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Python AllChem.MolFragmentToSmiles方法代码示例

本文整理汇总了Python中rdkit.Chem.AllChem.MolFragmentToSmiles方法的典型用法代码示例。如果您正苦于以下问题:Python AllChem.MolFragmentToSmiles方法的具体用法?Python AllChem.MolFragmentToSmiles怎么用?Python AllChem.MolFragmentToSmiles使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在rdkit.Chem.AllChem的用法示例。


在下文中一共展示了AllChem.MolFragmentToSmiles方法的4个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的Python代码示例。

示例1: computesubgraphsmarts

# 需要导入模块: from rdkit.Chem import AllChem [as 别名]
# 或者: from rdkit.Chem.AllChem import MolFragmentToSmiles [as 别名]
def computesubgraphsmarts(mol, size):
    '''Given an rdkit mol, extract all the paths up to length size (if zero,
    use default length).  Return smarts expressions for these paths.'''
    if size <= 0: size = 6 #default to 6 bonds
    #find all paths of various sizes
    paths = Chem.FindAllSubgraphsOfLengthMToN(mol,1,size)
    #paths is a list of lists, each of which is the bond indices for paths of a different length
    paths = [path for subpath in paths for path in subpath]
    ret = set()
    for path in paths:
        atoms=set()
        for bidx in path:
            atoms.add(mol.GetBondWithIdx(bidx).GetBeginAtomIdx())
            atoms.add(mol.GetBondWithIdx(bidx).GetEndAtomIdx())
        smi = Chem.MolFragmentToSmiles(mol, atoms, canonical=True, allBondsExplicit=True)
        ret.add(smi)
    return ret 
开发者ID:dkoes,项目名称:qsar-tools,代码行数:19,代码来源:createsmartsdescriptors.py

示例2: computepathsmarts

# 需要导入模块: from rdkit.Chem import AllChem [as 别名]
# 或者: from rdkit.Chem.AllChem import MolFragmentToSmiles [as 别名]
def computepathsmarts(mol, size):
    if size <= 0: size = 7 # default to 7 atoms
    ret = set()
    for length in range(2,size+1):
        paths = Chem.FindAllPathsOfLengthN(mol, length, useBonds=False)
        for path in paths:
            smi = Chem.MolFragmentToSmiles(mol, path, canonical=True, allBondsExplicit=True)
            ret.add(smi)
    return ret 
开发者ID:dkoes,项目名称:qsar-tools,代码行数:11,代码来源:createsmartsdescriptors.py

示例3: computecircularsmarts

# 需要导入模块: from rdkit.Chem import AllChem [as 别名]
# 或者: from rdkit.Chem.AllChem import MolFragmentToSmiles [as 别名]
def computecircularsmarts(mol, size):
    '''Given an rdkit mol, extract all the circular type descriptors up to 
    radius size (if zero, use default length).  Return smarts expressions for these fragments.'''
    if size <= 0: size = 2
    ret = set()
    for a in mol.GetAtoms():
        for r in range(1,size+1):
            env = Chem.FindAtomEnvironmentOfRadiusN(mol,r,a.GetIdx())
            atoms=set()
            for bidx in env:
                atoms.add(mol.GetBondWithIdx(bidx).GetBeginAtomIdx())
                atoms.add(mol.GetBondWithIdx(bidx).GetEndAtomIdx())
            smi = Chem.MolFragmentToSmiles(mol, atoms, canonical=True, allBondsExplicit=True)
            ret.add(smi)
    return ret 
开发者ID:dkoes,项目名称:qsar-tools,代码行数:17,代码来源:createsmartsdescriptors.py

示例4: get_frag_around_tetrahedral_center

# 需要导入模块: from rdkit.Chem import AllChem [as 别名]
# 或者: from rdkit.Chem.AllChem import MolFragmentToSmiles [as 别名]
def get_frag_around_tetrahedral_center(mol, idx):
    '''Builds a MolFragment using neighbors of a tetrahedral atom,
    where the molecule has already been updated to include isotopes'''
    ids_to_include = [idx]
    for neighbor in mol.GetAtomWithIdx(idx).GetNeighbors():
        ids_to_include.append(neighbor.GetIdx())
    symbols = ['[{}{}]'.format(a.GetIsotope(), a.GetSymbol()) if a.GetIsotope() != 0\
               else '[#{}]'.format(a.GetAtomicNum()) for a in mol.GetAtoms()]
    return Chem.MolFragmentToSmiles(mol, ids_to_include, isomericSmiles=True,
                                   atomSymbols=symbols, allBondsExplicit=True,
                                   allHsExplicit=True) 
开发者ID:Hanjun-Dai,项目名称:GLN,代码行数:13,代码来源:template_extractor.py


注:本文中的rdkit.Chem.AllChem.MolFragmentToSmiles方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。