4c1g

Crystal structure of the metallo-beta-lactamase IMP-1 with D-captopril

spinqualitylabelsall models 4c1g, resolution 1.71Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 4c1g is a 2 chain structure with sequence from Serratia marcescens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.714Å Ligands: MCO, SO4, ZN Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function BLAB_SERMA Confers resistance to imipenem and broad-spectrum beta-lactams. Also hydrolyzes carbapenems. Publication Abstract from PubMed beta-Lactams are the most successful antibacterials, but their effectiveness is threatened by resistance, most importantly by production of serine- and metallo-beta-lactamases (MBLs). MBLs are of increasing concern because they catalyse the hydrolysis of almost all beta-lactam antibiotics, including recent generation carbapenems. Clinically useful serine-beta-lactamase inhibitors have been developed, but such inhibitors are not available for MBLs. l-Captopril, used to treat hypertension via angiotensin-converting enzyme inhibition, has been reported to inhibit MBLs by chelating to the active site zinc ions via its thiol(ate). We report systematic studies on B1 MBL inhibition by all four captopril stereoisomers. High resolution crystal structures of three MBLs (IMP-1, BcII and VIM-2) in complex with either l-or d-captopril stereoisomers reveal correlations between the binding modes and inhibition potency. The results will be useful in the design of MBL inhibitors with the breadth of selectivity required for clinical application against carbapenem-resistant Enterobacteriaceae and other MBL mediated resistant infections. Structural basis of metallo-beta-lactamase inhibition by captopril stereoisomers.,Brem J, van Berkel SS, Zollman D, Lee SY, Gileadi O, McHugh PJ, Walsh TR, McDonough MA, Schofield CJ Antimicrob Agents Chemother. 2015 Oct 19. pii: AAC.01335-15. PMID:26482303 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Beta-lactamase 3D structures

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