Biological Assembly 1  

 3D View: Structure | 1D-3D View | Validation Report | Ligand Interaction

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

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

Macromolecule Content

• Total Structure Weight: 55.36 kDa 
• Atom Count: 4355 
• Modelled Residue Count: 492 
• Deposited Residue Count: 492 
• Unique protein chains: 1

1FOF

CRYSTAL STRUCTURE OF THE CLASS D BETA-LACTAMASE OXA-10

• PDB DOI: 10.2210/pdb1FOF/pdb

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


• Deposited: 2000-08-28 Released: 2000-10-09 
• Deposition Author(s): Paetzel, M., Danel, F., de Castro, L., Mosimann, S.C., Page, M.G.P., Strynadka, N.C.J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.208 
• R-Value Work: 0.177 
• R-Value Observed: 0.177 

Literature

Crystal structure of the class D beta-lactamase OXA-10.

Paetzel, M., Danel, F., de Castro, L., Mosimann, S.C., Page, M.G., Strynadka, N.C.

(2000) Nat Struct Biol 7: 918-925

• PubMed: 11017203 
• DOI: 10.1038/79688
• Primary Citation of Related Structures:  
  1FOF


• PubMed Abstract: 
  

We report the crystal structure of a class D beta-lactamase, the broad spectrum enzyme OXA-10 from Pseudomonas aeruginosa at 2.0 A resolution. There are significant differences between the overall fold observed in this structure and those of the evolutionarily related class A and class C beta-lactamases. Furthermore, the structure suggests the unique, cation mediated formation of a homodimer. Kinetic and hydrodynamic data shows that the dimer is a relevant species in solution and is the more active form of the enzyme. Comparison of the molecular details of the active sites of the class A and class C enzymes with the OXA-10 structure reveals that there is no counterpart in OXA-10 to the residues proposed to act as general bases in either of these enzymes (Glu 166 and Tyr 150, respectively). Our structures of the native and chloride inhibited forms of OXA-10 suggest that the class D enzymes have evolved a distinct catalytic mechanism for beta-lactam hydrolysis. Clinical variants of OXA-10 are also discussed in light of the structure.

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Organizational Affiliation: 

Department of Biochemistry and Molecular Biology, University of British Columbia, 2146 Health Sciences Mall, Vancouver, British Columbia, V6T 1Z3, Canada.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
BETA LACTAMASE OXA-10	A, B	246	Pseudomonas aeruginosa	Mutation(s): 0  Gene Names: bla, oxa10, pse2 EC: 3.5.2.6
UniProt
Find proteins for P14489 (Pseudomonas aeruginosa) Explore P14489  Go to UniProtKB:  P14489

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SO4	D [auth A], F [auth B]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
CO	C [auth A], E [auth B]	COBALT (II) ION Co XLJKHNWPARRRJB-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.208 
• R-Value Work: 0.177 
• R-Value Observed: 0.177 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 48.4	α = 90
b = 96.2	β = 90
c = 125.7	γ = 90

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
SHARP	phasing
CNS	refinement

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2000-08-28 
• Released Date: 2000-10-09 
Deposition Author(s): Paetzel, M., Danel, F., de Castro, L., Mosimann, S.C., Page, M.G.P., Strynadka, N.C.J.

Revision History  

• Version 1.0: 2000-10-09
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance