4GN2 | pdb_00004gn2

Crystal Structure of OXA-45, a Class D beta-lactamase with extended spectrum activity

• PDB DOI: https://doi.org/10.2210/pdb4GN2/pdb

• Classification: HYDROLASE
• Organism(s): Pseudomonas aeruginosa
• Expression System: Escherichia coli DH5[alpha]
• Mutation(s): No 


• Deposited: 2012-08-16 Released: 2013-08-21 
• Deposition Author(s): Martin, J.D., Xiong, X.L., Catto, L.E., Toleman, M.A., Walsh, T.R., Clarke, A.R., Spencer, J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.01 Å
• R-Value Free: 
  0.216 (Depositor), 0.220 (DCC) 
• R-Value Work: 
  0.166 (Depositor), 0.170 (DCC) 
• R-Value Observed: 
  0.169 (Depositor) 

Starting Model: experimental

Literature

Structural and Kinetic Characterization of OXA-45, a Class D beta-Lactamase with Extended Spectrum activity

Martin, J.D., Xiong, X.L., Catto, L.E., Toleman, M.A., Walsh, T.R., Clarke, A.R., Spencer, J.

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: 25.96 kDa 
• Atom Count: 2,118 
• Modeled Residue Count: 240 
• Deposited Residue Count: 240 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Oxacillinase	A	240	Pseudomonas aeruginosa	Mutation(s): 0  Gene Names: blaoxa45, oxa45 EC: 3.5.2.6
UniProt
Find proteins for Q7WZC7 (Pseudomonas aeruginosa) Explore Q7WZC7  Go to UniProtKB:  Q7WZC7

Small Molecules

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: 2.01 Å
• R-Value Free:  0.216 (Depositor), 0.220 (DCC) 
• R-Value Work:  0.166 (Depositor), 0.170 (DCC) 
• R-Value Observed: 0.169 (Depositor) 

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 45.169	α = 90
b = 47.488	β = 90
c = 108.903	γ = 90

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
AMoRE	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction

Structure Validation

Entry History 

Deposition Data

• Released Date: 2013-08-21 
Deposition Author(s): Martin, J.D., Xiong, X.L., Catto, L.E., Toleman, M.A., Walsh, T.R., Clarke, A.R., Spencer, J.

Revision History  

• Version 1.0: 2013-08-21
  Type: Initial release
  
• Version 1.1: 2023-09-13
  Changes: Data collection, Database references, Derived calculations, Refinement description
• Version 1.2: 2023-12-06
  Changes: Data collection