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precorrin-6Y C5,15-methyltransferase (decarboxylating), CbiT subunit This model recognizes the CbiT methylase which is responsible, in part (along with CbiE), for methylating precorrin-6y (or cobalt-precorrin-6y) at both the 5 and 15 positions as well as the concomitant decarbozylation at C-12. In many organisms, this protein is fused to the CbiE subunit. The fused protein, when found in organisms catalyzing the oxidative version of the cobalamin biosynthesis pathway, is called CobL. [Biosynthesis of cofactors, prosthetic groups, and carriers, Heme, porphyrin, and cobalamin]
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Jiyao W et al.(2023). "The conserved domain database in 2023.",