1F9A:
reference: Structure of nicotinamide mononucleotide adenylyltransferase: a key enzyme in NAD(+) biosynthesis., D'Angelo I, Raffaelli N, Dabusti V, Lorenzi T, Magni G, Rizzi M, Structure Fold Des 2000 Sep 15;8(9):993-1004. PMID: 10986466

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