def setResidueInformation(self, resInfo=None):
"""
set residue information based on resName - it is set here since it is a convenience thing
"""
# resType - determines interaction parameters
if self.resName in resInfo['resType']:
self.resType = resInfo['resType'][self.resName]
# Q - group charge
if self.resName in resInfo['Q']:
self.Q = resInfo['Q'][self.resName]
else:
self.Q = 0.00
# type - 'amino-acid' / 'ion' / 'ligand' / 'N-terminus' / 'C-terminus'
if self.resName in lib.residueList("standard"):
self.type = "amino-acid"
elif self.resName in resInfo['type']:
self.type = resInfo['type'][self.resName]
# pKa_mod - model or water pKa value
if self.resName in resInfo['pKa']:
self.pKa_mod = resInfo['pKa'][self.resName]
self.pKa_pro = resInfo['pKa'][self.resName]
else:
self.pKa_mod = resInfo['pKa']['default']
self.pKa_pro = resInfo['pKa']['default']
def setResidueInformation(self, resInfo=None):
"""
set residue information based on resName - it is set here since it is a convenience thing
"""
# resType - determines interaction parameters
if self.resName in resInfo['resType']:
self.resType = resInfo['resType'][self.resName]
# Q - group charge
if self.resName in resInfo['Q']:
self.Q = resInfo['Q'][self.resName]
else:
self.Q = 0.00
# type - 'amino-acid' / 'ion' / 'ligand' / 'N-terminus' / 'C-terminus'
if self.resName in lib.residueList("standard"):
self.type = "amino-acid"
elif self.resName in resInfo['type']:
self.type = resInfo['type'][self.resName]
# pKa_mod - model or water pKa value
if self.resName in resInfo['pKa']:
self.pKa_mod = resInfo['pKa'][self.resName]
self.pKa_pro = resInfo['pKa'][self.resName]
else:
self.pKa_mod = resInfo['pKa']['default']
self.pKa_pro = resInfo['pKa']['default']
def setupReferenceLists(self):
"""
setup lists with references to residues and atoms needed to calculate pKa values
lists: residue_dictionary
NHlist
COlist
propka_residues
"""
# initializing empty dictionary
self.residue_dictionary = {}
for key in lib.residueList("propka1"):
self.residue_dictionary[key] = []
self.residue_dictionary['ION'] = []
for chain in self.chains:
# make list with N-H & C=O fragments
chain.appendToBackBoneLists(self.NHlist, self.COlist)
# setup the residue dictionary with references to all residues
chain.appendToResidueDictionary(self.residue_dictionary)
# residues with propka interactions,
# IMPORTANT, this list is assumed to be ordered according to resNumb to loop ver pairs
chain.appendPropkaResidues(self.propka_residues)
return
def setupReferenceLists(self):
"""
setup lists with references to residues and atoms needed to calculate pKa values
lists: residue_dictionary
NHlist
COlist
propka_residues
"""
# initializing empty dictionary
self.residue_dictionary = {}
for key in lib.residueList("propka1"):
self.residue_dictionary[key] = []
self.residue_dictionary['ION'] = []
for chain in self.chains:
# make list with N-H & C=O fragments
chain.appendToBackBoneLists(self.NHlist, self.COlist)
# setup the residue dictionary with references to all residues
chain.appendToResidueDictionary(self.residue_dictionary)
# residues with propka interactions,
# IMPORTANT, this list is assumed to be ordered according to resNumb to loop ver pairs
chain.appendPropkaResidues(self.propka_residues)
return
def calculateTotalPKA(self):
"""
Calculates the total pKa from pKa_mod and the determinants
"""
residue_list = lib.residueList("propka1")
for residue in self.residues:
if residue.resName in residue_list:
residue.calculateTotalPKA()
def calculateTotalPKA(self):
"""
Calculates the total pKa from pKa_mod and the determinants
"""
residue_list = lib.residueList("propka1")
for residue in self.residues:
if residue.resName in residue_list:
residue.calculateTotalPKA()
def checked(self, options=None):
"""
Checks that I understand all residues.
"""
excluded_resNames = lib.residueList("excluded")
if self.resName in excluded_resNames:
return False
else:
return True
def appendBasicResidues(self, basic_residues, pka_residues):
"""
Creates and returns a list for base-backbone interactions
"""
basic_residue_list = lib.residueList("bases")
for residue in self.residues:
if residue.resName in basic_residue_list:
basic_residues.append(residue)
pka_residues.append(residue)
def appendBasicResidues(self, basic_residues, pka_residues):
"""
Creates and returns a list for base-backbone interactions
"""
basic_residue_list = lib.residueList("bases")
for residue in self.residues:
if residue.resName in basic_residue_list:
basic_residues.append(residue)
pka_residues.append(residue)
def checked(self, options=None):
"""
Checks that I understand all residues.
"""
excluded_resNames = lib.residueList("excluded")
if self.resName in excluded_resNames:
return False
else:
return True
def printDeterminants(self):
"""
prints the resulting pKa values and determinants to stdout
"""
# Get same order as propka2.0
residue_list = lib.residueList("propka1")
for residue_type in residue_list:
for residue in self.residues:
if residue.resName == residue_type:
print("%s" % ( residue.getDeterminantString() ))
def printDeterminants(self):
"""
prints the resulting pKa values and determinants to stdout
"""
# Get same order as propka2.0
residue_list = lib.residueList("propka1")
for residue_type in residue_list:
for residue in self.residues:
if residue.resName == residue_type:
pka_print("%s" % (residue.getDeterminantString()))
def printSummary(self):
"""
prints the resulting pKa values in summary form to stdout
"""
residue_list = lib.residueList("propka1")
for residue_type in residue_list:
for residue in self.residues:
if residue.resName == residue_type:
str = residue.getSummaryString()
pka_print(str)
def printSummary(self):
"""
prints the resulting pKa values in summary form to stdout
"""
residue_list = lib.residueList("propka1")
for residue_type in residue_list:
for residue in self.residues:
if residue.resName == residue_type:
str = residue.getSummaryString()
print(str)
def appendAcidicResidues(self, acidic_residues, pka_residues):
"""
Creates and returns a list for acid-backbone interactions
"""
acidic_residue_list = lib.residueList("acids")
for residue in self.residues:
if residue.resName in acidic_residue_list:
if residue.location == "BONDED":
""" do nothing """
else:
acidic_residues.append(residue)
pka_residues.append(residue)
def appendAcidicResidues(self, acidic_residues, pka_residues):
"""
Creates and returns a list for acid-backbone interactions
"""
acidic_residue_list = lib.residueList("acids")
for residue in self.residues:
if residue.resName in acidic_residue_list:
if residue.location == "BONDED":
""" do nothing """
else:
acidic_residues.append(residue)
pka_residues.append(residue)
def calculateCharge(self, pH):
"""
Calculates the total charge of this chain at pH 'pH'
"""
propka1_residue_labels = lib.residueList("propka1")
Qpro = 0.00
Qmod = 0.00
for residue in self.residues:
if residue.resName in propka1_residue_labels:
Qpro += residue.getCharge(pH, "folded")
Qmod += residue.getCharge(pH, "unfolded")
return Qpro, Qmod
def writeSummary(self, file, verbose=True):
"""
prints the resulting pKa values in summary form to stdout
"""
residue_list = lib.residueList("propka1")
for residue_type in residue_list:
for residue in self.residues:
if residue.resName == residue_type:
str = "%s\n" % ( residue.getSummaryString() )
file.write(str)
if verbose == True:
print(str)
def calculateCharge(self, pH):
"""
Calculates the total charge of this chain at pH 'pH'
"""
propka1_residue_labels = lib.residueList("propka1")
Qpro = 0.00
Qmod = 0.00
for residue in self.residues:
if residue.resName in propka1_residue_labels:
Qpro += residue.getCharge(pH, "folded")
Qmod += residue.getCharge(pH, "unfolded")
return Qpro, Qmod
def writeSummary(self, file, verbose=True):
"""
prints the resulting pKa values in summary form to stdout
"""
residue_list = lib.residueList("propka1")
for residue_type in residue_list:
for residue in self.residues:
if residue.resName == residue_type:
str = "%s\n" % (residue.getSummaryString())
file.write(str)
if verbose == True:
pka_print(str)
def writeDeterminants(self, file, verbose=True):
"""
prints the resulting pKa values and determinants to stdout
"""
# Get same order as propka2.0
residue_list = lib.residueList("propka1")
for residue_type in residue_list:
for residue in self.residues:
if residue.resName == residue_type:
str = "%s\n" % ( residue.getDeterminantString() )
file.write(str)
if verbose == True:
print(str)
def writeDeterminants(self, file, verbose=True):
"""
prints the resulting pKa values and determinants to stdout
"""
# Get same order as propka2.0
residue_list = lib.residueList("propka1")
for residue_type in residue_list:
for residue in self.residues:
if residue.resName == residue_type:
str = "%s\n" % (residue.getDeterminantString())
file.write(str)
if verbose == True:
pka_print(str)
def getSummarySection(protein, verbose=False):
"""
prints out the pka-section of the result
"""
# getting the same order as in propka2.0
residue_list = lib.residueList("propka1")
str = "%s\n" % (getSummaryHeader())
# printing pKa summary
for chain in protein.chains:
for residue_type in residue_list:
for residue in chain.residues:
if residue.resName == residue_type:
str += "%s\n" % (residue.getSummaryString())
return str
def getSummarySection(protein, verbose=False):
"""
prints out the pka-section of the result
"""
# getting the same order as in propka2.0
residue_list = lib.residueList("propka1")
str = "%s\n" % ( getSummaryHeader() )
# printing pKa summary
for chain in protein.chains:
for residue_type in residue_list:
for residue in chain.residues:
if residue.resName == residue_type:
str += "%s\n" % ( residue.getSummaryString() )
return str
def setIonDeterminants(protein, version=None):
"""
adding ion determinants/perturbations
"""
ionizable_residues = lib.residueList("propka1")
for residue in protein.propka_residues:
if residue.resName in ionizable_residues:
for ion in protein.residue_dictionary["ION"]:
distance = calculate.InterResidueDistance(residue, ion)
if distance < version.coulomb_cutoff[1]:
label = "%s%4d%2s" % (ion.resName, ion.resNumb, ion.chainID)
weight = version.calculatePairWeight(residue.Nmass, ion.Nmass)
# the pKa of both acids and bases are shifted up by negative ions (and vice versa)
value = (-ion.Q) * version.calculateCoulombEnergy(distance, weight)
newDeterminant = Determinant(label, value)
residue.determinants[2].append(newDeterminant)
def setIonDeterminants(protein, version=None):
"""
adding ion determinants/perturbations
"""
ionizable_residues = lib.residueList("propka1")
for residue in protein.propka_residues:
if residue.resName in ionizable_residues:
for ion in protein.residue_dictionary["ION"]:
distance = calculate.InterResidueDistance(residue, ion)
if distance < version.coulomb_cutoff[1]:
label = "%s%4d%2s" % (ion.resName, ion.resNumb, ion.chainID)
weight = version.calculatePairWeight(residue.Nmass, ion.Nmass)
# the pKa of both acids and bases are shifted up by negative ions (and vice versa)
value = (-ion.Q) * version.calculateCoulombEnergy(distance, weight)
newDeterminant = Determinant(label, value)
residue.determinants[2].append(newDeterminant)
def calculateFoldingEnergy(self, pH=None, reference=None, options=None):
"""
Calculates the folding energy given the correct pKa values; given
pKa values calculated for the entire protein 'all chains' will give
the total folding energy partitioned to chains, not chain folding
energies.
"""
propka1_residue_labels = lib.residueList("propka1")
dG = 0.00
for residue in self.residues:
if residue.resName in propka1_residue_labels:
ddG = residue.calculateFoldingEnergy(pH=pH, reference=reference, options=options)
dG += ddG
#print "%s %6.2lf" % (residue.label, ddG)
return dG
def calculateDesolvation(self, atoms, version=None, options=None):
"""
Calculates the desolvation for each residue in this chain. Note, 'atoms' contains ALL atoms, not only
atoms belonging to this chain. Thus, you will get the desolvation of this chain in the presence of all.
"""
propka1_list = lib.residueList("propka1")
for residue in self.residues:
if residue.location == "BONDED":
do_it = False
elif residue.type == "ion":
do_it = True
elif residue.resName in propka1_list:
do_it = True
else:
do_it = False
if do_it == True:
residue.calculateDesolvation(atoms, version=version, options=options)
def calculateFoldingEnergy(self, pH=None, reference=None, options=None):
"""
Calculates the folding energy given the correct pKa values; given
pKa values calculated for the entire protein 'all chains' will give
the total folding energy partitioned to chains, not chain folding
energies.
"""
propka1_residue_labels = lib.residueList("propka1")
dG = 0.00
for residue in self.residues:
if residue.resName in propka1_residue_labels:
ddG = residue.calculateFoldingEnergy(pH=pH,
reference=reference,
options=options)
dG += ddG
#print "%s %6.2lf" % (residue.label, ddG)
return dG
def makeSequence(self, mutation=None):
"""
creates a sequence from the chain object to be used in Scwrl-mutations
"""
sequence = ""
for residue in self.residues:
if residue.resName in lib.residueList("standard"):
if mutation == None:
code, resName = lib.convertResidueCode(resName=residue.resName)
sequence += code.lower()
elif residue.label in mutation:
new_label = mutation[residue.label]['label']
code, resName = lib.convertResidueCode(resName=new_label[:3])
sequence += code.upper()
else:
code, resName = lib.convertResidueCode(resName=residue.resName)
sequence += code.lower()
return sequence
def makeBackBoneInteractionList(self):
"""
making a nice 'object' to make the acid/base interactions nice and easy to loop over in 'determinants'
backbone_interactions = [[acids, NH], [bases, CO]]
"""
backbone_interactions = []
# --- ACIDS ---
residues = []
for resName in lib.residueList("acids"):
residues.extend(self.residue_dictionary[resName])
backbone_interactions.append([residues, self.NHlist])
# --- BASES ---
residues = []
# famous propka2.0 exceptions
for resName in ["HIS"]:
residues.extend(self.residue_dictionary[resName])
backbone_interactions.append([residues, self.COlist])
return backbone_interactions
def makeBackBoneInteractionList(self):
"""
making a nice 'object' to make the acid/base interactions nice and easy to loop over in 'determinants'
backbone_interactions = [[acids, NH], [bases, CO]]
"""
backbone_interactions = []
# --- ACIDS ---
residues = []
for resName in lib.residueList("acids"):
residues.extend(self.residue_dictionary[resName])
backbone_interactions.append([residues, self.NHlist])
# --- BASES ---
residues = []
# famous propka2.0 exceptions
for resName in ["HIS"]:
residues.extend(self.residue_dictionary[resName])
backbone_interactions.append([residues, self.COlist])
return backbone_interactions
def checkResidue(self, options=None):
"""
Checks that I understand all residues.
"""
residue_list = lib.residueList("all")
rename = {
"LYP": "LYS",
"CYX": "CYS",
"HSD": "HIS",
}
# renaming residue if in rename dictionary
if self.resName in rename:
newName = rename[self.resName]
if options.verbose == True:
pka_print("Warning: renaming %s to %s" %
(self.resName, newName))
self.resName = newName
for atom in self.atoms:
atom.resName = newName
else:
"""OK - lets rock"""
# after rename residue cases, check heavy atoms
if self.resName in residue_list:
# OK - lets rock
self.checkAtoms(options=options)
# Chresten's stuff
elif self.type == "ion":
outstr = "%s%4d - OK %s" % (self.resName, self.resNumb, self.type)
pka_print(outstr)
#elif self.resName in version.ions.keys():
# str = "%-3s%4d - %s with charge %+d" % (self.resName,
# self.resNumb,
# version.ions_long_names[self.resName],
# version.ions[self.resName])
# pka_print(str)
else:
outstr = "%s%4d - unidentified residue" % (self.resName,
self.resNumb)
pka_print(outstr)
def main():
"""
Simple check on the corresponding atoms-dictionary
"""
corresponding_atoms = makeCorrespondingAtomNames()
resNames = residueList("standard")
for resName1 in resNames:
for resName2 in resNames:
str = "%s %s \n" % (resName1, resName2)
for i in range(len(corresponding_atoms[resName1][resName2])):
name1, name2 = corresponding_atoms[resName1][resName2][i]
str += " %-3s %-3s" % (name1, name2)
name1, name2 = corresponding_atoms[resName2][resName1][i]
str += "%-5s %-3s %-3s\n" % (" ", name1, name2)
print(str)
if resName1 == resName2:
break
def calculateDesolvation(self, atoms, version=None, options=None):
"""
Calculates the desolvation for each residue in this chain. Note, 'atoms' contains ALL atoms, not only
atoms belonging to this chain. Thus, you will get the desolvation of this chain in the presence of all.
"""
propka1_list = lib.residueList("propka1")
for residue in self.residues:
if residue.location == "BONDED":
do_it = False
elif residue.type == "ion":
do_it = True
elif residue.resName in propka1_list:
do_it = True
else:
do_it = False
if do_it == True:
residue.calculateDesolvation(atoms,
version=version,
options=options)
def main():
"""
Simple check on the corresponding atoms-dictionary
"""
corresponding_atoms = makeCorrespondingAtomNames()
resNames = residueList("standard")
for resName1 in resNames:
for resName2 in resNames:
str = "%s %s \n" % (resName1, resName2)
for i in range(len(corresponding_atoms[resName1][resName2])):
name1, name2 = corresponding_atoms[resName1][resName2][i]
str += " %-3s %-3s" % (name1, name2)
name1, name2 = corresponding_atoms[resName2][resName1][i]
str += "%-5s %-3s %-3s\n" % (" ", name1, name2)
print(str)
if resName1 == resName2:
break
def checkResidue(self, options=None):
"""
Checks that I understand all residues.
"""
residue_list = lib.residueList("all")
rename = {"LYP": "LYS",
"CYX": "CYS",
"HSD": "HIS",
}
# renaming residue if in rename dictionary
if self.resName in rename:
newName = rename[self.resName]
if options.verbose == True:
print("Warning: renaming %s to %s" % (self.resName, newName))
self.resName = newName
for atom in self.atoms:
atom.resName = newName
else:
"""OK - lets rock"""
# after rename residue cases, check heavy atoms
if self.resName in residue_list:
# OK - lets rock
self.checkAtoms(options=options)
# Chresten's stuff
elif self.type == "ion":
outstr = "%s%4d - OK %s" % (self.resName, self.resNumb, self.type)
print(outstr)
#elif self.resName in version.ions.keys():
# str = "%-3s%4d - %s with charge %+d" % (self.resName,
# self.resNumb,
# version.ions_long_names[self.resName],
# version.ions[self.resName])
# print(str)
else:
outstr = "%s%4d - unidentified residue" % (self.resName, self.resNumb)
print(outstr)
def getDeterminantSection(protein, verbose=False):
"""
prints out the pka-section of the result
"""
# getting the same order as in propka2.0
residue_list = lib.residueList("propka1")
str = "%s\n" % (getDeterminantsHeader())
# printing determinants
for chain in protein.chains:
for residue_type in residue_list:
for residue in chain.residues:
if residue.resName == residue_type:
str += "%s\n" % (residue.getDeterminantString())
# Add a warning in case of coupled residues
if protein.coupled_residues:
str += "%s\n" % (getTheLine())
str += " Residues that are found to be 'coupled', i.e. titrates together, has been marked by '*' in the above\n"
str += " section. Please rerun PropKa with the --display-coupled-residues option for detailed information.\n"
return str
def makeSequence(self, mutation=None):
"""
creates a sequence from the chain object to be used in Scwrl-mutations
"""
sequence = ""
for residue in self.residues:
if residue.resName in lib.residueList("standard"):
if mutation == None:
code, resName = lib.convertResidueCode(
resName=residue.resName)
sequence += code.lower()
elif residue.label in mutation:
new_label = mutation[residue.label]['label']
code, resName = lib.convertResidueCode(
resName=new_label[:3])
sequence += code.upper()
else:
code, resName = lib.convertResidueCode(
resName=residue.resName)
sequence += code.lower()
return sequence
def getDeterminantSection(protein, verbose=False):
"""
prints out the pka-section of the result
"""
# getting the same order as in propka2.0
residue_list = lib.residueList("propka1")
str = "%s\n" % ( getDeterminantsHeader() )
# printing determinants
for chain in protein.chains:
for residue_type in residue_list:
for residue in chain.residues:
if residue.resName == residue_type:
str += "%s\n" % ( residue.getDeterminantString() )
# Add a warning in case of coupled residues
if protein.coupled_residues:
str += "%s\n" % ( getTheLine() )
str += " Residues that are found to be 'coupled', i.e. titrates together, has been marked by '*' in the above\n"
str += " section. Please rerun PropKa with the --display-coupled-residues option for detailed information.\n"
return str
def makeCorrespondingAtomNames():
"""
setting up a dictionary to define 'corresponding atoms' between two residues for 'overlap'
"""
# getting list of all atoms
resNames = residueList("standard")
names = {}
# ----- back-bone & 'CB' section -----
# simplifying the setup by including back-bone and 'CB' with this loop
for resName1 in resNames:
names[resName1] = {}
for resName2 in resNames:
names[resName1][resName2] = [['N', 'N'],
['CA', 'CA'],
['C', 'C'],
['O', 'O']]
if resName1 != "GLY" and resName2 != "GLY":
names[resName1][resName2].append(['CB', 'CB'])
# ----- self-overlap section -----
# setting up all atoms for self-comparison
for resName in resNames:
atmNames = atomList(resName)
for atmName in atmNames:
if atmName not in ['N', 'CA', 'CB', 'C', 'O']:
names[resName][resName].append([atmName, atmName])
# ----- side-chain section -----
# side-chains left to consider (sorted alphabetically):
# ['ARG', 'ASN', 'ASP', 'CYS', 'GLN', 'GLU', 'HIS', 'ILE', 'LEU', 'LYS', 'MET', 'PHE', 'PRO', 'SER', 'THR', 'TRP', 'TYR', 'VAL']
# ARG
# None
# ASN
str1 = "ASN CG"
str2 = "ARG CG"
extendCorrespondingAtomsDictionary(names, str1, str2)
# ASP
str1 = "ASP CG"
str2 = "ARG CG"
extendCorrespondingAtomsDictionary(names, str1, str2)
str1 = "ASP OD1 OD2"
str2 = "ASN OD1 ND2"
extendCorrespondingAtomsDictionary(names, str1, str2)
# CYS
# None
# GLN
str1 = "GLN CG CD"
str2 = "ARG CG CD"
extendCorrespondingAtomsDictionary(names, str1, str2)
str1 = "GLN CG"
str2 = "ASN CG"
extendCorrespondingAtomsDictionary(names, str1, str2)
str1 = "GLN CG"
str2 = "ASP CG"
extendCorrespondingAtomsDictionary(names, str1, str2)
# GLU
# HIS
# ILE
# LEU
# LYS
# MET
# PHE
# PRO
# SER
# THR
# TRP
# TYR
str1 = "TYR CG"
str2 = "LYS CG"
extendCorrespondingAtomsDictionary(names, str1, str2)
# VAL
return names
def makeCorrespondingAtomNames():
"""
setting up a dictionary to define 'corresponding atoms' between two residues for 'overlap'
"""
# getting list of all atoms
resNames = residueList("standard")
names = {}
# ----- back-bone & 'CB' section -----
# simplifying the setup by including back-bone and 'CB' with this loop
for resName1 in resNames:
names[resName1] = {}
for resName2 in resNames:
names[resName1][resName2] = [['N', 'N'], ['CA', 'CA'], ['C', 'C'],
['O', 'O']]
if resName1 != "GLY" and resName2 != "GLY":
names[resName1][resName2].append(['CB', 'CB'])
# ----- self-overlap section -----
# setting up all atoms for self-comparison
for resName in resNames:
atmNames = atomList(resName)
for atmName in atmNames:
if atmName not in ['N', 'CA', 'CB', 'C', 'O']:
names[resName][resName].append([atmName, atmName])
# ----- side-chain section -----
# side-chains left to consider (sorted alphabetically):
# ['ARG', 'ASN', 'ASP', 'CYS', 'GLN', 'GLU', 'HIS', 'ILE', 'LEU', 'LYS', 'MET', 'PHE', 'PRO', 'SER', 'THR', 'TRP', 'TYR', 'VAL']
# ARG
# None
# ASN
str1 = "ASN CG"
str2 = "ARG CG"
extendCorrespondingAtomsDictionary(names, str1, str2)
# ASP
str1 = "ASP CG"
str2 = "ARG CG"
extendCorrespondingAtomsDictionary(names, str1, str2)
str1 = "ASP OD1 OD2"
str2 = "ASN OD1 ND2"
extendCorrespondingAtomsDictionary(names, str1, str2)
# CYS
# None
# GLN
str1 = "GLN CG CD"
str2 = "ARG CG CD"
extendCorrespondingAtomsDictionary(names, str1, str2)
str1 = "GLN CG"
str2 = "ASN CG"
extendCorrespondingAtomsDictionary(names, str1, str2)
str1 = "GLN CG"
str2 = "ASP CG"
extendCorrespondingAtomsDictionary(names, str1, str2)
# GLU
# HIS
# ILE
# LEU
# LYS
# MET
# PHE
# PRO
# SER
# THR
# TRP
# TYR
str1 = "TYR CG"
str2 = "LYS CG"
extendCorrespondingAtomsDictionary(names, str1, str2)
# VAL
return names
def calculateAveragePKA(self, version=None, options=None):
"""
Calculates the pKa values of each configuration and averages them
"""
# initializing dictionaries for making averages, key = 'residue.label'
pkas = {}
Nmass = {}
Emass = {}
Nlocl = {}
Elocl = {}
determinants = {}
number_of_configurations = len(self.configurations)
# setting up list for 'propka1 pka residues'
pka_residues = []
for resName in lib.residueList("propka1"):
pka_residues.extend(self.residue_dictionary[resName])
# initializing dictionaries for making averages, key = 'configuration label'
for residue in pka_residues:
key = residue.label
pkas[key] = {}
Nmass[key] = {}
Emass[key] = {}
Nlocl[key] = {}
Elocl[key] = {}
# initializing dictionary for making averages, key = 'determinant.label'
determinants[key] = [{}, {}, {}]
# perform pKa calulation on each configuration and add pKa properties to dictionaries
for key in self.configurations:
self.setConfiguration(key=key, options=options)
self.calculateConfigurationPKA(version=version, options=options)
# printing out the pKa section for this configuration
if options.verbose == True:
output.printPKASection(self)
# transferring property to right dictionary
for residue in pka_residues:
residue_key = residue.label
pkas[residue_key][key] = residue.pKa_pro
Nmass[residue_key][key] = residue.Nmass
Emass[residue_key][key] = residue.Emass
Nlocl[residue_key][key] = residue.Nlocl
Elocl[residue_key][key] = residue.Elocl
for type in range(3):
for determinant in residue.determinants[type]:
if determinant.label in determinants[residue_key][type]:
determinants[residue_key][type][determinant.label] += determinant.value
else:
determinants[residue_key][type][determinant.label] = determinant.value
# print each configuration-pKa in nice matrix
residue_list = self.residue_dictionary["ASP"]
residue_list.extend(self.residue_dictionary["GLU"])
str = "%4s" % ("Res#")
for residue in residue_list:
str += "%6d" % (residue.resNumb)
pka_print(str)
index = 0
for key in self.configurations:
str = "%4s:" % (key)
for residue in residue_list:
reskey = residue.label
str += "%6.2lf" % (pkas[reskey][key])
#str += "%6.2lf" % (Emass[reskey][key])
#str += "%6.2lf" % (Elocl[reskey][key])
pka_print(str)
# get the average pKa properties by dividing the sum with number of configurations, len(configuration keys)
from determinants import Determinant
for residue in pka_residues:
residue_key = residue.label
sum_pka = 0.00; sum_Nmass = 0.00; sum_Emass = 0.00; sum_Nlocl = 0.00; sum_Elocl = 0.00
for key in pkas[residue_key].keys():
sum_pka += pkas[residue_key][key]
sum_Nmass += Nmass[residue_key][key]
sum_Emass += Emass[residue_key][key]
sum_Nlocl += Nlocl[residue_key][key]
sum_Elocl += Elocl[residue_key][key]
residue.pKa_pro = sum_pka/len( pkas[residue_key].keys() )
residue.Nmass = sum_Nmass/len( pkas[residue_key].keys() )
residue.Emass = sum_Emass/len( pkas[residue_key].keys() )
residue.Nlocl = sum_Nlocl/len( pkas[residue_key].keys() )
residue.Elocl = sum_Elocl/len( pkas[residue_key].keys() )
residue.determinants = [[], [], []]
for type in range(3):
for key in determinants[residue_key][type].keys():
value = determinants[residue_key][type][key] / len( pkas[residue_key].keys() )
if abs(value) > 0.005: # <-- removing determinant that appears as 0.00
newDeterminant = Determinant(key, value)
residue.determinants[type].append(newDeterminant)
return
def calculateAveragePKA(self, version=None, options=None):
"""
Calculates the pKa values of each configuration and averages them
"""
# initializing dictionaries for making averages, key = 'residue.label'
pkas = {}
Nmass = {}
Emass = {}
Nlocl = {}
Elocl = {}
determinants = {}
number_of_configurations = len(self.configurations)
# setting up list for 'propka1 pka residues'
pka_residues = []
for resName in lib.residueList("propka1"):
pka_residues.extend(self.residue_dictionary[resName])
# initializing dictionaries for making averages, key = 'configuration label'
for residue in pka_residues:
key = residue.label
pkas[key] = {}
Nmass[key] = {}
Emass[key] = {}
Nlocl[key] = {}
Elocl[key] = {}
# initializing dictionary for making averages, key = 'determinant.label'
determinants[key] = [{}, {}, {}]
# perform pKa calulation on each configuration and add pKa properties to dictionaries
for key in self.configurations:
self.setConfiguration(key=key, options=options)
self.calculateConfigurationPKA(version=version, options=options)
# printing out the pKa section for this configuration
if options.verbose == True:
output.printPKASection(self)
# transferring property to right dictionary
for residue in pka_residues:
residue_key = residue.label
pkas[residue_key][key] = residue.pKa_pro
Nmass[residue_key][key] = residue.Nmass
Emass[residue_key][key] = residue.Emass
Nlocl[residue_key][key] = residue.Nlocl
Elocl[residue_key][key] = residue.Elocl
for type in range(3):
for determinant in residue.determinants[type]:
if determinant.label in determinants[residue_key][
type]:
determinants[residue_key][type][
determinant.label] += determinant.value
else:
determinants[residue_key][type][
determinant.label] = determinant.value
# print each configuration-pKa in nice matrix
residue_list = self.residue_dictionary["ASP"]
residue_list.extend(self.residue_dictionary["GLU"])
str = "%4s" % ("Res#")
for residue in residue_list:
str += "%6d" % (residue.resNumb)
pka_print(str)
index = 0
for key in self.configurations:
str = "%4s:" % (key)
for residue in residue_list:
reskey = residue.label
str += "%6.2lf" % (pkas[reskey][key])
#str += "%6.2lf" % (Emass[reskey][key])
#str += "%6.2lf" % (Elocl[reskey][key])
pka_print(str)
# get the average pKa properties by dividing the sum with number of configurations, len(configuration keys)
from determinants import Determinant
for residue in pka_residues:
residue_key = residue.label
sum_pka = 0.00
sum_Nmass = 0.00
sum_Emass = 0.00
sum_Nlocl = 0.00
sum_Elocl = 0.00
for key in pkas[residue_key].keys():
sum_pka += pkas[residue_key][key]
sum_Nmass += Nmass[residue_key][key]
sum_Emass += Emass[residue_key][key]
sum_Nlocl += Nlocl[residue_key][key]
sum_Elocl += Elocl[residue_key][key]
residue.pKa_pro = sum_pka / len(pkas[residue_key].keys())
residue.Nmass = sum_Nmass / len(pkas[residue_key].keys())
residue.Emass = sum_Emass / len(pkas[residue_key].keys())
residue.Nlocl = sum_Nlocl / len(pkas[residue_key].keys())
residue.Elocl = sum_Elocl / len(pkas[residue_key].keys())
residue.determinants = [[], [], []]
for type in range(3):
for key in determinants[residue_key][type].keys():
value = determinants[residue_key][type][key] / len(
pkas[residue_key].keys())
if abs(
value
) > 0.005: # <-- removing determinant that appears as 0.00
newDeterminant = Determinant(key, value)
residue.determinants[type].append(newDeterminant)
return
