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ENZYME

ENZYME entry: EC 2.3.1.294

PURL: https://purl.expasy.org/enzyme/EC/2.3.1.294
Accepted Name
meromycolic acid 3-oxoacyl-(acyl carrier protein) synthase II
Alternative Name(s)
beta-ketoacyl-acyl carrier protein synthase KasB
Reaction catalysed
an ultra-long-chain di-unsaturated fatty acyl-[ACP] + malonyl-[ACP] + H(+) = a 3-oxo-ultra-long-chain di-unsaturated fatty acyl-[ACP] + holo-[ACP] + CO2
Comment(s)
  • The enzyme is part of the fatty acid synthase (FAS) II system of mycobacteria, which extends modified products of the FAS I system, eventually forming meromycolic acids that are incorporated into mycolic acids.
  • Meromycolic acids consist of a long chain, typically 50-60 carbons, which is functionalized by different groups.Two 3-oxoacyl-(acyl carrier protein) synthases function within the FAS II system, encoded by the kasA and kasB genes.
  • The two enzymes share some sequence identity but function independently on separate sets of substrates.
  • KasB differs from KasA (EC 2.3.1.293), by preferring longer substrates (closer to the upper limit), which also contain two double bonds.
Cross-references
BRENDA2.3.1.294
EC2PDB2.3.1.294
ExplorEnz2.3.1.294
KEGG Ligand Database for Enzyme Nomenclature2.3.1.294
IUBMB Enzyme Nomenclature2.3.1.294
MEDLINEFind literature relating to 2.3.1.294
MetaCyc2.3.1.294
Rhea expert-curated reactions2.3.1.294
UniProtKB/Swiss-Prot
P63457, KASB_MYCBOO69473, KASB_MYCLEP9WQD6, KASB_MYCTO
P9WQD7, KASB_MYCTU

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All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 2.3.1.-
All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 2.3.-.-
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