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ENZYME entry: EC

Accepted Name
Mycobacterial beta-ketoacyl-[acyl carrier protein] synthase III.
Alternative Name(s)
Mycobacterial 3-oxoacyl-[acyl carrier protein] synthase III.
Reaction catalysed
Dodecanoyl-CoA + a malonyl-[acyl-carrier protein] <=> a 3-oxotetradecanoyl-[acyl-carrier protein] + CoA + CO(2)
  • The enzyme, characterized from mycobacteria, provides a link between the type I and type II fatty acid synthase systems (FAS-I and FAS-II, respectively) found in these organisms.
  • The enzyme acts on medium- and long-chain acyl-CoAs (C(12)-C(16)) produced by the FAS-I system, condensing them with malonyl-[acyl- carrier protein] (malonyl-AcpM) and forming starter molecules for the FAS-II system, which elongates them into meromycolic acids.
  • The enzyme has no activity with short-chain acyl-CoAs (e.g. acetyl- CoA), which are used by EC, or branched-chain acyl-CoAs, which are used by EC
PRIAM enzyme-specific profiles2.3.1.301
KEGG Ligand Database for Enzyme Nomenclature2.3.1.301
IUBMB Enzyme Nomenclature2.3.1.301
MEDLINEFind literature relating to
Rhea expert-curated reactions2.3.1.301

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