Hi,

    I've been trying to get PyMOL to display a double bond at the position of 
the vinyl in the attached, small-moleculePDB for some time.  The PDB was 
generated by converting a smiles representation of isopentenly diphosphate 
(obtained from PubChem) using Corina.  The number of attached atoms at the 
vinyl group is correct, but PyMOL doesn't display the double bond.  Cycling the 
bond valence produces a single-bond version (with added protons), but stops 
there - it won't cycle through triple, double, single.  Downloaded a PDB of 
fumarate that does display double bonds in response to Set Valence - so, my 
version of PyMOL (1.1beta2, Vista environment) seems fine.

    Thoughts?

    Thanks,

    Tom
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Attachment: isopentenly diphosphate.pse
Description: Binary data

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