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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 expected taxonomic range for this enzyme is: Archaea, Bacteria
Reaction Schemes
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a [Co(I) methanol-specific corrinoid protein]
=
a [methyl-Co(III) methanol-specific corrinoid protein]
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Synonyms
Cob(I)alamin methyltransferase, methanol cobalamin methyltransferase, methanol-5-hydroxybenzimidazolylcobamide Co-methyltransferase, methanol-coenzyme M-methyltransferase complex, methanol:5-hydroxy-benzimidazolylcobamide methyltransferase, methanol:5-hydroxybenzimidazolylcobamide methyltransferase, methanol:coenzyme M methyltransferase, methanol:CoM methyltransferase complex, methyltransferase, methanol-cobalamin, MMPA:cob(I)alamin methyltransferase, 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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