2cc1

From Proteopedia

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

PDB ID 2cc1

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Structural highlights

2cc1 is a 1 chain structure with sequence from Mycolicibacterium fortuitum. 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.
Method:	X-ray diffraction, Resolution 2.13Å
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

BLAF_MYCFO

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^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Sauvage E, Fonze E, Quinting B, Galleni M, Frere JM, Charlier P. Crystal structure of the Mycobacterium fortuitum class A beta-lactamase: structural basis for broad substrate specificity. Antimicrob Agents Chemother. 2006 Jul;50(7):2516-21. PMID:16801434 doi:50/7/2516