ID 2.1.1.378 DE [methyl-Co(III) glycine betaine-specific corrinoid protein]- DE -tetrahydrofolate methyltransferase. CA methyl-Co(III)-[glycine betaine-specific corrinoid protein] + (6S)- CA 5,6,7,8-tetrahydrofolate = Co(I)-[glycine betaine-specific corrinoid CA protein] + (6S)-5-methyl-5,6,7,8-tetrahydrofolate + H(+). CC -!- This enzyme, characterized from the anaerobic bacterium CC Desulfitobacterium hafniense Y51, catalyzes a similar reaction to CC that of EC 2.1.1.258, but in the opposite direction, transferring a CC methyl group from a methylated corrinoid protein to tetrahydrofolate. CC -!- The corrinoid protein is specifically methylated by EC 2.1.1.376. DR Q24SP6, MTGA_DESHY ; //