I wrote something a while ago the finds an unused code.
% elbow.get_new_ligand_code
Unique ligand code : 7V8
% elbow.get_new_ligand_code A
Unique ligand code : A6E
Cheers
Nigel
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Nigel W. Moriarty
Building 64R0246B, Physical Biosciences Division
Lawrence Berkeley National Laboratory
Neat! It's true the PDB will choose a unique code for you,
but they will use what you supply if it is already unique,
and it is nice to be able to choose something that can help
you remember what it stands for.
Gone are the days when we could choose meaningfull pdb ID's
(like 1PRC, 2PRC, 3PRC etc
