Enzymes
| UniProtKB help_outline | 1 proteins |
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- Name help_outline 5,10-methylenetetrahydromethanopterin Identifier CHEBI:57818 Charge -3 Formula C31H42N6O16P InChIKeyhelp_outline GBMIGEWJAPFSQI-CAFBYHECSA-K SMILEShelp_outline [H][C@]12[C@H](C)Nc3nc(N)[nH]c(=O)c3N1CN([C@@H]2C)c1ccc(C[C@H](O)[C@H](O)[C@H](O)CO[C@H]2O[C@H](COP([O-])(=O)O[C@@H](CCC([O-])=O)C([O-])=O)[C@@H](O)[C@H]2O)cc1 2D coordinates Mol file for the small molecule Search links Involved in 7 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline H+ Identifier CHEBI:15378 Charge 1 Formula H InChIKeyhelp_outline GPRLSGONYQIRFK-UHFFFAOYSA-N SMILEShelp_outline [H+] 2D coordinates Mol file for the small molecule Search links Involved in 9,431 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
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Name help_outline
coenzyme F420-(γ-Glu)n
Identifier
CHEBI:133980
Charge
Formula
(C5H6NO3)n.C19H19N3O12P
Search links
Involved in 17 reaction(s)
Find proteins in UniProtKB for this molecule
Form(s) in this reaction:
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Identifier: RHEA-COMP:12939Polymer name: oxidized coenzyme F420-(γ-L-Glu)(n)Polymerization index help_outline nFormula C19H19N3O12P(C5H6NO3)nCharge (-3)(-1)nMol File for the polymer
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- Name help_outline 5,10-methenyl-5,6,7,8-tetrahydromethanopterin Identifier CHEBI:58337 Charge -2 Formula C31H41N6O16P InChIKeyhelp_outline RANKJVUGLXUXOL-CAFBYHECSA-L SMILEShelp_outline [H][C@]12[C@H](C)Nc3nc(N)[nH]c(=O)c3[N+]1=CN([C@@H]2C)c1ccc(C[C@H](O)[C@H](O)[C@H](O)CO[C@H]2O[C@H](COP([O-])(=O)O[C@@H](CCC([O-])=O)C([O-])=O)[C@@H](O)[C@H]2O)cc1 2D coordinates Mol file for the small molecule Search links Involved in 5 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
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Name help_outline
reduced coenzyme F420-(γ-Glu)n
Identifier
CHEBI:139511
Charge
-3
Formula
(C5H6NO3)n.C19H22N3O12P
Search links
Involved in 16 reaction(s)
Find proteins in UniProtKB for this molecule
Form(s) in this reaction:
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Identifier: RHEA-COMP:14378Polymer name: reduced coenzyme F420-(γ-L-Glu)(n)Polymerization index help_outline nFormula C19H22N3O12P(C5H6NO3)nCharge (-2)(-1)nMol File for the polymer
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Cross-references
| RHEA:16721 | RHEA:16722 | RHEA:16723 | RHEA:16724 | |
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| Reaction direction help_outline | undefined | left-to-right | right-to-left | bidirectional |
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| MetaCyc help_outline |
Publications
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Purification and properties of 5,10-methylenetetrahydromethanopterin dehydrogenase and 5,10-methylenetetrahydromethanopterin reductase, two coenzyme F420-dependent enzymes, from Methanosarcina barkeri.
te Brommelstroet B.W., Geerts W.J., Keltjens J.T., van der Drift C., Vogels G.D.
5,10-Methylenetetrahydromethanopterin dehydrogenase and 5,10-methylenetetrahydromethanopterin reductase have been purified to homogeneity by a factor of 86 and 68, respectively, from methanol-grown Methanosarcina barkeri cells. The dehydrogenase was isolated as a hexamer of a single 35 kDa subunit ... >> More
5,10-Methylenetetrahydromethanopterin dehydrogenase and 5,10-methylenetetrahydromethanopterin reductase have been purified to homogeneity by a factor of 86 and 68, respectively, from methanol-grown Methanosarcina barkeri cells. The dehydrogenase was isolated as a hexamer of a single 35 kDa subunit, whereas the reductase was composed of four identical 38 kDa subunits. The purified oxygen-stable enzymes catalyzed the oxidation of 5,10-methylenetetrahydromethanopterin and methyltetrahydromethanopterin with Vmax values of 3000 and 200 mumol min-1 mg-1, respectively. The methanogenic electron carrier coenzyme F420 was a specific electron acceptor for both enzymes. Steady state kinetics for the two enzymes were in agreement with ternary complex (sequential) mechanisms. Methylene reductase and methylene dehydrogenase are proposed to function in the methanol oxidation step to CO2. << Less
Biochim Biophys Acta 1079:293-302(1991) [PubMed] [EuropePMC]
This publication is cited by 1 other entry.
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Coenzyme F420 dependence of the methylenetetrahydromethanopterin dehydrogenase of Methanobacterium thermoautotrophicum.
Hartzell P.L., Zvilius G., Escalante-Semerena J.C., Donnelly M.I.
To identify the electron acceptor of the methylenetetrahydromethanopterin dehydrogenase of Methanobacterium thermoautotrophicum, we have purified the enzyme to homogeneity. The purified enzyme is absolutely dependent on coenzyme F420 (a 7,8-didemethyl-8-hydroxy-5-deazariboflavin derivative) for ac ... >> More
To identify the electron acceptor of the methylenetetrahydromethanopterin dehydrogenase of Methanobacterium thermoautotrophicum, we have purified the enzyme to homogeneity. The purified enzyme is absolutely dependent on coenzyme F420 (a 7,8-didemethyl-8-hydroxy-5-deazariboflavin derivative) for activity. Several alternative electron acceptors are ineffectual in the reaction. Changes in the absorption spectra of reaction mixtures indicate that 1.1 mol of coenzyme F420 is reduced per mol of substrate oxidized. The reaction is reversible and the equilibrium favors oxidation of methylenetetrahydromethanopterin. << Less
Biochem Biophys Res Commun 133:884-890(1985) [PubMed] [EuropePMC]