4len

CTX-M-9 in complex with the broad spectrum inhibitor 3-(2- carboxyvinyl)benzo(b)thiophene-2-boronic acid

spinqualitylabelsall models 4len, resolution 1.50Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 4len is a 2 chain structure with sequence from "bacillus_coli"_migula_1895 "bacillus coli" migula 1895. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: 2GK Gene: blaCTX-M-9, blaCTX-M-9a, blaCTX-M-9a blaCTX-M-9 blaCTX-M-9b, blaCTX-M-9b ("Bacillus coli" Migula 1895) Activity: Beta-lactamase, with EC number 3.5.2.6 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Publication Abstract from PubMed Production of beta-lactamases (BLs) is the most widespread resistance mechanism adopted by bacteria to fight beta-lactam antibiotics. The substrate spectrum of BLs has become increasingly broad, posing a serious health problem. Thus, there is an urgent need for novel BL inhibitors. Boronic acid transition-state analogues are able to reverse the resistance conferred by class A and C BLs. We describe a boronic acid analogue possessing interesting and potent broad-spectrum activity vs class A and C serine-based BLs. Starting from benzo(b)thiophene-2-boronic acid (BZBTH2B), a nanomolar non-beta-lactam inhibitor of AmpC that can potentiate the activity of a third-generation cephalosporin against AmpC-producing resistant bacteria, we designed a novel broad-spectrum nanomolar inhibitor of class A and C BLs. Structure-based drug design (SBDD), synthesis, enzymology data, and X-ray crystallography results are discussed. We clarified the inhibitor binding geometry responsible for broad-spectrum activity vs serine-active BLs using double mutant thermodynamic cycle studies. Targeting Class A and C Serine beta-Lactamases with a Broad-Spectrum Boronic Acid Derivative.,Tondi D, Venturelli A, Bonnet R, Pozzi C, Shoichet BK, Costi MP J Med Chem. 2014 Jun 16. PMID:24882105 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Beta-lactamase 3D structures

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