2CC1

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.13 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.167 
  • R-Value Observed: 0.169 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

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, J.M.Charlier, P.

(2006) Antimicrob Agents Chemother 50: 2516-2521

  • DOI: 10.1128/AAC.01226-05
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • 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-lactamas ...

    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.


    Organizational Affiliation

    Centre d'Ingénierie des Protéines, Université de Liège, Institut de Physique B5, B-4000 Liège, Belgium. eric.sauvage@ulg.ac.be



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Beta-lactamaseA262Mycolicibacterium fortuitumMutation(s): 0 
Gene Names: blaF
EC: 3.5.2.6
Find proteins for Q59517 (Mycolicibacterium fortuitum)
Explore Q59517 
Go to UniProtKB:  Q59517
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.13 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.167 
  • R-Value Observed: 0.169 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 35.66α = 90
b = 73.42β = 90
c = 91.32γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
AMoREphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-01-13
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2018-12-12
    Changes: Data collection, Database references, Source and taxonomy, Structure summary