5XP6

native structure of NDM-1 crystallized at pH5.5


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 0.95 Å
  • R-Value Free: 0.137 
  • R-Value Work: 0.127 
  • R-Value Observed: 0.127 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Bismuth antimicrobial drugs serve as broad-spectrum metallo-beta-lactamase inhibitors

Wang, R.Lai, T.P.Gao, P.Zhang, H.Ho, P.L.Woo, P.C.Ma, G.Kao, R.Y.Li, H.Sun, H.

(2018) Nat Commun 9: 439-439

  • DOI: https://doi.org/10.1038/s41467-018-02828-6
  • Primary Citation of Related Structures:  
    5XP6, 5XP9

  • PubMed Abstract: 

    Drug-resistant superbugs pose a huge threat to human health. Infections by Enterobacteriaceae producing metallo-β-lactamases (MBLs), e.g., New Delhi metallo-β-lactamase 1 (NDM-1) are very difficult to treat. Development of effective MBL inhibitors to revive the efficacy of existing antibiotics is highly desirable. However, such inhibitors are not clinically available till now. Here we show that an anti-Helicobacter pylori drug, colloidal bismuth subcitrate (CBS), and related Bi(III) compounds irreversibly inhibit different types of MBLs via the mechanism, with one Bi(III) displacing two Zn(II) ions as revealed by X-ray crystallography, leading to the release of Zn(II) cofactors. CBS restores meropenem (MER) efficacy against MBL-positive bacteria in vitro, and in mice infection model, importantly, also slows down the development of higher-level resistance in NDM-1-positive bacteria. This study demonstrates a high potential of Bi(III) compounds as the first broad-spectrum B1 MBL inhibitors to treat MBL-positive bacterial infection in conjunction with existing carbapenems.


  • Organizational Affiliation

    Department of Chemistry, The University of Hong Kong, Pokfulam Road, Pok Fu Lam, Hong Kong.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Metallo-beta-lactamase type 2243Klebsiella pneumoniaeMutation(s): 0 
Gene Names: blaNDM-1
EC: 3.5.2.6
UniProt
Find proteins for C7C422 (Klebsiella pneumoniae)
Explore C7C422 
Go to UniProtKB:  C7C422
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupC7C422
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
SIN
Query on SIN

Download Ideal Coordinates CCD File 
J [auth A]SUCCINIC ACID
C4 H6 O4
KDYFGRWQOYBRFD-UHFFFAOYSA-N
ZN
Query on ZN

Download Ideal Coordinates CCD File 
B [auth A],
C [auth A]
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
EDO
Query on EDO

Download Ideal Coordinates CCD File 
E [auth A],
F [auth A],
G [auth A],
H [auth A],
I [auth A]
1,2-ETHANEDIOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
OH
Query on OH

Download Ideal Coordinates CCD File 
D [auth A]HYDROXIDE ION
H O
XLYOFNOQVPJJNP-UHFFFAOYSA-M
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 0.95 Å
  • R-Value Free: 0.137 
  • R-Value Work: 0.127 
  • R-Value Observed: 0.127 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 41.425α = 90
b = 59.807β = 97.78
c = 42.098γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
HKL-2000data scaling
PHASERphasing
REFMACrefinement
PDB_EXTRACTdata extraction
HKL-2000data reduction

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2018-03-07
    Type: Initial release
  • Version 1.1: 2023-11-22
    Changes: Data collection, Database references, Refinement description