| 1YUM: reference: Crystal structure of nicotinic acid mononucleotide adenylyltransferase from Pseudomonas aeruginosa in its Apo and substrate-complexed forms reveals a fully open conformation., Yoon HJ, Kim HL, Mikami B, Suh SW, J Mol Biol 2005 Aug 12;351(2):258-65. PMID: 16009375 |
This OCA 
Structure page
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(documentation).