The Enzyme Database

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Accepted name: malonyl-[malonate decarboxylase] decarboxylase
Reaction: a malonyl-[holo malonate decarboxylase acyl-carrier protein] = an acetyl-[holo malonate decarboxylase acyl-carrier protein] + CO2
For diagram of malonate decarboxylase, click here
Other name(s): malonyl-S-ACP decarboxylase; malonyl-S-acyl-carrier protein decarboxylase; MdcD/MdcE; MdcD,E; malonyl-[acyl-carrier-protein] carboxy-lyase
Systematic name: malonyl-[holo malonate decarboxylase acyl-carrier protein] carboxy-lyase
Comments: This enzyme comprises the β and γ subunits of EC, biotin-independent malonate decarboxylase but is not present in EC, biotin-dependent malonate decarboxylase. It follows on from EC, acetyl-S-ACP:malonate ACP transferase, and results in the regeneration of the acetylated form of the acyl-carrier-protein subunit of malonate decarboxylase [5]. The carboxy group is lost with retention of configuration [3].
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc
1.  Schmid, M., Berg, M., Hilbi, H. and Dimroth, P. Malonate decarboxylase of Klebsiella pneumoniae catalyses the turnover of acetyl and malonyl thioester residues on a coenzyme-A-like prosthetic group. Eur. J. Biochem. 237 (1996) 221–228. [DOI] [PMID: 8620876]
2.  Koo, J.H. and Kim, Y.S. Functional evaluation of the genes involved in malonate decarboxylation by Acinetobacter calcoaceticus. Eur. J. Biochem. 266 (1999) 683–690. [DOI] [PMID: 10561613]
3.  Handa, S., Koo, J.H., Kim, Y.S. and Floss, H.G. Stereochemical course of biotin-independent malonate decarboxylase catalysis. Arch. Biochem. Biophys. 370 (1999) 93–96. [DOI] [PMID: 10496981]
4.  Chohnan, S., Akagi, K. and Takamura, Y. Functions of malonate decarboxylase subunits from Pseudomonas putida. Biosci. Biotechnol. Biochem. 67 (2003) 214–217. [DOI] [PMID: 12619701]
5.  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 2023]

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