3ETH:
reference: Structural analysis of the active site geometry of N(5)-Carboxyaminoimidazole ribonucleotide synthetase from Escherichia coli., Thoden JB, Holden HM, Firestine SM, Biochemistry. 2008 Dec 16;47(50):13346-53. PMID: 19053251

This OCA Structure page
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