3ZNT

Crystal structure of OXA-24 class D beta-lactamase with tazobactam

• PDB DOI: https://doi.org/10.2210/pdb3ZNT/pdb

• Classification: HYDROLASE
• Organism(s): Acinetobacter baumannii
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2013-02-18 Released: 2014-01-08 
• Deposition Author(s): Power, P., Sauvage, E., Herman, R., Kerff, F., Charlier, P.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.95 Å
• R-Value Free: 0.209 
• R-Value Work: 0.182 
• R-Value Observed: 0.183 

Starting Model: experimental

Literature

Crystal Structure of Oxa-24 Beta-Lactamase Inhibited by Tazobactam

Power, P., Sauvage, E., Herman, R., Galleni, M., Gutkind, G., Charlier, P., Kerff, F.

To be published.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 28.13 kDa 
• Atom Count: 2,053 
• Modelled Residue Count: 245 
• Deposited Residue Count: 245 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
BETA-LACTAMASE	A	245	Acinetobacter baumannii	Mutation(s): 0  EC: 3.5.2.6
UniProt
Find proteins for Q8RLA6 (Acinetobacter baumannii) Explore Q8RLA6  Go to UniProtKB:  Q8RLA6

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
TBE	B [auth A]	TAZOBACTAM INTERMEDIATE C10 H14 N4 O5 S ANZZKUOZZHRUQC-AARLMMRRSA-N
SO4	C [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
KCX	A	L-PEPTIDE LINKING	C7 H14 N2 O4		LYS

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.95 Å
• R-Value Free: 0.209 
• R-Value Work: 0.182 
• R-Value Observed: 0.183 
• Space Group: P 4₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 102.898	α = 90
b = 102.898	β = 90
c = 86.344	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
XDS	data reduction
XSCALE	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2014-01-08 
Deposition Author(s): Power, P., Sauvage, E., Herman, R., Kerff, F., Charlier, P.

Revision History  

• Version 1.0: 2014-01-08
  Type: Initial release
  
• Version 1.1: 2023-12-20
  Changes: Data collection, Database references, Derived calculations, Other, Refinement description