2M5D

Solution Structure of the Bacillus cereus Metallo-Beta-Lactamase BcII in Complex with R-Thiomandelic Acid


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Solution Structures of the Bacillus cereus Metallo-beta-Lactamase BcII and its Complex with the Broad Spectrum Inhibitor R-Thiomandelic Acid

Karsisiotis, A.I.Damblon, C.F.Roberts, G.C.K.

(2013) Biochem.J. --: --

  • DOI: 10.1042/BJ20131003
  • Primary Citation of Related Structures:  2M5C

  • PubMed Abstract: 
  • Metallo-β-lactamases, enzymes which inactivate β-lactam antibiotics, are of increasing biological and clinical significance as a source of antibiotic resistance in pathogenic bacteria. In the present study we describe the high-resolution solution NMR ...

    Metallo-β-lactamases, enzymes which inactivate β-lactam antibiotics, are of increasing biological and clinical significance as a source of antibiotic resistance in pathogenic bacteria. In the present study we describe the high-resolution solution NMR structures of the Bacillus cereus metallo-β-lactamase BcII and of its complex with R-thiomandelic acid, a broad-spectrum inhibitor of metallo-β-lactamases. This is the first reported solution structure of any metallo-β-lactamase. There are differences between the solution structure of the free enzyme and previously reported crystal structures in the loops flanking the active site, which are important for substrate and inhibitor binding and catalysis. The binding of R-thiomandelic acid and the roles of active-site residues are defined in detail. Changes in the enzyme structure upon inhibitor binding clarify the role of the mobile β3-β4 loop. Comparisons with other metallo-β-lactamases highlight the roles of individual amino-acid residues in the active site and the β3-β4 loop in inhibitor binding and provide information on the basis of structure-activity relationships among metallo-β-lactamase inhibitors.


    Related Citations: 
    • Complete (1)H, (15)N and (13)C resonance assignments of Bacillus cereus metallo-beta-lactamase and its complex with the inhibitor R-thiomandelic acid
      Karsisiotis, A.I.,Damblon, C.F.,Roberts, G.C.K.
      (2013) Biomol.Nmr Assign. --: --


    Organizational Affiliation

    *The Henry Wellcome Laboratories of Structural Biology, Department of Biochemistry, University of Leicester, Leicester LE1 9HN, U.K.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Beta-lactamase 2
A
227Bacillus cereusGene Names: blm
EC: 3.5.2.6
Find proteins for P04190 (Bacillus cereus)
Go to UniProtKB:  P04190
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
A
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
RTD
Query on RTD

Download SDF File 
Download CCD File 
A
(2R)-phenyl(sulfanyl)ethanoic acid
alpha-mercaptophenylacetic acid, R-thiomandelic acid
C8 H8 O2 S
QYIGFZOHYGYBLX-SSDOTTSWSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-10-09
    Type: Initial release