The Enzyme Database

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Accepted name: malonyl-S-ACP:biotin-protein carboxyltransferase
Reaction: a malonyl-[acyl-carrier protein] + a biotinyl-[protein] = an acetyl-[acyl-carrier protein] + a carboxybiotinyl-[protein]
For diagram of malonate decarboxylase, click here
Other name(s): malonyl-S-acyl-carrier protein:biotin-protein carboxyltransferase; MadC/MadD; MadC,D; malonyl-[acyl-carrier protein]:biotinyl-[protein] carboxyltransferase
Systematic name: malonyl-[acyl-carrier protein]:biotinyl-[protein] carboxytransferase
Comments: Derived from the components MadC and MadD of the anaerobic bacterium Malonomonas rubra, this enzyme is a component of EC, biotin-dependent malonate decarboxylase. The carboxy group is transferred from malonate to the cofactor of the biotin protein (MadF) with retention of configuration [2]. Similar to EC, malonyl-S-ACP decarboxylase, which forms part of the biotin-independent malonate decarboxylase (EC, this enzyme also follows on from EC, acetyl-S-ACP:malonate ACP transferase, and results in the regeneration of the acetyl-[acyl-carrier protein] [3].
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, PDB
1.  Berg, M., Hilbi, H. and Dimroth, P. Sequence of a gene cluster from Malonomonas rubra encoding components of the malonate decarboxylase Na+ pump and evidence for their function. Eur. J. Biochem. 245 (1997) 103–115. [DOI] [PMID: 9128730]
2.  Micklefield, J., Harris, K.J., Gröger, S., Mocek, U., Hilbi, H., Dimroth, P. and Floss, H.G. Stereochemical course of malonate decarboxylase in Malonomonas rubra has biotin decarboxylation with retention. J. Am. Chem. Soc. 117 (1995) 1153–1154. [DOI]
3.  Dimroth, P. and Hilbi, H. Enzymic and genetic basis for bacterial growth on malonate. Mol. Microbiol. 25 (1997) 3–10. [DOI] [PMID: 11902724]
[EC created 2008, modified 2018]

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