The Enzyme Database

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EC 2.1.1.272     
Accepted name: cobalt-factor III methyltransferase
Reaction: S-adenosyl-L-methionine + cobalt-factor III + reduced acceptor = S-adenosyl-L-homocysteine + cobalt-precorrin-4 + acceptor
For diagram of anaerobic corrin biosynthesis (part 1), click here
Other name(s): CbiH60 (gene name)
Systematic name: S-adenosyl-L-methionine:cobalt-factor III 17-methyltransferase (ring contracting)
Comments: Isolated from Bacillus megaterium. The enzyme catalyses both methylation at C-17 and ring contraction. Contains a [4Fe-4S] cluster. It can also convert cobalt-precorrin-3 to cobalt-precorrin-4. The reductant may be thioredoxin.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc
References:
1.  Moore, S.J., Biedendieck, R., Lawrence, A.D., Deery, E., Howard, M.J., Rigby, S.E. and Warren, M.J. Characterization of the enzyme CbiH60 involved in anaerobic ring contraction of the cobalamin (vitamin B12) biosynthetic pathway. J. Biol. Chem. 288 (2013) 297–305. [PMID: 23155054]
[EC 2.1.1.272 created 2013]
 
 


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