PMID- 10037680 OWN - NLM STAT- MEDLINE DCOM- 19990330 LR - 20240109 IS - 0021-9258 (Print) IS - 0021-9258 (Linking) VI - 274 IP - 10 DP - 1999 Mar 5 TI - Structure of the complex between the antibiotic cerulenin and its target, beta-ketoacyl-acyl carrier protein synthase. PG - 6031-4 AB - In the biosynthesis of fatty acids, the beta-ketoacyl-acyl carrier protein (ACP) synthases catalyze chain elongation by the addition of two-carbon units derived from malonyl-ACP to an acyl group bound to either ACP or CoA. The enzyme is a possible drug target for treatment of certain cancers and for tuberculosis. The crystal structure of the complex of the enzyme from Escherichia coli, and the fungal mycotoxin cerulenin reveals that the inhibitor is bound in a hydrophobic pocket formed at the dimer interface. Cerulenin is covalently attached to the active site cysteine through its C2 carbon atom. The fit of the inhibitor to the active site is not optimal, and there is thus room for improvement through structure based design. FAU - Moche, M AU - Moche M AD - Department of Medical Biochemistry and Biophysics, Doktorsringen 9A1, Karolinska Institutet, S-171 77 Stockholm, Sweden. FAU - Schneider, G AU - Schneider G FAU - Edwards, P AU - Edwards P FAU - Dehesh, K AU - Dehesh K FAU - Lindqvist, Y AU - Lindqvist Y LA - eng SI - PDB/1B3N SI - PDB/R1BNSF PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - J Biol Chem JT - The Journal of biological chemistry JID - 2985121R RN - 0 (Antifungal Agents) RN - 0 (Isoenzymes) RN - 17397-89-6 (Cerulenin) RN - EC 2.3.1.- (beta-ketoacyl-acyl carrier protein synthase I) RN - EC 2.3.1.41 (3-Oxoacyl-(Acyl-Carrier-Protein) Synthase) SB - IM MH - 3-Oxoacyl-(Acyl-Carrier-Protein) Synthase/*chemistry/metabolism MH - Antifungal Agents/chemistry/metabolism MH - Binding Sites MH - Cerulenin/*chemistry/metabolism MH - Escherichia coli MH - Isoenzymes/*chemistry/metabolism MH - Molecular Sequence Data MH - Protein Binding MH - Protein Conformation MH - Substrate Specificity EDAT- 1999/02/26 00:00 MHDA- 1999/02/26 00:01 CRDT- 1999/02/26 00:00 PHST- 1999/02/26 00:00 [pubmed] PHST- 1999/02/26 00:01 [medline] PHST- 1999/02/26 00:00 [entrez] AID - S0021-9258(19)87549-X [pii] AID - 10.1074/jbc.274.10.6031 [doi] PST - ppublish SO - J Biol Chem. 1999 Mar 5;274(10):6031-4. doi: 10.1074/jbc.274.10.6031.