ID   2.1.1.389
DE   [methyl-Co(III) quaternary-amine-specific corrinoid protein]-
DE   -tetrahydrofolate methyltransferase.
CA   (6S)-5,6,7,8-tetrahydrofolate + methyl-Co(III)-[quaternary-amine-specific
CA   corrinoid protein] = (6S)-5-methyl-5,6,7,8-tetrahydrofolate + Co(I)-
CA   [quaternary-amine-specific corrinoid protein] + H(+).
CC   -!- The enzyme, characterized from the acetogenic gut bacterium
CC       Eubacterium limosum, participates in a pathway for the degradation of
CC       some quaternary amine compounds (L-proline betaine and L-carnitine).
CC   -!- The enzyme catalyzes the transfer of a methyl group bound to the
CC       cobalt cofactor of a dedicated corrinoid protein (bacterial MtqC) to
CC       tetrahydrofolate.
CC   -!- The resulting 5-methyltetrahydrofolate is processed to acetyl-CoA via
CC       the Wood--Ljungdahl pathway.
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