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* in other cases get `WARNING: Omitted undefined stereo` from RDKit. So most other problems with chirality - would expect the first 14 characters of the inchikeys to match. This is true to 009 ATP GLC GLU MAN SAC SEH
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* CMO, NAD and HEM has complete mismatch
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* for CMO (carbon monoxide) the likely problem is that do not process the charges smiles is `[C-]#[O+]`
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* HEM (heme) I think the CCD definition is wrong and pubchem defined it correctly
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* NAD: not sure what the problem is.
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* HEM (heme) I think the CCD definition is wrong and pubchem defines it correctly https://pubchem.ncbi.nlm.nih.gov/compound/444098 with Fe2+ and the two nitrogen atoms as N-
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* NAD: in the test my rdkit got :pen_fountain:
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* Sameer's prototype code [sameer_prototype_chem.py](https://gitlab.com/pdbe/ccd_utils/blob/master/sameer_prototype_chem.py) has procedure for setting chirality from the chem_comp_atom.pdbx_stereo_config value
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* *27 May 2017*:
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* Try the procedure from [sameer_prototype_chem.py](https://gitlab.com/pdbe/ccd_utils/blob/master/sameer_prototype_chem.py) commit :pen_fountain: |