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2cc1

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{{STRUCTURE_2cc1| PDB=2cc1 | SCENE= }}
{{STRUCTURE_2cc1| PDB=2cc1 | SCENE= }}
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'''CRYSTAL STRUCTURE OF THE CLASS A BETA-LACTAMASE FROM MYCOBACTERIUM FORTUITUM'''
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===CRYSTAL STRUCTURE OF THE CLASS A BETA-LACTAMASE FROM MYCOBACTERIUM FORTUITUM===
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==Overview==
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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.
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The line below this paragraph, {{ABSTRACT_PUBMED_16801434}}, adds the Publication Abstract to the page
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(as it appears on PubMed at http://www.pubmed.gov), where 16801434 is the PubMed ID number.
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{{ABSTRACT_PUBMED_16801434}}
==About this Structure==
==About this Structure==
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[[Category: Hydrolase]]
[[Category: Hydrolase]]
[[Category: Penicillin]]
[[Category: Penicillin]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 21:44:38 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 29 14:51:23 2008''

Revision as of 11:51, 29 July 2008

Image:2cc1.png

Template:STRUCTURE 2cc1

CRYSTAL STRUCTURE OF THE CLASS A BETA-LACTAMASE FROM MYCOBACTERIUM FORTUITUM

Template:ABSTRACT PUBMED 16801434

About this Structure

2CC1 is a Single protein structure. This structure supersedes the now removed PDB entry 1mfo. Full crystallographic information is available from OCA.

Reference

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

Page seeded by OCA on Tue Jul 29 14:51:23 2008

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