2cc1 | pdb_00002cc1

Crystal structure of the class A beta-lactamase from Mycobacterium fortuitum

spinqualitylabelsall models 2cc1, resolution 2.13Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2cc1 is a 1 chain structure with sequence from "mycobacterium_giae"_darzins_1950 "mycobacterium giae" darzins 1950. This structure supersedes the now removed PDB entry 1mfo. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Gene: blaF ("Mycobacterium giae" Darzins 1950) Activity: Beta-lactamase, with EC number 3.5.2.6 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMed beta-Lactamases are the main cause of bacterial resistance to penicillins and cephalosporins. Class A beta-lactamases, the largest group of beta-lactamases, have been found in many bacterial strains, including mycobacteria, for which no beta-lactamase structure has been previously reported. The crystal structure of the class A beta-lactamase from Mycobacterium fortuitum (MFO) has been solved at 2.13-A resolution. The enzyme is a chromosomally encoded broad-spectrum beta-lactamase with low specific activity on cefotaxime. Specific features of the active site of the class A beta-lactamase from M. fortuitum are consistent with its specificity profile. Arg278 and Ser237 favor cephalosporinase activity and could explain its broad substrate activity. The MFO active site presents similarities with the CTX-M type extended-spectrum beta-lactamases but lacks a specific feature of these enzymes, the VNYN motif (residues 103 to 106), which confers on CTX-M-type extended-spectrum beta-lactamases a more efficient cefotaximase activity. Crystal structure of the Mycobacterium fortuitum class A beta-lactamase: structural basis for broad substrate specificity.,Sauvage E, Fonze E, Quinting B, Galleni M, Frere JM, Charlier P Antimicrob Agents Chemother. 2006 Jul;50(7):2516-21. PMID:16801434 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Beta-lactamase

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