This archaeal enzyme catalyses the last step in the biosynthesis of tetrahydromethanopterin, a coenzyme used in methanogenesis. The enzyme, characterized from the archaea Methanosarcina mazei and Methanocaldococcus jannaschii, is an iron-sulfur flavoprotein. cf. EC 18.104.22.168, dihydromethanopterin reductase [NAD(P)+].
Wang, S., Tiongson, J. and Rasche, M.E. Discovery and characterization of the first archaeal dihydromethanopterin reductase, an iron-sulfur flavoprotein from Methanosarcina mazei. J. Bacteriol.196 (2014) 203–209. [DOI] [PMID: 23995635]