def testMolWt(self):
mol = Chem.MolFromSmiles("C")
amw = rdMD._CalcMolWt(mol)
self.assertTrue(feq(amw, 16.043, .001))
amw = rdMD._CalcMolWt(mol, True)
self.assertTrue(feq(amw, 12.011, .001))
mol2 = Chem.AddHs(mol)
amw = rdMD._CalcMolWt(mol2)
self.assertTrue(feq(amw, 16.043, .001))
amw = rdMD._CalcMolWt(mol2, True)
self.assertTrue(feq(amw, 12.011, .001))
mol = Chem.MolFromSmiles("C")
amw = rdMD.CalcExactMolWt(mol)
self.assertTrue(feq(amw, 16.031, .001))
def testMolWt(self):
mol = Chem.MolFromSmiles("C");
amw = rdMD._CalcMolWt(mol);
self.failUnless(feq(amw,16.043,.001));
amw = rdMD._CalcMolWt(mol,True);
self.failUnless(feq(amw,12.011,.001));
mol2 = Chem.AddHs(mol);
amw = rdMD._CalcMolWt(mol2);
self.failUnless(feq(amw,16.043,.001));
amw = rdMD._CalcMolWt(mol2,True);
self.failUnless(feq(amw,12.011,.001));
mol = Chem.MolFromSmiles("C");
amw = rdMD.CalcExactMolWt(mol);
self.failUnless(feq(amw,16.031,.001));
def testMolWt(self):
mol = Chem.MolFromSmiles("C")
amw = rdMD._CalcMolWt(mol)
self.assertTrue(feq(amw, 16.043, .001))
amw = rdMD._CalcMolWt(mol, True)
self.assertTrue(feq(amw, 12.011, .001))
mol2 = Chem.AddHs(mol)
amw = rdMD._CalcMolWt(mol2)
self.assertTrue(feq(amw, 16.043, .001))
amw = rdMD._CalcMolWt(mol2, True)
self.assertTrue(feq(amw, 12.011, .001))
mol = Chem.MolFromSmiles("C")
amw = rdMD.CalcExactMolWt(mol)
self.assertTrue(feq(amw, 16.031, .001))
def calc(smi, name):
m = Chem.MolFromSmiles(smi)
if m is not None:
try:
hba = rdMolDescriptors.CalcNumHBA(m)
hbd = rdMolDescriptors.CalcNumHBD(m)
nrings = rdMolDescriptors.CalcNumRings(m)
rtb = rdMolDescriptors.CalcNumRotatableBonds(m)
psa = rdMolDescriptors.CalcTPSA(m)
logp, mr = rdMolDescriptors.CalcCrippenDescriptors(m)
mw = rdMolDescriptors._CalcMolWt(m)
csp3 = rdMolDescriptors.CalcFractionCSP3(m)
hac = m.GetNumHeavyAtoms()
if hac == 0:
fmf = 0
else:
fmf = GetScaffoldForMol(m).GetNumHeavyAtoms() / hac
qed = QED.qed(m)
nrings_fused = fused_ring_count(m)
return name, hba, hbd, hba + hbd, nrings, rtb, round(psa, 2), round(logp, 2), round(mr, 2), round(mw, 2), \
round(csp3, 3), round(fmf, 3), round(qed, 3), hac, nrings_fused
except:
sys.stderr.write(
f'molecule {name} was omitted due to an error in calculation of some descriptors\n'
)
return None
else:
sys.stderr.write('smiles %s cannot be parsed (%s)' % (smi, name))
return None
def properties(mol):
"""
Calculates the properties that are required to calculate the QED descriptor.
"""
if mol is None:
raise ValueError('You need to provide a mol argument.')
mol = Chem.RemoveHs(mol)
qedProperties = QEDproperties(
MW=rdmd._CalcMolWt(mol),
ALOGP=Crippen.MolLogP(mol),
HBA=sum(
len(mol.GetSubstructMatches(pattern)) for pattern in Acceptors
if mol.HasSubstructMatch(pattern)),
HBD=rdmd.CalcNumHBD(mol),
PSA=MolSurf.TPSA(mol),
ROTB=rdmd.CalcNumRotatableBonds(mol,
rdmd.NumRotatableBondsOptions.Strict),
AROM=Chem.GetSSSR(Chem.DeleteSubstructs(Chem.Mol(mol),
AliphaticRings)),
ALERTS=sum(1 for alert in StructuralAlerts
if mol.HasSubstructMatch(alert)),
)
# The replacement
# AROM=Lipinski.NumAromaticRings(mol),
# is not identical. The expression above tends to count more rings
# N1C2=CC=CC=C2SC3=C1C=CC4=C3C=CC=C4
# OC1=C(O)C=C2C(=C1)OC3=CC(=O)C(=CC3=C2C4=CC=CC=C4)O
# CC(C)C1=CC2=C(C)C=CC2=C(C)C=C1 uses 2, should be 0 ?
return qedProperties
def properties(mol):
"""
Calculates the properties that are required to calculate the QED descriptor.
"""
if mol is None:
raise ValueError('You need to provide a mol argument.')
mol = Chem.RemoveHs(mol)
qedProperties = QEDproperties(
MW=rdmd._CalcMolWt(mol),
ALOGP=Crippen.MolLogP(mol),
HBA=sum(len(mol.GetSubstructMatches(pattern)) for pattern in Acceptors
if mol.HasSubstructMatch(pattern)),
HBD=rdmd.CalcNumHBD(mol),
PSA=MolSurf.TPSA(mol),
ROTB=rdmd.CalcNumRotatableBonds(mol, rdmd.NumRotatableBondsOptions.Strict),
AROM=Chem.GetSSSR(Chem.DeleteSubstructs(Chem.Mol(mol), AliphaticRings)),
ALERTS=sum(1 for alert in StructuralAlerts if mol.HasSubstructMatch(alert)),
)
# The replacement
# AROM=Lipinski.NumAromaticRings(mol),
# is not identical. The expression above tends to count more rings
# N1C2=CC=CC=C2SC3=C1C=CC4=C3C=CC=C4
# OC1=C(O)C=C2C(=C1)OC3=CC(=O)C(=CC3=C2C4=CC=CC=C4)O
# CC(C)C1=CC2=C(C)C=CC2=C(C)C=C1 uses 2, should be 0 ?
return qedProperties
def main():
sub_df = pd.read_csv("submissions_final_result.csv")
cmp_ds = []
for _, row in sub_df.iterrows():
cmp_dict = {}
mol = Chem.MolFromSmiles(row['smiles_string'])
cmp_dict['submission_id'] = row['submission_id']
cmp_dict['smiles_string'] = row['smiles_string']
# Lipinski's rule
cmp_dict['h_bond_donor'] = rd.CalcNumLipinskiHBD(
mol) # Lipinski Hbond donor
cmp_dict['h_bond_acceptor'] = rd.CalcNumLipinskiHBA(
mol) # Lipinski Hbond acceptor
cmp_dict['moluclar_mass'] = rd._CalcMolWt(mol) # Molecular Weight
cmp_dict['log_p'] = rd.CalcCrippenDescriptors(mol)[
0] # Partition coefficient
# Topological polar surface area
cmp_dict['topological_polar_surface_area'] = rd.CalcTPSA(mol)
cmp_ds.append(cmp_dict)
result = pd.merge(sub_df,
pd.DataFrame(cmp_ds),
on=['submission_id', 'smiles_string'])
result.to_csv("lipinski_psa_result.csv", index=False, encoding='utf-8')
def calc(smi, name):
m = Chem.MolFromSmiles(smi)
if m is not None:
try:
hba = rdMolDescriptors.CalcNumHBA(m)
hbd = rdMolDescriptors.CalcNumHBD(m)
nrings = rdMolDescriptors.CalcNumRings(m)
rtb = rdMolDescriptors.CalcNumRotatableBonds(m)
psa = rdMolDescriptors.CalcTPSA(m)
logp, mr = rdMolDescriptors.CalcCrippenDescriptors(m)
mw = rdMolDescriptors._CalcMolWt(m)
csp3 = rdMolDescriptors.CalcFractionCSP3(m)
hac = m.GetNumHeavyAtoms()
if hac == 0:
fmf = 0
else:
fmf = GetScaffoldForMol(m).GetNumHeavyAtoms() / hac
qed = QED.qed(m)
nrings_fused = fused_ring_count(m)
n_unique_hba_hbd_atoms = count_hbd_hba_atoms(m)
max_ring_size = len(max(m.GetRingInfo().AtomRings(), key=len, default=()))
n_chiral_centers = len(FindMolChiralCenters(m, includeUnassigned=True))
fcsp3_bm = rdMolDescriptors.CalcFractionCSP3(GetScaffoldForMol(m))
return name, hba, hbd, hba + hbd, nrings, rtb, round(psa, 2), round(logp, 2), round(mr, 2), round(mw, 2), \
round(csp3, 3), round(fmf, 3), round(qed, 3), hac, nrings_fused, n_unique_hba_hbd_atoms, \
max_ring_size, n_chiral_centers, round(fcsp3_bm, 3)
except:
sys.stderr.write(f'molecule {name} was omitted due to an error in calculation of some descriptors\n')
return None
else:
sys.stderr.write('smiles %s cannot be parsed (%s)' % (smi, name))
return None
def compute_descs_rdkit(mol):
# We can always add more later on
# noinspection PyProtectedMember
MW = rdMolDescriptors._CalcMolWt(mol)
HBA = rdMolDescriptors.CalcNumHBA(mol)
HBD = rdMolDescriptors.CalcNumHBD(mol)
TPSA = rdMolDescriptors.CalcTPSA(mol)
aromatic_rings = rdMolDescriptors.CalcNumAromaticRings(mol)
nb_heteroatoms = rdMolDescriptors.CalcNumHeteroatoms(mol)
nb_rot_bonds = rdMolDescriptors.CalcNumRotatableBonds(mol)
return MW, HBA, HBD, TPSA, aromatic_rings, nb_heteroatoms, nb_rot_bonds
def main(in_file, output):
Cmpds = {}
InMols = rdkit_open([in_file])
print('\n # Number of input molecule: {0}'.format(len(InMols)))
for mol in InMols:
m = {}
name = mol.GetProp('_Name').split()[0]
m['Name'] = name
m['Formula'] = rd.CalcMolFormula(mol)
m['SMILES'] = Chem.MolToSmiles(mol)
m['MW'] = rd._CalcMolWt(mol) # Molecular Weight
m['logP'] = rd.CalcCrippenDescriptors(mol)[0] # Partition coefficient
m['HDon'] = rd.CalcNumLipinskiHBD(mol) # Lipinski Hbond donor
m['HAcc'] = rd.CalcNumLipinskiHBA(mol) # Lipinski Hbond acceptor
m['TPSA'] = rd.CalcTPSA(mol) # Topological polar surface area
m['Rotat'] = rd.CalcNumRotatableBonds(mol, strict=True) # Rotatable bond
m['MolRef'] = rd.CalcCrippenDescriptors(mol)[1] # Molar refractivity
m['AliRing'] = rd.CalcNumAliphaticRings(mol) # Aliphatic ring number
m['AroRing'] = rd.CalcNumAromaticRings(mol) # Aromatic ring number
# m['Stereo'] = rd.CalcNumAtomStereoCenters(mol) # Stereo center number
# m['UnspStereo'] = rd.CalcNumUnspecifiedAtomStereoCenters(mol) # unspecified stereo
m['SMILES'] = Chem.MolToSmiles(mol,
isomericSmiles=True, allHsExplicit=False)
Cmpds[name] = m
####################################
df = pd.DataFrame.from_dict(Cmpds, orient='index')
df.index.name = 'Name'
# Columns of data to print out
Columns = [ 'Formula',
'MW', 'logP', 'HDon', 'HAcc', 'TPSA',
'Rotat', 'MolRef', 'AliRing', 'AroRing',
#'Stereo', 'UnspStereo',
'SMILES', ]
reorder = df[Columns]
# Output to CSV
reorder.to_csv( output+'.csv', sep=',', na_rep='NA', encoding='utf-8',
float_format='%.5f', header=True )
# Output to Excel
reorder.to_excel( output+'.xlsx', header=True, na_rep='NA' )
def calc(smi, name):
m = Chem.MolFromSmiles(smi)
if m is not None:
hba = rdMolDescriptors.CalcNumHBA(m)
hbd = rdMolDescriptors.CalcNumHBD(m)
nrings = rdMolDescriptors.CalcNumRings(m)
rtb = rdMolDescriptors.CalcNumRotatableBonds(m)
psa = rdMolDescriptors.CalcTPSA(m)
logp, mr = rdMolDescriptors.CalcCrippenDescriptors(m)
mw = rdMolDescriptors._CalcMolWt(m)
csp3 = rdMolDescriptors.CalcFractionCSP3(m)
fmf = GetScaffoldForMol(m).GetNumAtoms(onlyHeavy=True) / m.GetNumAtoms(onlyHeavy=True)
return name, hba, hbd, hba + hbd, nrings, rtb, round(psa, 2), round(logp, 2), round(mr, 2), round(mw, 2), \
round(csp3, 3), round(fmf, 3)
else:
sys.stderr.write('smiles %s cannot be parsed (%s)' % (smi, name))
return None
def filter_druglikeness_5_rules(self, smiles):
count = 0
for i in smiles:
mol = Chem.MolFromSmiles(i)
mol = Chem.RemoveHs(mol)
MW = rdmd._CalcMolWt(mol)
ALOGP = Crippen.MolLogP(mol)
HBA = rdmd.CalcNumHBA(mol)
HBD = rdmd.CalcNumHBD(mol)
PSA = MolSurf.TPSA(mol)
ROTB = rdmd.CalcNumRotatableBonds(
mol, rdmd.NumRotatableBondsOptions.Strict)
if MW > 600 or ALOGP > 6 or ALOGP < 0 or HBA > 11 or HBD > 7 or PSA > 180 or ROTB > 11:
smiles.remove(i)
count = count + 1
print("unavaliable rule_5_drug:%i" % count)
return smiles
def calculate_properties(self, smiles=None, mol=None, props=[]):
"""this method calculates basic properties for the mol
returns : error (bool)"""
if len(props) == 0:
return True
if mol is None:
mol = Chem.MolFromSmiles(smiles)
if mol is None:
return True
if 'py_formula' in props:
self.data['py_formula'] = desc.CalcMolFormula(mol)
if 'py_em' in props:
self.data['py_em'] = round(desc.CalcExactMolWt(mol), 5)
if 'py_n_Cl_Br' in props:
all_atoms = []
for atom in mol.GetAtoms():
all_atoms.append(atom.GetSymbol())
n_Cl = all_atoms.count('Cl')
n_Br = all_atoms.count('Br')
self.data['py_n_Cl_Br'] = n_Cl + n_Br
if 'py_na' in props:
self.data['py_na'] = mol.GetNumAtoms()
if 'py_mw' in props:
self.data['py_mw'] = desc._CalcMolWt(mol)
if 'py_fsp3' in props:
self.data['py_fsp3'] = desc.CalcFractionCSP3(mol)
if 'py_rb' in props:
self.data['py_rb'] = desc.CalcNumRotatableBonds(mol)
if 'py_tpsa' in props:
self.data['py_tpsa'] = desc.CalcTPSA(mol)
if 'py_clogp' in props:
self.data['py_clogp'] = desc.CalcCrippenDescriptors(mol)[0]
if 'py_nar' in props:
self.data['py_nar'] = desc.CalcNumAromaticRings(mol)
if 'py_nhba' in props:
self.data['py_nhba'] = desc.CalcNumHBA(mol)
if 'py_nhbd' in props:
self.data['py_nhbd'] = desc.CalcNumHBD(mol)
return False
def properties(mol):
"""
Calculates the properties that are required to calculate the QED descriptor.
"""
matches = []
if (mol is None):
raise TypeError('You need to provide a mol argument.')
x = [0] * 8
x[0] = rdmd._CalcMolWt(mol) # MW
x[1] = Crippen.MolLogP(mol) # ALOGP
for hbaPattern in Acceptors: # HBA
if (mol.HasSubstructMatch(hbaPattern)):
matches = mol.GetSubstructMatches(hbaPattern)
x[2] += len(matches)
x[3] = Lipinski.NumHDonors(mol) # HBD
x[4] = MolSurf.TPSA(mol) # PSA
x[5] = Lipinski.NumRotatableBonds(mol) # ROTB
x[6] = Chem.GetSSSR(Chem.DeleteSubstructs(deepcopy(mol),
AliphaticRings)) # AROM
for alert in StructuralAlerts: # ALERTS
if (mol.HasSubstructMatch(alert)): x[7] += 1
return x
for name in tmp:
if name[0] != '_' and name[-1] != '_' and name not in others:
# filter out python reference implementations:
if name[:2] == 'py' and name[2:] in tmp:
continue
if name == 'print_function':
continue
thing = getattr(mod, name)
if _isCallable(thing):
namespace[name] = thing
_descList.append((name, thing))
descList = _descList
MolWt = lambda *x, **y: _rdMolDescriptors._CalcMolWt(*x, **y)
MolWt.version = _rdMolDescriptors._CalcMolWt_version
MolWt.__doc__ = """The average molecular weight of the molecule
>>> MolWt(Chem.MolFromSmiles('CC'))
30.07
>>> MolWt(Chem.MolFromSmiles('[NH4+].[Cl-]'))
53.49...
"""
HeavyAtomMolWt = lambda x: MolWt(x, True)
HeavyAtomMolWt.__doc__ = """The average molecular weight of the molecule ignoring hydrogens
>>> HeavyAtomMolWt(Chem.MolFromSmiles('CC'))
24.02...
for name in tmp:
if name[0] != "_" and name[-1] != "_" and name not in others:
# filter out python reference implementations:
if name[:2] == "py" and name[2:] in tmp:
continue
thing = getattr(mod, name)
if _isCallable(thing):
namespace[name] = thing
_descList.append((name, thing))
descList = _descList
from rdkit.Chem import rdMolDescriptors as _rdMolDescriptors
MolWt = lambda *x, **y: _rdMolDescriptors._CalcMolWt(*x, **y)
MolWt.version = _rdMolDescriptors._CalcMolWt_version
MolWt.__doc__ = """The average molecular weight of the molecule
>>> MolWt(Chem.MolFromSmiles('CC'))
30.07
>>> MolWt(Chem.MolFromSmiles('[NH4+].[Cl-]'))
53.49...
"""
HeavyAtomMolWt = lambda x: MolWt(x, True)
HeavyAtomMolWt.__doc__ = """The average molecular weight of the molecule ignoring hydrogens
>>> HeavyAtomMolWt(Chem.MolFromSmiles('CC'))
24.02...
def calc_molecular_weight(sm):
sm = sm.replace("Q", DUMMY_ATOM)
mol = Chem.MolFromSmiles(sm)
mw = rdMolDescriptors._CalcMolWt(mol)
mw = mw - DUMMY_ATOM_WEIGHT * sm.count(DUMMY_ATOM)
return mw
from rdkit import Chem
from rdkit.Chem import rdMolDescriptors
import networkx as nx
import re
import copy
from .write_smiles import write_smiles
#***** graph processing funcs ***********
SHARE_PARAMS = ["mw", "mn", "n", "pdi", "d"]
DUMMY_ATOM = "Y"
DUMMY_ATOM_WEIGHT = rdMolDescriptors._CalcMolWt(
Chem.MolFromSmiles("[" + DUMMY_ATOM + "]"))
MAX_ATOMS = 10000
def draw_chem_graph(g):
"""
draw chemicals from networkX object
Parameters
----------
g : networkX object
"""
pos = nx.spring_layout(g)
node_labels = nx.get_node_attributes(g, 'polymer')
nx.draw_networkx_labels(g,
pos,
labels=node_labels,
font_size=10,
if pid != '' and pid not in pubids and row[41].split(
',')[0] in prot_id2idx and row[37] != '':
pubids.append(pid)
# import pdb
# pdb.set_trace()
# print "entered"
proId = row[41].split(',')[0]
if proId not in prot_id2idx:
print proId, pid, row[37]
pd = psc_array[prot_id2idx[proId]]
try:
if (row[9] == '' or row[1] == '' or row[1] is None):
continue
else:
md = Chem.MolFromSmiles(row[1])
if float(row[9]) < 100 and _CalcMolWt(
md) < 1000 and md is not None:
fp1 = convToArr(
AllChem.GetMorganFingerprintAsBitVect(md, 1))
fp2 = convToArr(
AllChem.GetMorganFingerprintAsBitVect(md, 2))
fp3 = convToArr(
AllChem.GetMorganFingerprintAsBitVect(md, 3))
out = pid, proId, fp1.tolist(), fp2.tolist(
), fp3.tolist(), pd.tolist(), 1
writer.writerow(out)
# print "writing done"
countp += 1
elif float(row[9]) > 10000 and _CalcMolWt(
md) < 100 and md is not None:
fp1 = convToArr(
AllChem.GetMorganFingerprintAsBitVect(md, 1))
def calc_MW_from_SMILES_list(SMILES):
mol = Chem.MolFromSmiles(SMILES)
return rdMolDescriptors._CalcMolWt(mol)
