3lrf
Crystal structure of beta-ketoacyl synthase from brucella melitensisCrystal structure of beta-ketoacyl synthase from brucella melitensis
Structural highlights
FunctionEvolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedThe bacterial fatty acid pathway is essential for membrane synthesis and a range of other metabolic and cellular functions. The beta-ketoacyl-ACP synthases carry out the initial elongation reaction of this pathway, utilizing acetyl-CoA as a primer to elongate malonyl-ACP by two carbons, and subsequent elongation of the fatty acyl-ACP substrate by two carbons. Here we describe the structures of the beta-ketoacyl-ACP synthase I from Brucella melitensis in complex with platencin, 7-hydroxycoumarin, and (5-thiophen-2-ylisoxazol-3-yl)methanol. The enzyme is a dimer and based on structural and sequence conservation, harbors the same active site configuration as other beta-ketoacyl-ACP synthases. The platencin binding site overlaps with the fatty acyl compound supplied by ACP, while 7-hydroxyl-coumarin and (5-thiophen-2-ylisoxazol-3-yl)methanol bind at the secondary fatty acyl binding site. These high-resolution structures, ranging between 1.25 and 1.70 a resolution, provide a basis for in silico inhibitor screening and optimization, and can aid in rational drug design by revealing the high-resolution binding interfaces of molecules at the malonyl-ACP and acyl-ACP active sites. Structural characterization of beta-ketoacyl ACP synthase I bound to platencin and fragment screening molecules at two substrate binding sites.,Patterson EI, Nanson JD, Abendroth J, Bryan C, Sankaran B, Myler PJ, Forwood JK Proteins. 2019 Jun 25. doi: 10.1002/prot.25765. PMID:31237717[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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