[BiO BB] how pdb ID is defined?

[Xue Li]

Dear all,

Maybe this is a naive question. I just noticed that proteins 2GSA and
4GSA have similar name and denote almost the same protein.

       4gsa:  CRYSTAL STRUCTURE OF GLUTAMATE-1-SEMIALDEHYDE AMINOMUTASE
(AMINOTRANSFERASE) REDUCED WITH CYANOBOROHYDRATE
       2gsa:  CRYSTAL STRUCTURE OF GLUTAMATE-1-SEMIALDEHYDE
AMINOMUTASE (AMINOTRANSFERASE, WILD-TYPE FORM)

Also, 2ae2 and 1ae1 denote similar proteins.
2ae2: TROPINONE REDUCTASE-II COMPLEXED WITH NADP+ AND PSEUDOTROPINE
1ae1: TROPINONE REDUCTASE-I COMPLEX WITH NADP


Would someone please tell me how PDB ID is defined? Given a list of
pdb ID, can I find biological distance merely based on their pdb IDs?

Thanks a lot.

--
Xue, Li
Bioinformatics and Computational Biology program @ ISU
Ames, IA 50010
515-450-7183