PDBQT format!")
continue
m = Read(f)[0]
m_types = ""
m_types = " ".join(list(set(m.allAtoms.autodock_element)))
self.getSideLengths(m) # sets ligand.center
npts = m.npts
# only make the box bigger, do NOT make it smaller
for ix, val in enumerate(self.gpo['npts']['value']):
if npts[ix] > val:
self.gpo['npts']['value'][ix] = npts[ix]
if self.verbose:
print(m.name, " increased grid dimension ", ix, " to ", npts[ix])
all_types = all_types + m_types
if self.verbose:
print("added ", m_types, " atom types in directory ", directory)
print("end: all_types = ", all_types)
self.gpo['ligand_types']['value'] = all_types
if self.verbose:
print("all ligand_types for ", directory, "= ", self.gpo['ligand_types']['value'])
def ligand_preparation(ligand, output):
ligand_filename = None
verbose = None
add_bonds = False
repairs = ""
charges_to_add = 'gasteiger'
preserve_charge_types=''
cleanup = "nphs_lps"
allowed_bonds = "backbone"
root = 'auto'
outputfilename = output
check_for_fragments = False
bonds_to_inactivate = ""
inactivate_all_torsions = False
attach_nonbonded_fragments = False
attach_singletons = False
mode = 'automatic'
dict = None
mols = Read(ligand)
mol = mols[0]
mol.buildBondsByDistance()
LPO = AD4LigandPreparation(mol, mode, repairs, charges_to_add,
cleanup, allowed_bonds, root,
outputfilename=output,
dict=dict, check_for_fragments=check_for_fragments,
bonds_to_inactivate=bonds_to_inactivate,
inactivate_all_torsions=inactivate_all_torsions,
attach_nonbonded_fragments=attach_nonbonded_fragments,
attach_singletons=attach_singletons)
def __init__(self, receptor_file, percentCutoff=1., detect_pi=False, dist_cutoff=6, verbose=False,
distanceSelector=None, hydrogen_bond_builder=None, distanceSelectorWithCutoff=None,
aromatic_cycle_bond_selector=None):
self.receptor_file = receptor_file
receptor = Read(receptor_file)
assert(len(receptor)==1)
assert isinstance(receptor, MoleculeSet)
self.macro = receptor[0]
self.macro_atoms = self.macro.allAtoms
self.macro.buildBondsByDistance()
self.verbose = verbose
#??useful??
self.percentCutoff = percentCutoff
self.detect_pi = detect_pi
self.distanceSelector = distanceSelector
if self.distanceSelector is None:
self.distanceSelector = CloserThanVDWSelector(return_dist=0)
self.hydrogen_bond_builder = hydrogen_bond_builder
if self.hydrogen_bond_builder is None:
self.hydrogen_bond_builder = HydrogenBondBuilder()
self.distanceSelectorWithCutoff = distanceSelectorWithCutoff
if self.distanceSelectorWithCutoff is None:
self.distanceSelectorWithCutoff = DistanceSelector()
self.dist_cutoff=float(dist_cutoff)
self.results = d = {}
self.report_list =['lig_hb_atoms','lig_close_atoms']
self.aromatic_cycle_bond_selector = aromatic_cycle_bond_selector
if self.aromatic_cycle_bond_selector is None:
self.aromatic_cycle_bond_selector = AromaticCycleBondSelector()
if detect_pi:
self.report_list.extend(['pi_cation','pi_pi', 'cation_pi', 't_shaped'])
if self.verbose: print("self.report_list=", self.report_list)
def test_parseNMRModel():
from MolKit import Read
mols = Read("./Data/2EZNsmall.pdb")
assert len(mols) == 3, "Expecting 3 NMR models got %s" % len(mols)
assert mols.chains.id == [
' ', ' ', ' '
], "Expecting chain id ' ' got %s" % mols.chains.id
def get_largest_cluster_info(d, rms_tolerance, build_hydrogen_bonds=False, \
report_energy_breakdown=False,
report_unbound_energy=False,
receptor_filename=None, refCoords=None,
subtract_internal_energy=False):
global be_lc
largest = d.clusterer.clustering_dict[rms_tolerance][0]
if verbose: print "set largest to ", len(largest)
for clust in d.clusterer.clustering_dict[rms_tolerance]:
if verbose: print "current largest cluster len= ", len(clust)
if len(clust) > len(largest):
if verbose: print "resetting largest clust: now len=", len(clust)
largest = clust
c = largest[0] #print info about the lowest energy member of this cluster
ostr = " "
dlo_filename = get_filename(d, c)
ostr += dlo_filename + ","
be_lc = c.binding_energy
if subtract_internal_energy:
be_lc = c.binding_energy - c.total_internal
if refCoords:
ostr += "%3d,%3d,%3d,% 8.4f,% 8.4f," % (len(
d.clusterer.data), num_clusters, len(largest), be_lc,
c.getRMSD(refCoords=refCoords))
else:
ostr += "%3d,%3d,%3d,% 8.4f,% 8.4f," % (len(
d.clusterer.data), num_clusters, len(largest), be_lc, c.getRMSD())
if verbose: print "set dlo_filename to ", dlo_filename
#update the coords only if you need to?
d.ch.set_conformation(c)
receptor = None
if build_hydrogen_bonds:
if not receptor_filename:
print "receptor_filename must be specified in order to build_hydrogen_bonds"
return
receptor = Read(receptor_filename)[0]
receptor.buildBondsByDistance()
ostr += construct_hydrogen_bonds(receptor.allAtoms,
d.ligMol.allAtoms,
verbose=verbose)
if report_energy_breakdown:
if not receptor_filename:
print "receptor_filename must be specified in order to build_hydrogen_bonds"
return
if not receptor:
receptor = Read(receptor_filename)[0]
receptor.buildBondsByDistance()
#ostr += get_energy_breakdown(receptor.allAtoms, d.ligMol.allAtoms, c)
ostr += get_energy_breakdown(receptor.allAtoms, d.ligMol.allAtoms,
c.getCoords()[:])
if report_unbound_energy:
if c.unbound_energy is not None:
ostr += ",% 8.4f" % c.unbound_energy
else:
if verbose: print "conformation's unbound energy is None!"
ostr += ", 0.0"
return ostr
def test_findType():
from MolKit import Read
mol = Read("./Data/1crn.pdb")[0]
from MolKit.protein import Residue, Chain, Protein, ResidueSet
from MolKit.molecule import Atom, AtomSet
# FindType below from top of the tree
res = mol.findType(Residue)
res.sort()
molres = mol.chains.residues
molres.sort()
assert res == molres
# FindType above from bottom of the tree
atms = mol.allAtoms
chains = atms.findType(Chain)
# Automatically does a uniq when going above
assert len(chains) == 327
# FindType above uniq from bottom of the tree
chainsuniq = atms.findType(Chain, uniq=1)
assert len(chainsuniq) == 1
# FindType above from middle of the tree
prot = res.findType(Protein, uniq=1)
assert len(prot) == 1 and prot == mol.setClass([
mol,
])
# FindType below from middle of the tree
atoms = chainsuniq.findType(Atom)
assert len(atoms) == 327
# FindType on empty set
emptyres = ResidueSet([])
atoms = emptyres.findType(Atom)
assert len(atoms) == 0 and isinstance(atoms, AtomSet)
# FindType on same type
atoms = atms.findType(Atom)
assert atoms == atms
# Raise exception
from MolKit.protein import Helix
try:
nodes = atms.findType(Helix)
except RuntimeError:
print "passed"
def test_3level_select_end_2(self):
"""
test select with ':$' returns molecule's last atom
"""
new_mols = Read("Data/1crn.pdb")
self.mols +=new_mols
result, msg = self.stringSel.select(self.mols, ":::$")
self.assertEquals(result[0], self.mols[-1:].allAtoms[-1])
class BaseTests(unittest.TestCase):
def setUp(self):
from MolKit import Read
self.mol = Read('Data/1crn.pdb')[0]
self.mol.buildBondsByDistance()
def tearDown(self):
"""
clean-up
"""
del(self.mol)
def test_constructor(self):
"""
instantiate an HydrogenBuilder
"""
h_builder = HydrogenBuilder()
self.assertEquals(h_builder.__class__, HydrogenBuilder)
def test_constructorOptions(self):
"""
test possible constructor options
options = htype, renumber, method
"""
h_builder = HydrogenBuilder(htype='polarOnly')
self.assertEquals(h_builder.__class__, HydrogenBuilder)
h_builder = HydrogenBuilder(renumber=0)
self.assertEquals(h_builder.__class__, HydrogenBuilder)
h_builder = HydrogenBuilder(method='withBondOrder')
self.assertEquals(h_builder.__class__, HydrogenBuilder)
def test_addHydrogens(self):
"""
test addHydrogens
"""
beforeLen = len(self.mol.allAtoms)
h_builder = HydrogenBuilder()
h_builder.addHydrogens(self.mol)
afterLen = len(self.mol.allAtoms)
#print "beforeLen=", beforeLen, ' afterLen=', afterLen
self.assertEquals(beforeLen<afterLen, True)
def test_3level_select_end(self):
"""
test select with '$' returns last molecule.atoms
"""
new_mols = Read("Data/1crn.pdb")
self.mols +=new_mols
result, msg = self.stringSel.select(self.mols, "$:::")
self.assertEquals(result, self.mols[-1:].allAtoms)
def set_ligand(self, ligand_filename):
self.ligand_filename = os.path.basename(ligand_filename)
if self.verbose:
print "set ligand_filename to", self.ligand_filename
self.gpo.set_ligand(ligand_filename)
#expect a filename like ind.out.pdbq: get 'ind' from it
self.ligand_stem = string.split(self.ligand_filename, '.')[0]
if self.verbose: print "set ligand_stem to", self.ligand_stem
self.ligand = Read(ligand_filename)[0]
#IS THIS USEFUL???
self.gpo.ligand = self.ligand
if self.verbose: print "read ", self.ligand.name
#set gpo:
#types
d = {}
for a in self.ligand.allAtoms:
d[a.autodock_element] = 1
sortKeyList = [
'C', 'A', 'N', 'O', 'S', 'H', 'P', 'n', 'f', 'F', 'c', 'b', 'I',
'M'
]
lig_types = ""
for t in sortKeyList:
if t in d.keys():
lig_types = lig_types + t
self.ligand.types = lig_types
self.gpo['types']['value'] = self.ligand.types
if self.verbose: print "set types to ", self.gpo['types']['value']
#gridcenter
self.ligand.center = self.ligand.getCenter()
if self.size_box_to_include_ligand:
self.getSideLengths(self.ligand) #sets ligand.center
cen = self.ligand.center
self.gpo['gridcenter']['value'] = [round(cen[0],4), round(cen[1],4),\
round(cen[2],4)]
self.gpo['gridcenterAuto']['value'] = 0
if self.verbose:
print "set gridcenter to ", self.gpo['gridcenter']['value']
#only make the box bigger from npts, do not make it smaller
for ix, val in enumerate(self.gpo['npts']['value']):
if hasattr(self.ligand, 'npts'):
npts = self.ligand.npts
if npts[ix] > val:
if self.verbose:
print "increasing ", ix, " grid dimension to ", val
self.gpo['npts']['value'][ix] = npts[ix]
def test_select_end(self):
"""
test select with '$' returns last item
"""
new_mols = Read("Data/1crn.pdb")
self.mols +=new_mols
result, msg = self.stringSel.select(self.mols, "$")
self.assertEquals(result[-1], self.mols[-1])
def test_Write_1(self):
"""
Test the default option of the write method of a PdbWriter.
Just write the ATOM, HETATM and CONECT records and bondOrigin
is File.
"""
# read a molecule
from MolKit import Read
self.mol = Read("Data/1crn.pdb")[0]
# instanciate a PdbWriter and call the write method with the
# default arguments
from MolKit.pdbWriter import PdbWriter
writer = PdbWriter()
writer.write('Data/1crn_writer.pdb', self.mol)
# This should write only the ATOM and CONECT records
# The TER records are automatically created with the ATOM records
# 1- Make sure that the file has been created
import os
self.failUnless(os.path.exists('Data/1crn_writer.pdb'))
# 2- Make sure that the file created the proper records
# Get the default records from the new pdb files
from MolKit.pdbParser import PdbParser
nmol = Read("Data/1crn_writer.pdb")[0]
# COMPARE
ncoords = nmol.allAtoms.coords
ocoords = self.mol.allAtoms.coords
self.assertEqual(ncoords, ocoords)
nname = nmol.allAtoms.name
oname = nmol.allAtoms.name
self.assertEqual(nname, oname)
nbonds = nmol.allAtoms.bonds[0]
obonds = self.mol.allAtoms.bonds[0]
self.assertEqual(len(nbonds), len(obonds))
nbatms = nbonds.atom1+nbonds.atom2
nbatms = nbatms.uniq()
nbatms.sort()
nbatms = nbonds.atom1+nbonds.atom2
nbatms = nbatms.uniq()
nbatms.sort()
os.system("rm Data/1crn_writer.pdb")
def setUpSuite():
from mslib import msms
print(("msms imported from: ", msms.__file__))
newmol = Read("./Data/1crn.pdb")
allatoms = newmol.chains.residues.atoms
global coords
coords = allatoms.coords
global rad
rad = newmol[0].defaultRadii(united=1)
class BaseTests(unittest.TestCase):
def setUp(self):
from MolKit import Read
self.mol = Read("Data/2plv_no_oxt.pdb")[0]
self.mol.buildBondsByDistance()
def tearDown(self):
"""
clean-up
"""
del (self.mol)
def test_constructor(self):
"""
instantiate an HydrogenBuilder
"""
oxt_builder = OxtBuilder()
self.assertEquals(oxt_builder.__class__, OxtBuilder)
# def test_constructorOptions(self):
# """
# test possible constructor options
# options = NONE!!
# """
#
# oxt_builder = OxtBuilder(???=???)
# self.assertEquals(oxt_builder.__class__, OxtBuilder)
def test_add_oxt(self):
"""
test add_oxt
"""
beforeLen = len(self.mol.allAtoms)
oxt_builder = OxtBuilder()
# the last chain is all waters so skip it
for ch in self.mol.chains[:-1]:
catom = ch.residues[-1].atoms[2]
new_at = oxt_builder.add_oxt(catom)
# print "added ", new_at.full_name()
afterLen = len(self.mol.allAtoms)
# print "beforeLen=", beforeLen, ' afterLen=', afterLen
self.assertEquals(beforeLen + len(self.mol.chains[:-1]), afterLen)
def set_ligand4(self, ligand_filename, types=None):
#this should set ligand_types
#print "in set_ligand4: types=", types
if types is None:
ligand = Read(ligand_filename)[0]
ligand.buildBondsByDistance()
ad4_typer = AutoDock4_AtomTyper()
ad4_typer.setAutoDockElements(ligand)
dict = {}
for a in ligand.allAtoms:
dict[a.autodock_element] = 1
d_types = dict.keys()
d_types.sort()
types = d_types[0]
for t in d_types[1:]:
types = types + " " + t
self['ligand_types']['value'] = types
#print "set_ligand4: self['ligand_types']['value']=", self['ligand_types']['value']
self.ligand_filename = os.path.basename(ligand_filename)
#print "GPO: set ligand_filename to ", self.ligand_filename
self.ligand_stem = os.path.splitext(self.ligand_filename)[0]
class PdbqtWriterAtomLinesTest(PdbWriterTest):
def setUp(self):
from MolKit import Read
self.mol = Read('Data/hsg1.pdbqt')[0]
self.mol.buildBondsByDistance()
def tearDown(self):
del(self.mol)
def test_write(self):
"""
test writing a pdbqs file
"""
writer = PdbqtWriter()
writer.write('test_pdbqtWriter.pdbqt', self.mol, bondOrigin=('File',))
ans, errors = self.compare('Data/hsg1.pdbqt', 'test_pdbqtWriter.pdbqt')
self.assertEquals(errors, None)
self.assertEquals(ans, True)
def get_best_energy_info(d, rms_tolerance, build_hydrogen_bonds=False, \
report_energy_breakdown=False,
report_unbound_energy=False,
receptor_filename=None):
ostr = ""
clust0 = d.clusterer.clustering_dict[rms_tolerance][0]
c = clust0[0]
#find the filename of the best result
dlo_filename = get_filename(d, c)
if verbose: print "set dlo_filename to ", dlo_filename
ostr = dlo_filename + ", "
ostr += "%3d,%3d,%3d,% 8.4f,% 8.4f," %(len(d.clusterer.data), num_clusters, len(clust0), c.binding_energy, c.getRMSD())
d.ch.set_conformation(c)
receptor = None
if build_hydrogen_bonds:
if not receptor_filename:
print "receptor_filename must be specified in order to build_hydrogen_bonds"
return
receptor = Read(receptor_filename)[0]
receptor.buildBondsByDistance()
ostr += construct_hydrogen_bonds(receptor.allAtoms, d.ligMol.allAtoms)
if report_energy_breakdown:
if not receptor_filename:
print "receptor_filename must be specified in order to build_hydrogen_bonds"
if not receptor:
receptor = Read(receptor_filename)[0]
receptor.buildBondsByDistance()
ostr += get_energy_breakdown(receptor.allAtoms, d.ligMol.allAtoms, c)
if report_unbound_energy:
if c.unbound_energy is not None:
ostr += "% 8.4f," %c.unbound_energy
else:
if verbose: print "conformation's unbound energy is None!"
ostr += "% 0.0,"
return ostr
def autodock_scoring(receptor, ligand):
receptorfilename = receptor
ligandfilename = ligand
write_file_mode = False
parameter_library_filename = None
exclude_torsFreeEnergy = False
verbose = None
ad_scorer = AutoDock41Scorer(exclude_torsFreeEnergy=exclude_torsFreeEnergy)
supported_types = ad_scorer.supported_types
receptor = Read(receptorfilename)[0]
receptor.buildBondsByDistance()
ligand = Read(ligandfilename)[0]
ligand.buildBondsByDistance()
ms = MolecularSystem()
ms.add_entities(receptor.allAtoms)
ms.add_entities(ligand.allAtoms)
ad_scorer.set_molecular_system(ms)
#get the scores, score per term:
[estat, hb, vdw ,dsolv] = ad_scorer.get_score_per_term()
torsEnrg = ligand.TORSDOF * ad_scorer.tors_weight
score = estat +hb +vdw +dsolv +torsEnrg
output_score = {'score':score, 'estat':estat, 'hb':hb, 'vdw':vdw, 'dsolv,':dsolv, 'torsEnrg':torsEnrg}
return output_score
def set_receptor4(self, receptor_filename, types=None):
#this should set receptor_types
if types is None:
receptor = Read(receptor_filename)[0]
receptor.buildBondsByDistance()
ad4_typer = AutoDock4_AtomTyper()
ad4_typer.setAutoDockElements(receptor)
dict = {}
for a in receptor.allAtoms:
dict[a.autodock_element] = 1
d_types = dict.keys()
d_types.sort()
types = d_types[0]
for t in d_types[1:]:
types = types + " " + t
self['receptor_types']['value'] = types
basename = os.path.basename(receptor_filename)
self.receptor_filename = basename
self.receptor_stem = os.path.splitext(basename)[0]
if receptor_filename!='':
self['receptor']['value'] = basename
self['gridfld']['value'] = self.receptor_stem + '.maps.fld'
self['elecmap']['value'] = self.receptor_stem + '.e.map'
self['dsolvmap']['value'] = self.receptor_stem + '.d.map'
def set_ligand(self, ligand_filename):
self.ligand_filename = os.path.basename(ligand_filename)
if verbose:
print "set ligand_filename to", self.ligand_filename
self.dpo.set_ligand(ligand_filename)
#expect a filename like ind.out.pdbq: get 'ind' from it
self.ligand_stem = string.split(self.ligand_filename,'.')[0]
if verbose: print "set ligand_stem to", self.ligand_stem
self.ligand = Read(ligand_filename)[0]
if self.ligand==None:
print 'ERROR reading: ', ligand_filename
return
if verbose:
print "read ", self.ligand.name
#set dpo:
#move
self.dpo['move']['value'] = self.ligand_filename
if verbose: print "set move to ", self.dpo['move']['value']
#ndihe
#assumes ligand has torTree
self.dpo['ndihe']['value'] = self.ligand.parser.keys.count("BRANCH")
#self.dpo['ndihe']['value'] = len(self.ligand.torTree.torsionMap)
if verbose: print "set ndihe to ", self.dpo['ndihe']['value']
#torsdof
#caution dpo['torsdof']['value'] is a list [ndihe, 0.3113]
self.dpo['torsdof']['value'][0] = self.ligand.TORSDOF
if verbose: print "set torsdof to ", self.dpo['torsdof']['value']
#types
d = {}
for a in self.ligand.allAtoms:
d[a.autodock_element] = 1
sortKeyList = ['C','A','N','O','S','H','P','n','f','F','c','b','I','M']
lig_types = ""
for t in sortKeyList:
if t in d.keys():
lig_types = lig_types + t
self.ligand.types = lig_types
self.dpo['types']['value'] = self.ligand.types
if verbose: print "set types to ", self.dpo['types']['value']
#about
self.ligand.getCenter()
cen = self.ligand.center
self.dpo['about']['value'] = [round(cen[0],4), round(cen[1],4),\
round(cen[2],4)]
if verbose: print "set about to ", self.dpo['about']['value']
def get_largest_cluster_info(d, rms_tolerance, build_hydrogen_bonds=False, \
report_energy_breakdown=False,
report_unbound_energy=False,
receptor_filename=None, refCoords=None,
subtract_internal_energy=False):
global be_lc
largest = d.clusterer.clustering_dict[rms_tolerance][0]
if verbose: print "set largest to ", len(largest)
for clust in d.clusterer.clustering_dict[rms_tolerance]:
if verbose: print "current largest cluster len= ", len(clust)
if len(clust)>len(largest):
if verbose: print "resetting largest clust: now len=", len(clust)
largest = clust
c = largest[0] #print info about the lowest energy member of this cluster
ostr = " "
dlo_filename = get_filename(d, c)
ostr += dlo_filename + ","
be_lc = c.binding_energy
if subtract_internal_energy:
be_lc = c.binding_energy - c.total_internal
if refCoords:
ostr += "%3d,%3d,%3d,% 8.4f,% 8.4f," %(len(d.clusterer.data), num_clusters, len(largest), be_lc, c.getRMSD(refCoords=refCoords))
else:
ostr += "%3d,%3d,%3d,% 8.4f,% 8.4f," %(len(d.clusterer.data), num_clusters, len(largest), be_lc, c.getRMSD())
if verbose: print "set dlo_filename to ", dlo_filename
#update the coords only if you need to?
d.ch.set_conformation(c)
receptor = None
if build_hydrogen_bonds:
if not receptor_filename:
print "receptor_filename must be specified in order to build_hydrogen_bonds"
return
receptor = Read(receptor_filename)[0]
receptor.buildBondsByDistance()
ostr += construct_hydrogen_bonds(receptor.allAtoms, d.ligMol.allAtoms, verbose=verbose)
if report_energy_breakdown:
if not receptor_filename:
print "receptor_filename must be specified in order to build_hydrogen_bonds"
return
if not receptor:
receptor = Read(receptor_filename)[0]
receptor.buildBondsByDistance()
#ostr += get_energy_breakdown(receptor.allAtoms, d.ligMol.allAtoms, c)
ostr += get_energy_breakdown(receptor.allAtoms, d.ligMol.allAtoms, c.getCoords()[:])
if report_unbound_energy:
if c.unbound_energy is not None:
ostr += ",% 8.4f" %c.unbound_energy
else:
if verbose: print "conformation's unbound energy is None!"
ostr += ", 0.0"
return ostr
def test_Write_4(self):
"""
Test writing out the ATOM records and the CONECT records
without the HETATM
"""
from MolKit import Read
self.mol = Read("Data/1bsr.pdb")[0]
# instanciate a PdbWriter and call the write method with the
# default arguments
from MolKit.pdbWriter import PdbWriter
writer = PdbWriter()
writer.write('Data/1bsr_writer.pdb', self.mol,
records=['ATOM', 'CONECT'], bondOrigin=('File',))
nmol = Read("Data/1bsr_writer.pdb")[0]
nhoh = nmol.chains.residues.get(lambda x: x.type=="HOH")
ohoh = self.mol.chains.residues.get(lambda x: x.type=="HOH")
self.failUnless(len(nhoh)==0)
os.system("rm Data/1bsr_writer.pdb")
def get_largest_cluster_info(
d, rms_tolerance, build_hydrogen_bonds=False, report_energy_breakdown=False, receptor_filename=None, refCoords=None
):
largest = d.clusterer.clustering_dict[rms_tolerance][0]
if verbose:
print "set largest to ", len(largest)
for clust in d.clusterer.clustering_dict[rms_tolerance]:
if verbose:
print "current largest cluster len= ", len(clust)
if len(clust) > len(largest):
if verbose:
print "resetting largest clust: now len=", len(clust)
largest = clust
c = largest[0] # print info about the lowest energy member of this cluster
ostr = " "
dlo_filename = get_filename(d, c)
ostr += dlo_filename + ","
de = c.docking_energy
if refCoords:
ostr += "%3d,%3d,%3d,% 8.4f,% 8.4f," % (
len(d.clusterer.data),
num_clusters,
len(largest),
de,
c.getRMSD(refCoords=refCoords),
)
else:
ostr += "%3d,%3d,%3d,% 8.4f,% 8.4f," % (len(d.clusterer.data), num_clusters, len(largest), de, c.getRMSD())
if verbose:
print "set dlo_filename to ", dlo_filename
# update the coords only if you need to?
d.ch.set_conformation(c)
receptor = None
if build_hydrogen_bonds:
if not receptor_filename:
print "receptor_filename must be specified in order to build_hydrogen_bonds"
return
receptor = Read(receptor_filename)[0]
receptor.buildBondsByDistance()
ostr += construct_hydrogen_bonds(receptor.allAtoms, d.ligMol.allAtoms)
if report_energy_breakdown:
if not receptor_filename:
print "receptor_filename must be specified in order to build_hydrogen_bonds"
return
if not receptor:
receptor = Read(receptor_filename)[0]
receptor.buildBondsByDistance()
# ostr += get_energy_breakdown(receptor.allAtoms, d.ligMol.allAtoms, c)
ostr += get_energy_breakdown(receptor.allAtoms, d.ligMol.allAtoms, c.getCoords()[:])
return ostr
def test_Write_4Char_AtomNames(self):
""" check that atoms with names of 4+char are written properly"""
from MolKit import Read
self.mol = Read("Data/HTet.mol2")[0]
from MolKit.pdbWriter import PdbWriter
writer = PdbWriter()
writer.write('Data/test_HTet.pdb', self.mol)
testmol = Read("Data/test_HTet.pdb")[0]
self.assertEqual(len(self.mol.allAtoms), len(testmol.allAtoms))
#check the 4char atoms have correct element types
self.assertEqual(testmol.allAtoms[0].element, 'C')
self.assertEqual(testmol.allAtoms[1].element, 'Cl')
self.assertEqual(testmol.allAtoms[22].element, 'N')
self.assertEqual(testmol.allAtoms[23].element, 'H')
#check the 4char atoms have reasonable names
self.assertEqual(testmol.allAtoms[0].name, 'C11')
self.assertEqual(testmol.allAtoms[1].name, 'Cl22')
self.assertEqual(testmol.allAtoms[22].name, 'N61')
self.assertEqual(testmol.allAtoms[23].name, 'HN61')
os.system("rm Data/test_HTet.pdb")
def get_best_energy_info(d, rms_tolerance, build_hydrogen_bonds=False, \
report_energy_breakdown=False,
report_unbound_energy=False,
receptor_filename=None, refCoords=None,
subtract_internal_energy=False):
global be
ostr = ""
clust0 = d.clusterer.clustering_dict[rms_tolerance][0]
c = clust0[0]
#find the filename of the best result
dlo_filename = get_filename(d, c)
if verbose: print "set dlo_filename to ", dlo_filename
ostr = dlo_filename + ", "
be = c.binding_energy
if subtract_internal_energy:
be = c.binding_energy - c.total_internal
if refCoords:
ostr += "%3d,%3d,%3d,% 8.4f,% 8.4f," %(len(d.clusterer.data), num_clusters, len(clust0), be, c.getRMSD(refCoords=refCoords))
#ostr += "%3d,%3d,%3d,% 8.4f,% 8.4f," %(len(d.clusterer.data), num_clusters, len(clust0), c.binding_energy, c.getRMSD(refCoords=refCoords))
else:
ostr += "%3d,%3d,%3d,% 8.4f,% 8.4f," %(len(d.clusterer.data), num_clusters, len(clust0), be, c.getRMSD())
#ostr += "%3d,%3d,%3d,% 8.4f,% 8.4f," %(len(d.clusterer.data), num_clusters, len(clust0), c.binding_energy, c.getRMSD())
d.ch.set_conformation(c)
receptor = None
if build_hydrogen_bonds:
if not receptor_filename:
print "receptor_filename must be specified in order to build_hydrogen_bonds"
return
receptor = Read(receptor_filename)[0]
receptor.buildBondsByDistance()
d.ligMol.buildBondsByDistance()
ostr += construct_hydrogen_bonds(receptor.allAtoms, d.ligMol.allAtoms, verbose=verbose)
if report_energy_breakdown:
if not receptor_filename:
print "receptor_filename must be specified in order to build_hydrogen_bonds"
if not receptor:
receptor = Read(receptor_filename)[0]
receptor.buildBondsByDistance()
#build bonds if necessary
d.ligMol.buildBondsByDistance()
#ostr += get_energy_breakdown(receptor.allAtoms, d.ligMol.allAtoms, c)
ostr += get_energy_breakdown(receptor.allAtoms, d.ligMol.allAtoms, c.getCoords()[:])
if report_unbound_energy:
if c.unbound_energy is not None:
ostr += ",% 8.4f" %c.unbound_energy
else:
if verbose: print "conformation's unbound energy is None!"
ostr += ", 0.0"
return ostr
def set_ligand(self, ligand_filename):
self.ligand_filename = os.path.basename(ligand_filename)
if verbose:
print "set ligand_filename to", self.ligand_filename
self.dpo.set_ligand(ligand_filename)
#expect a filename like ind.out.pdbq: get 'ind' from it
self.ligand_stem = string.split(self.ligand_filename,'.')[0]
if verbose: print "set ligand_stem to", self.ligand_stem
self.ligand = Read(ligand_filename)[0]
if self.ligand==None:
print 'ERROR reading: ', ligand_filename
return
if verbose:
print "read ", self.ligand.name
#set dpo:
#move
self.dpo['move']['value'] = self.ligand_filename
if verbose: print "set move to ", self.dpo['move']['value']
#ndihe
#assumes ligand has torTree
self.dpo['ndihe']['value'] = self.ligand.parser.keys.count("BRANCH")
#self.dpo['ndihe']['value'] = len(self.ligand.torTree.torsionMap)
if verbose: print "set ndihe to ", self.dpo['ndihe']['value']
#torsdof
#caution dpo['torsdof4']['value'] is a list [ndihe, 0.274]
try:
self.dpo['torsdof4']['value'][0] = self.ligand.TORSDOF
except:
print 'setting torsdof to ligand.ndihe=', self.ligand.ndihe
self.dpo['torsdof4']['value'][0] = self.ligand.ndihe
if verbose: print "set torsdof4 to ", self.dpo['torsdof4']['value']
#types
self.ligand.types = self.getTypes(self.ligand)
self.dpo['ligand_types']['value'] = self.ligand.types
if verbose: print "set types to ", self.dpo['ligand_types']['value']
#about
self.ligand.getCenter()
cen = self.ligand.center
self.dpo['about']['value'] = [round(cen[0],4), round(cen[1],4),\
round(cen[2],4)]
if verbose: print "set about to ", self.dpo['about']['value']
def set_ligand(self, ligand_filename):
self.ligand_filename = os.path.basename(ligand_filename)
if self.verbose:
print "set ligand_filename to", self.ligand_filename
self.gpo.set_ligand(ligand_filename)
#expect a filename like ind.out.pdbq: get 'ind' from it
self.ligand_stem = string.split(self.ligand_filename,'.')[0]
if self.verbose: print "set ligand_stem to", self.ligand_stem
self.ligand = Read(ligand_filename)[0]
#IS THIS USEFUL???
self.gpo.ligand = self.ligand
if self.verbose: print "read ", self.ligand.name
#set gpo:
#types
d = {}
for a in self.ligand.allAtoms:
d[a.autodock_element] = 1
sortKeyList = ['C','A','N','O','S','H','P','n','f','F','c','b','I','M']
lig_types = ""
for t in sortKeyList:
if t in d.keys():
lig_types = lig_types + t
self.ligand.types = lig_types
self.gpo['types']['value'] = self.ligand.types
if self.verbose: print "set types to ", self.gpo['types']['value']
#gridcenter
self.ligand.center = self.ligand.getCenter()
if self.size_box_to_include_ligand:
self.getSideLengths(self.ligand) #sets ligand.center
cen = self.ligand.center
self.gpo['gridcenter']['value'] = [round(cen[0],4), round(cen[1],4),\
round(cen[2],4)]
self.gpo['gridcenterAuto']['value'] = 0
if self.verbose: print "set gridcenter to ", self.gpo['gridcenter']['value']
#only make the box bigger from npts, do not make it smaller
for ix, val in enumerate(self.gpo['npts']['value']):
if hasattr(self.ligand, 'npts'):
npts = self.ligand.npts
if npts[ix]>val:
if self.verbose: print "increasing ", ix, " grid dimension to ", val
self.gpo['npts']['value'][ix] = npts[ix]
def get_best_energy_info(
d, rms_tolerance, build_hydrogen_bonds=False, report_energy_breakdown=False, receptor_filename=None, refCoords=None
):
ostr = ""
clust0 = d.clusterer.clustering_dict[rms_tolerance][0]
c = clust0[0]
# find the filename of the best result
dlo_filename = get_filename(d, c)
if verbose:
print "set dlo_filename to ", dlo_filename
ostr = dlo_filename + ", "
de = c.docking_energy
if refCoords:
ostr += "%3d,%3d,%3d,% 8.4f,% 8.4f," % (
len(d.clusterer.data),
num_clusters,
len(clust0),
de,
c.getRMSD(refCoords=refCoords),
)
else:
ostr += "%3d,%3d,%3d,% 8.4f,% 8.4f," % (len(d.clusterer.data), num_clusters, len(clust0), de, c.getRMSD())
d.ch.set_conformation(c)
receptor = None
if build_hydrogen_bonds:
if not receptor_filename:
print "receptor_filename must be specified in order to build_hydrogen_bonds"
return
receptor = Read(receptor_filename)[0]
receptor.buildBondsByDistance()
d.ligMol.buildBondsByDistance()
ostr += construct_hydrogen_bonds(receptor.allAtoms, d.ligMol.allAtoms)
if report_energy_breakdown:
if not receptor_filename:
print "receptor_filename must be specified in order to build_hydrogen_bonds"
if not receptor:
receptor = Read(receptor_filename)[0]
receptor.buildBondsByDistance()
# build bonds if necessary
d.ligMol.buildBondsByDistance()
# ostr += get_energy_breakdown(receptor.allAtoms, d.ligMol.allAtoms, c)
ostr += get_energy_breakdown(receptor.allAtoms, d.ligMol.allAtoms, c.getCoords()[:])
return ostr
if not receptorfilename:
print 'compute_AutoDock41_score: receptorfilename must be specified.'
usage()
sys.exit()
if not ligandfilename:
print 'compute_AutoDock41_score: ligandfilename must be specified.'
usage()
sys.exit()
ad_scorer = AutoDock41Scorer(exclude_torsFreeEnergy=exclude_torsFreeEnergy)
if parameter_library_filename is not None:
ad_scorer.read_parameter_file(parameter_library_filename)
supported_types = ad_scorer.supported_types
receptor = Read(receptorfilename)[0]
assert os.path.splitext(receptor.parser.filename)[-1]=='.pdbqt',"receptor file not in required '.pdbqt' format"
if verbose: print 'read ', receptorfilename
receptor.buildBondsByDistance()
rec_non_std = ""
non_std_types = check_types(receptor, supported_types)
if len(non_std_types):
rec_non_std = non_std_types[0]
if len(non_std_types)>1:
for t in non_std_types[1:]:
rec_non_std = rec_non_std + '_' + t
#check format of receptor
ligand = Read(ligandfilename)[0]
assert os.path.splitext(ligand.parser.filename)[-1]=='.pdbqt',"ligand file not in required '.pdbqt' format"
if verbose: print 'read ', ligandfilename
ligand.buildBondsByDistance()
def setUp(self):
from MolKit import Read
self.ind = Read('Data/indinavir.pdb')[0]
self.ind.buildBondsByDistance()
class AromaticCycleBondTests(unittest.TestCase):
def setUp(self):
from MolKit import Read
self.ind = Read('Data/indinavir.pdb')[0]
self.ind.buildBondsByDistance()
def tearDown(self):
"""
clean-up
"""
del(self.ind)
def test_AromaticCycleBondSelector_select_all(self):
"""
test AromaticCycleBond select: all aromatic bonds in ind
This bondSelector uses PyBabel aromatic object
#nb doesnot count any in merged ring (?)
"""
ABS = AromaticCycleBondSelector()
ats = self.ind.allAtoms
bnds = ats.bonds[0]
resultBnds = ABS.select(bnds)
#print ABS.getAtoms(resultBnds).name
self.assertEqual(len(resultBnds), 18)
def test_AromaticCycleBond2Selector_select_all(self):
"""
test AromaticCycleBond2 select: all aromatic bonds in ind
This bndSelector uses autotors calculation of normals between
adjacent atoms in cycles to judge aromaticity
#nb does count aromatic bonds in merged ring (?)
"""
ABS2 = AromaticCycleBondSelector2()
ats = self.ind.allAtoms
bnds = ats.bonds[0]
resultBnds = ABS2.select(bnds)
#print ABS2.getAtoms(resultBnds).name
self.assertEqual(len(resultBnds), 18)
self.assertEqual(len(ABS2.getAtoms(resultBnds)), 18)
def test_AromaticCycleBond2Selector_select_all2(self):
"""
This is repeated because repeating it broke when all tests were in
one class....(???)
"""
ABS2 = AromaticCycleBondSelector2()
ats = self.ind.allAtoms
bnds = ats.bonds[0]
resultBnds = ABS2.select(bnds)
#print ABS2.getAtoms(resultBnds).name
self.assertEqual(len(resultBnds), 18)
self.assertEqual(len(ABS2.getAtoms(resultBnds)), 18)
def test_AromaticCycleBond2Selector_select_all3(self):
"""
This is repeated because repeating it broke when all tests were in
one class....(???)
"""
ABS2 = AromaticCycleBondSelector2()
ats = self.ind.allAtoms
bnds = ats.bonds[0]
resultBnds = ABS2.select(bnds)
#print ABS2.getAtoms(resultBnds).name
self.assertEqual(len(resultBnds), 18)
self.assertEqual(len(ABS2.getAtoms(resultBnds)), 18)
def setUp(self):
from MolKit import Read
self.mol = Read('Data/1crn_2.pdb')[0]
self.mol.buildBondsByDistance()