Crystal structure of the metallo-beta-lactamase BCII with D-captopril

Experimental Data Snapshot

  • Resolution: 1.18 Å
  • R-Value Free: 0.136 
  • R-Value Work: 0.120 
  • R-Value Observed: 0.120 

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Structural Basis of Metallo-beta-Lactamase Inhibition by Captopril Stereoisomers.

Brem, J.van Berkel, S.S.Zollman, D.Lee, S.Y.Gileadi, O.McHugh, P.J.Walsh, T.R.McDonough, M.A.Schofield, C.J.

(2015) Antimicrob Agents Chemother 60: 142-150

  • DOI: https://doi.org/10.1128/AAC.01335-15
  • Primary Citation of Related Structures:  
    4BZ3, 4C09, 4C1C, 4C1D, 4C1E, 4C1F, 4C1G, 4C1H

  • PubMed Abstract: 

    β-Lactams are the most successful antibacterials, but their effectiveness is threatened by resistance, most importantly by production of serine- and metallo-β-lactamases (MBLs). MBLs are of increasing concern because they catalyze the hydrolysis of almost all β-lactam antibiotics, including recent-generation carbapenems. Clinically useful serine-β-lactamase inhibitors have been developed, but such inhibitors are not available for MBLs. l-Captopril, which is used to treat hypertension via angiotensin-converting enzyme inhibition, has been reported to inhibit MBLs by chelating the active site zinc ions via its thiol(ate). We report systematic studies on B1 MBL inhibition by all four captopril stereoisomers. High-resolution crystal structures of three MBLs (IMP-1, BcII, and VIM-2) in complex with either the l- or d-captopril stereoisomer reveal correlations between the binding mode and inhibition potency. The results will be useful in the design of MBL inhibitors with the breadth of selectivity required for clinical application against carbapenem-resistant Enterobacteriaceae and other organisms causing MBL-mediated resistant infections.

  • Organizational Affiliation

    Department of Chemistry, University of Oxford, Oxford, United Kingdom.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
BETA-LACTAMASE 2227Bacillus cereusMutation(s): 0 
Find proteins for P04190 (Bacillus cereus)
Explore P04190 
Go to UniProtKB:  P04190
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP04190
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.18 Å
  • R-Value Free: 0.136 
  • R-Value Work: 0.120 
  • R-Value Observed: 0.120 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 53.16α = 90
b = 61.53β = 92.98
c = 69.52γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
XSCALEdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-08-27
    Type: Initial release
  • Version 1.1: 2014-09-17
    Changes: Other, Structure summary
  • Version 1.2: 2015-11-25
    Changes: Database references
  • Version 1.3: 2016-01-13
    Changes: Database references
  • Version 1.4: 2018-02-21
    Changes: Database references, Structure summary
  • Version 1.5: 2023-12-20
    Changes: Data collection, Database references, Derived calculations, Other, Refinement description