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Information on EC 2.1.1.272 - cobalt-factor III methyltransferase

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EC Tree
     2 Transferases
         2.1 Transferring one-carbon groups
             2.1.1 Methyltransferases
                2.1.1.272 cobalt-factor III methyltransferase
IUBMB Comments
Isolated from the bacterium Bacillus megaterium. The enzyme, which participates in the anaerobic (early cobalt insertion) pathway of adenosylcobalamin biosynthesis, catalyses a crucial reaction where the tetrapyrrole ring contracts as a result of methylation of C-17. Contains a [4Fe-4S] cluster. It can also convert cobalt-precorrin-3 to cobalt-precorrin-4. The reductant may be thioredoxin. See EC 2.1.1.131, precorrin-3B C17-methyltransferase, for the corresponding enzyme that participates in the aerobic cobalamin biosynthesis pathway.
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The expected taxonomic range for this enzyme is: Bacteria, Archaea
Synonyms
CbiH60, Precorrin-3 methylase, more
REACTION
REACTION DIAGRAM
COMMENTARY hide
ORGANISM
UNIPROT
LITERATURE
S-adenosyl-L-methionine + cobalt-factor III + reduced acceptor = S-adenosyl-L-homocysteine + cobalt-precorrin-4 + acceptor
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PATHWAY SOURCE
PATHWAYS
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