1H0H:
reference: Gene sequence and the 1.8 A crystal structure of the tungsten-containing formate dehydrogenase from Desulfovibrio gigas., Raaijmakers H, Macieira S, Dias JM, Teixeira S, Bursakov S, Huber R, Moura JJ, Moura I, Romao MJ, Structure. 2002 Sep;10(9):1261-72. PMID: 12220497

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