1EJ2:
reference: Insights into ligand binding and catalysis of a central step in NAD+ synthesis: structures of Methanobacterium thermoautotrophicum NMN adenylyltransferase complexes., Saridakis V, Christendat D, Kimber MS, Dharamsi A, Edwards AM, Pai EF, J Biol Chem 2001 Mar 9;276(10):7225-32. PMID: 11063748

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