def importModuleStructure(self):
""" Find MODULE structure file and import into Analysis (or attempt to, this will probably
barf as MODULE pdb files are not good)
"""
modulePdbFile = self.findModuleExportPdbFile()
if not modulePdbFile: return
# this stores the re-hacked MODULE pdb file and then removes it on close
tempPdb = tempfile.NamedTemporaryFile(mode='w',
suffix='.pdb',
dir=self.moduleTempDir,
delete=False)
tempPdb.close()
# if file found then add to project
if os.path.isfile(modulePdbFile):
moduleIo.BlackledgeToPdbConverter(modulePdbFile, tempPdb)
structure = getStructureFromFile(
self.inputStructure.parent.molSystem, tempPdb)
os.unlink(tempPdb)
def cloudHomologueAssign(clouds,
chain,
pdbFileName,
threshold=3.0,
nSteps=3000,
graph=None,
progressBar=None):
project = chain.root
molSystem = newMolSystem(project)
structure = getStructureFromFile(molSystem, pdbFileName) # Done
chainH = structure.coordChains[0].chain
# Match the amide protons of the homologue structure to the coordinates
# of the amide protons in the mean of the family of clouds
# - returns a mapping of spin system to residue
focMapping = matchCloudsToHomologue(clouds, chainH, structure, threshold)
spinSystems = focMapping.values()
# Use a sequence bases alignment to determine which residues
# of the homologue chain are equivalent to thos ein the subject chain
seqMapping = getChainResidueMapping(chainH, chain) # Done
# Generate an assignment mapping of spin system to residue for the subject
# by comparing the mapping obtained by matching the clouds to the homologue structure
# with the mapping generated by a sequence alignment
assignment = linkCloudsToSequence(focMapping, seqMapping) # Done
# Assign spin systems to residues according to the cloud-via-homologue mapping
assignSpinSystems(assignment) # Done
# Use CloudThreader to fill in rmaining and mismatched sequence
# TBD: Will eventually fill in the side chain atoms
s1, s2, assignment = cloudThreader(chain, clouds, spinSystems, nSteps,
graph, 1, progressBar) # Done
# Do a final assignment of spin systems to residues after CLoudsThreader
assignSpinSystems(assignment) # Done
return s1, s2, assignment
def runMeccano(self):
#
#
# Input checks first
#
#
warning = ''
if not self.molSystem:
warning += 'No molecular system selected\n'
if not self.chain:
warning += 'No chain selected\n'
if not self.constraintSet:
warning += 'No selected constraint set\n'
else:
constraintLists = [cl for cl in self.constraintSet.constraintLists if cl.useForMeccano]
if not constraintLists:
warning += 'No constraint lists selected for use\n'
first, last = self.updateResidueRanges()
if (last-first) < 2:
warning += 'Too few peptide planes selected\n'
if warning:
showWarning('Cannot run MECCANO','Encountered the following problems:\n' + warning)
return
if not self.run:
self.run = self.makeSimRun()
self.updateRunParams()
if self.toggleCopyShifts.get() and self.shiftList:
shiftList = self.run.findFirstOutputMeasurementList(className='ShiftList')
if not shiftList:
shiftList = self.project.currentNmrProject.newShiftList(name='Meccano Input')
self.run.setOutputMeasurementLists([shiftList,])
shiftDict = {}
for shift in shiftList.shifts:
shiftDict[shift.resonance] = shift
for shift in self.shiftList.shifts:
resonance = shift.resonance
resonanceSet = resonance.resonanceSet
if resonanceSet:
atom = resonanceSet.findFirstAtomSet().findFirstAtom()
if (atom.name == 'C') and (atom.residue.molResidue.molType == 'protein'):
shift2 = shiftDict.get(resonance)
if shift2:
shift2.value = shift.value
shift2.error = shift.error
else:
shiftList.newShift(resonance=resonance, value=shift.value, error=shift.error)
#
#
# Accumulate data from CCPN data model & GUI
#
#
# Sequence
residues = self.chain.sortedResidues()
residueDict = {}
seqData = []
for residue in residues:
molResidue = residue.molResidue
code1Letter = molResidue.chemComp.code1Letter
if not code1Letter:
msg = 'Encountered non-standard residue type: %s'
showWarning('Cannot run MECCANO', msg % residue.ccpCode)
return
seqCode = residue.seqCode
seqData.append((seqCode, code1Letter))
residueDict[seqCode] = residue.chemCompVar.chemComp.code3Letter
# Media, RDCs & Dihedrals
rdcLists = []
dihedralLists = []
for constraintList in constraintLists:
if constraintList.className == 'RdcConsraintList':
if constraintList.conditionState:
rdcLists.append(constraintList)
elif constraintList.className == 'DihedralConstraintList':
dihedralLists.append(dihedralLists)
f = PI_OVER_180
mediaData = []
for constraintList in rdcLists:
medium = constraintList.conditionState
dynamicTensor = medium.dynamicAlignment
staticTensor = medium.staticAlignment
if not (dynamicTensor or staticTensor):
continue
if dynamicTensor:
dynamicTensorData = ['Dynamic', dynamicTensor.aAxial, dynamicTensor.aRhombic,
f*dynamicTensor.alpha, f*dynamicTensor.beta, f*dynamicTensor.gamma]
if staticTensor:
staticTensorData = ['Static', staticTensor.aAxial, staticTensor.aRhombic,
f*staticTensor.alpha, f*staticTensor.beta, f*staticTensor.gamma]
if not dynamicTensor:
dynamicTensorData = staticTensorData
elif not staticTensor:
staticTensorData = dynamicTensorData
rdcData = []
for restraint in constraintList.constraints:
items = list(restraint.items)
if len(items) != 1:
continue
resonanceA, resonanceB = [fr.resonance for fr in items[0].resonances]
resonanceSetA = resonanceA.resonanceSet
if not resonanceSetA:
continue
resonanceSetB = resonanceB.resonanceSet
if not resonanceSetB:
continue
resNameA = getResonanceName(resonanceA)
resNameB = getResonanceName(resonanceB)
residueA = resonanceSetA.findFirstAtomSet().findFirstAtom().residue
residueB = resonanceSetB.findFirstAtomSet().findFirstAtom().residue
seqA = residueA.seqCode
seqB = residueB.seqCode
value = restraint.targetValue
error = restraint.error
if error is None:
key = [resNameA,resNameB]
key.sort()
sigma = DEFAULT_ERRORS.get(tuple(key), 1.0)
rdcData.append([seqA, resNameA, seqB, resNameB, value, error])
mediaData.append((dynamicTensorData,staticTensorData,rdcData))
oneTurn = 360.0
dihedralDict = {}
for constraintList in dihedralLists:
for restraint in constraintList.constraints:
items = list(restraint.items)
if len(items) != 1:
continue
item = items[0]
resonances = [fr.resonance for fr in item.resonances]
resonanceSets = [r.resonanceSet for r in resonances]
if None in resonanceSets:
continue
atoms = [rs.findFirstAtomSet().findFirstAtom() for rs in resonanceSets]
atomNames = [a.name for a in atoms]
if atomNames == PHI_ATOM_NAMES:
isPhi = True
elif atomNames == PSI_ATOM_NAMES:
isPhi = False
else:
continue
residue = atoms[2].residue
if residue.chain is not self.chain:
continue
if isPhi:
residuePrev = getLinkedResidue(residue, linkCode='prev')
if not residuePrev:
continue
atomC0 = residuePrev.findFirstAtom(name='C')
atomN = residue.findFirstAtom(name='N')
atomCa = residue.findFirstAtom(name='CA')
atomC = residue.findFirstAtom(name='C')
atoms2 = [atomC0, atomN, atomCa, atomC]
else:
residueNext = getLinkedResidue(residue, linkCode='next')
if not residueNext:
continue
atomN = residue.findFirstAtom(name='N')
atomCa = residue.findFirstAtom(name='CA')
atomC = residue.findFirstAtom(name='C')
atomN2 = residueNext.findFirstAtom(name='N')
atoms2 = [atomN, atomCa, atomC, atomN2]
if atoms != atoms2:
continue
value = item.targetValue
error = item.error
if error is None:
upper = item.upperLimit
lower = item.lowerLimit
if (upper is not None) and (lower is not None):
dUpper = angleDifference(value, lower, oneTurn)
dLower = angleDifference(upper, value, oneTurn)
error = max(dUpper, dLower)
elif lower is not None:
error = angleDifference(value, lower, oneTurn)
elif upper is not None:
error = angleDifference(upper, value, oneTurn)
else:
error = 30.0 # Arbitrary, but sensible for TALOS, DANGLE
seqCode = residue.seqCode
if not dihedralDict.has_key(seqCode):
dihedralDict[seqCode] = [None, None, None, None] # Phi, Psi, PhiErr, PsiErr
if isPhi:
dihedralDict[seqCode][0] = value
dihedralDict[seqCode][2] = error
else:
dihedralDict[seqCode][1] = value
dihedralDict[seqCode][3] = error
phipsiData = []
seqCodes = dihedralDict.keys()
seqCodes.sort()
for seqCode in seqCodes:
data = dihedralDict[seqCode]
if None not in data:
phi, psi, phiErr, psiErr = data
phipsiData.append((seqCode, phi, psi, phiErr, psiErr))
# User options
firstPPlaneFrag = self.firstResEntry.get() or 1
lastPPlaneFrag = self.lastResEntry.get() or 1
ppNbMin = self.numOptPlaneEntry.get() or 1
minValueBest = self.numOptHitsEntry.get() or 2
maxValueBest = self.maxOptStepEntry.get() or 5
strucData = Meccano.runFwd(firstPPlaneFrag, lastPPlaneFrag, ppNbMin,
minValueBest, maxValueBest, RAMACHANDRAN_DATABASE,
seqData, mediaData, phipsiData)
if strucData:
fileName = 'CcpnMeccanoPdb%f.pdb' % time.time()
fileObj = open(fileName, 'w')
ch = self.chain.pdbOneLetterCode.strip()
if not ch:
ch = self.chain.code[0].upper()
i = 1
for atomType, resNb, x, y, z in strucData:
resType = residueDict.get(resNb, '???')
line = PDB_FORMAT % ('ATOM',i,'%-3s' % atomType,'',resType,ch,resNb,'',x,y,z,1.0,1.0)
i += 1
fileObj.close()
ensemble = getStructureFromFile(self.molSystem, fileName)
if not self.toggleWritePdbFile.get():
os.unlink(fileName)
self.run.outputEnsemble = ensemble
self.run = None
self.updateRuns()
def loadPdb(filename, molSystem):
structure = getStructureFromFile(molSystem, filename, doWarnings=False)
makeStructureGeneration(structure)
print "Structures loaded"