The Enzyme Database

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Accepted name: methylenetetrahydromethanopterin dehydrogenase
Reaction: 5,10-methylenetetrahydromethanopterin + oxidized coenzyme F420 = 5,10-methenyltetrahydromethanopterin + reduced coenzyme F420
For diagram of methane biosynthesis, click here
Other name(s): N5,N10-methylenetetrahydromethanopterin dehydrogenase; 5,10-methylenetetrahydromethanopterin dehydrogenase
Systematic name: 5,10-methylenetetrahydromethanopterin:coenzyme-F420 oxidoreductase
Comments: Coenzyme F420 is a 7,8-didemethyl-8-hydroxy-5-deazariboflavin derivative; methanopterin is a pterin analogue. The enzyme is involved in the formation of methane from CO2 in the methanogen Methanothermobacter thermautotrophicus.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, PDB, UM-BBD, CAS registry number: 100357-01-5
1.  Hartzell, P.L., Zvilius, G., Escalante-Semerena, J.C. and Donnelly, M.I. Coenzyme F420 dependence of the methylenetetrahydromethanopterin dehydrogenase of Methanobacterium thermoautotrophicum. Biochem. Biophys. Res. Commun. 133 (1985) 884–890. [PMID: 4084309]
2.  te Brömmelstroet, B.W., Geerts, W.J., Keltjens, J.T., van der Drift, C. and Vogels, G.D. Purification and properties of 5,10-methylenetetrahydromethanopterin dehydrogenase and 5,10-methylenetetrahydromethanopterin reductase, two coenzyme F420-dependent enzymes, from Methanosarcina barkeri. Biochim. Biophys. Acta 1079 (1991) 293–302. [PMID: 1911853]
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