2V45:
reference: Periplasmic nitrate reductase revisited: a sulfur atom completes the sixth coordination of the catalytic molybdenum., Najmudin S, Gonzalez PJ, Trincao J, Coelho C, Mukhopadhyay A, Cerqueira NM, Romao CC, Moura I, Moura JJ, Brondino CD, Romao MJ, J Biol Inorg Chem. 2008 Mar 8;. PMID: 18327621

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