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发表于 2015-5-11 23:54:41
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嗯,有多学习到了一个技巧:)可以看看这个。
PYMOL STEREOCHEMISTRY
PyMOL can label chiral centers; however, due to the recursive and dependent nature of the determination, PyMOL will refuse to label structures with alternate coordinates.
To determine stereochemistry for a structure that has alternate coordinates, you either need to clear the alternate coordinates field in the target object using: alter objName, alt=''
or you need to create a new object from the old object selecting just one set of coordinates per atom. For example, to create a new object called 'newObj' from 'oldObj' using the only those
atoms with no alternate coordinates or those atoms with an alternate coordinate label 'A' one types:
create newObj, oldObj and alt ''+alt 'A'
Similarly, to create an object from just alternate coordinates 'G' one types:
create newObj, oldObj and alt 'G'
PyMOL labels chiral centers using the IUPAC symbols 'R' for rectus, 'S' for sinister, 'r' for pseudoasymmetric rectus and 's' for pseudoasymmetric sinister.
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