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Information on EC 2.1.1.90 - methanol-corrinoid protein Co-methyltransferase

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IUBMB Comments
The enzyme, which catalyses the transfer of methyl groups from methanol to a methanol-specific corrinoid protein (MtaC), is involved in methanogenesis from methanol. Methylation of the corrinoid protein requires the central cobalt to be in the Co(I) state. During methylation the cobalt is oxidized to the Co(III) state. Free cob(I)alamin can substitute for the corrinoid protein in vitro . Inactivated by oxygen and other oxidizing agents, and reactivated by catalytic amounts of ATP and hydrogen.
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The enzyme appears in viruses and cellular organisms
Reaction Schemes
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a [Co(I) methanol-specific corrinoid protein]
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a [methyl-Co(III) methanol-specific corrinoid protein]
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Synonyms
methanol cobalamin methyltransferase, methanol-coenzyme M-methyltransferase complex, methanol:5-hydroxy-benzimidazolylcobamide methyltransferase, methanol:5-hydroxybenzimidazolylcobamide methyltransferase, methyltransferase, methanol-cobalamin, MT 1, MT1, MtaB, more
REACTION
REACTION DIAGRAM
COMMENTARY hide
ORGANISM
UNIPROT
LITERATURE
methanol + a [Co(I) methanol-specific corrinoid protein] = a [methyl-Co(III) methanol-specific corrinoid protein] + H2O
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