5N55

mono-Zinc VIM-5 metallo-beta-lactamase in complex with (1-chloro-4-hydroxyisoquinoline-3-carbonyl)-L-tryptophan (Compound 2)

• PDB DOI: https://doi.org/10.2210/pdb5N55/pdb

• Classification: HYDROLASE
• Organism(s): Klebsiella pneumoniae
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2017-02-13 Released: 2017-05-17 
• Deposition Author(s): Li, G.-B., Brem, J., McDonough, M.A., Schofield, C.J.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.99 Å
• R-Value Free: 0.253 
• R-Value Work: 0.191 
• R-Value Observed: 0.194 

Literature

Crystallographic analyses of isoquinoline complexes reveal a new mode of metallo-beta-lactamase inhibition.

Li, G.B., Brem, J., Lesniak, R., Abboud, M.I., Lohans, C.T., Clifton, I.J., Yang, S.Y., Jimenez-Castellanos, J.C., Avison, M.B., Spencer, J., McDonough, M.A., Schofield, C.J.

(2017) Chem Commun (Camb) 53: 5806-5809

• PubMed: 28470248 
• DOI: https://doi.org/10.1039/c7cc02394d
• Primary Citation of Related Structures:  
  5N4S, 5N4T, 5N55, 5N58, 5NAI


• PubMed Abstract: 
  

  Crystallographic analyses of the VIM-5 metallo-β-lactamase (MBL) with isoquinoline inhibitors reveal non zinc ion binding modes. Comparison with other MBL-inhibitor structures directed addition of a zinc-binding thiol enabling identification of potent B1 MBL inhibitors. The inhibitors potentiate meropenem activity against clinical isolates harboring MBLs.

---

Organizational Affiliation: 

Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK. [e-mail] [e-mail].

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Biological Assembly 2  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 2 assigned by authors.

Biological Assembly 3  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 3 assigned by authors.

Macromolecule Content

• Total Structure Weight: 85.78 kDa 
• Atom Count: 5,376 
• Modelled Residue Count: 690 
• Deposited Residue Count: 798 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Class B metallo-beta-lactamase	A, B, C	266	Klebsiella pneumoniae	Mutation(s): 0  Gene Names: blaVIM-5
UniProt
Find proteins for Q8GKX2 (Klebsiella pneumoniae) Explore Q8GKX2  Go to UniProtKB:  Q8GKX2

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
8NN	E [auth A], G [auth B], I [auth C]	(1-chloro-4-hydroxyisoquinoline-3-carbonyl)-L-tryptophan C21 H16 Cl N3 O4 PVDFWPDMZYPBMH-INIZCTEOSA-N
ZN	D [auth A], F [auth B], H [auth C]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N

Binding Affinity Annotations
ID	Source	Binding Affinity
8NN	Binding MOAD:  5N55	Kd: 1030 (nM) from 1 assay(s)

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.99 Å
• R-Value Free: 0.253 
• R-Value Work: 0.191 
• R-Value Observed: 0.194 
• Space Group: F 2 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 66.219	α = 90
b = 155.191	β = 90
c = 267.733	γ = 90

Software Package:

Software Name	Purpose
SCALEPACK	data scaling
PHASER	phasing
PHENIX	refinement
PDB_EXTRACT	data extraction
HKL-3000	data reduction

Structure Validation

Entry History 

Deposition Data

• Released Date: 2017-05-17 
Deposition Author(s): Li, G.-B., Brem, J., McDonough, M.A., Schofield, C.J.

Revision History  

• Version 1.0: 2017-05-17
  Type: Initial release
  
• Version 1.1: 2017-06-07
  Changes: Database references
• Version 1.2: 2024-01-31
  Changes: Data collection, Database references, Derived calculations, Refinement description