1S6R

908R class c beta-lactamase bound to iodo-acetamido-phenyl boronic acid


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.24 Å
  • R-Value Free: 0.293 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure of Enterobacter cloacae 908R class C beta-lactamase bound to iodo-acetamido-phenyl boronic acid, a transition-state analogue.

Wouters, J.Fonze, E.Vermeire, M.Frere, J.M.Charlier, P.

(2003) Cell.Mol.Life Sci. 60: 1764-1773


  • PubMed Abstract: 
  • The structures of the class C beta-lactamase from Enterobacter cloacae 908R alone and in complex with a boronic acid transition-state analogue were determined by X-ray crystallography at 2.1 and 2.3 A, respectively. The structure of the enzyme resemb ...

    The structures of the class C beta-lactamase from Enterobacter cloacae 908R alone and in complex with a boronic acid transition-state analogue were determined by X-ray crystallography at 2.1 and 2.3 A, respectively. The structure of the enzyme resembles those of other class C beta-lactamases. The structure of the complex with the transition-state analogue, iodo-acetamido-phenyl boronic acid, shows that the inhibitor is covalently bound to the active-site serine (Ser64). Binding of the inhibitor within the active site is compared with previously determined structures of complexes with other class C enzymes. The structure of the boronic acid adduct indicates ways to improve the affinity of this class of inhibitors. This structure of 908R class C beta-lactamase in complex with a transition-state analogue provides further insights into the mechanism of action of these hydrolases.


    Organizational Affiliation

    Institut de Recherche Microbiologiques JM Wiame, Brussels, Belgium. jwouters@dbm.ulb.ac.be




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
beta-lactamase
A
359Enterobacter cloacaeMutation(s): 0 
Gene Names: ampC
EC: 3.5.2.6
Find proteins for Q93CA2 (Enterobacter cloacae)
Go to UniProtKB:  Q93CA2
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
IAP
Query on IAP

Download SDF File 
Download CCD File 
A
4-IODO-ACETAMIDO PHENYLBORONIC ACID
C8 H9 B I N O3
LMHXPDZPXBIIEX-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.24 Å
  • R-Value Free: 0.293 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 46.381α = 90.00
b = 83.763β = 90.00
c = 95.810γ = 90.00
Software Package:
Software NamePurpose
SHELXphasing
SHELXmodel building
SHELXL-97refinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2004-01-27 
  • Released Date: 2004-02-24 
  • Deposition Author(s): Wouters, J.

Revision History 

  • Version 1.0: 2004-02-24
    Type: Initial release
  • Version 1.1: 2008-04-29
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance