On 11/20/2013 02:16 PM, Craig James wrote:

> Does your application require these older designations?  Or could you
> instead use the atom- and bond-centric definitions that are built in to
> OpenBabel?

My applications need to work with mmCIF data model. MmCIF defines
_chem_comp_atom.pdbx_stereo_config as (R, S, N) -- see
http://mmcif.rcsb.org/dictionaries/mmcif_pdbx_v40.dic/Items/_chem_comp_atom.pdbx_stereo_config.html

and _chem_comp_bond.pdbx_stereo_config as (E, Z, N) --
http://mmcif.rcsb.org/dictionaries/mmcif_pdbx_v40.dic/Items/_chem_comp_bond.pdbx_stereo_config.html

Both items are nullable so I don't have to fill them in if the data is
not available. However, if it is obtainable, I want it.

-- 
Dimitri Maziuk
Programmer/sysadmin
BioMagResBank, UW-Madison -- http://www.bmrb.wisc.edu

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