2OSN

An alternate description of a crystal structure of phospholipase A2 from Bungarus caeruleus

• PDB DOI: https://doi.org/10.2210/pdb2OSN/pdb

• Classification: TOXIN
• Organism(s): Bungarus caeruleus
• Mutation(s): No 
• Membrane Protein: Yes  OPM


• Deposited: 2007-02-06 Released: 2007-03-06 
• Deposition Author(s): Stenkamp, R.E., Le Trong, I.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.50 Å
• R-Value Free: 0.288 
• R-Value Work: 0.213 
• R-Value Observed: 0.216 

Literature

An alternate description of two crystal structures of phospholipase A(2) from Bungarus caeruleus.

Le Trong, I., Stenkamp, R.E.

(2007) Acta Crystallogr D Biol Crystallogr 63: 548-549

• PubMed: 17372360 
• DOI: https://doi.org/10.1107/S0907444907007354
• Primary Citation of Related Structures:  
  2OSN


• PubMed Abstract: 
  

  Reinterpretations of the space-group symmetry are reported for two crystal structures of phospholipase A(2) isoforms (PDB codes 1u4j and 1g2x). The two structures reported in space groups R3 and C2 are isomorphous with a third isoform with space group R32 (PDB code 1fe5). The original structure reports were interpreted in terms of different oligomeric forms of the isoforms, but these conclusions are not supported by the isomorphous structures.

---

Organizational Affiliation: 

Departments of Biological Structure and Biochemistry, Biomolecular Structure Center, University of Washington, Seattle, WA 98195, USA.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 13.09 kDa 
• Atom Count: 932 
• Modelled Residue Count: 118 
• Deposited Residue Count: 118 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Phospholipase A2 isoform 3	A	118	Bungarus caeruleus	Mutation(s): 0  EC: 3.1.1.4 Membrane Entity: Yes
UniProt
Find proteins for Q6SLM0 (Bungarus caeruleus) Explore Q6SLM0  Go to UniProtKB:  Q6SLM0

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CL	B [auth A], C [auth A], D [auth A]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.50 Å
• R-Value Free: 0.288 
• R-Value Work: 0.213 
• R-Value Observed: 0.216 
• Space Group: R 3 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 57.104	α = 89.75
b = 57.104	β = 89.75
c = 57.104	γ = 89.75

Software Package:

Software Name	Purpose
REFMAC	refinement
PDB_EXTRACT	data extraction

Structure Validation

Entry History 

Deposition Data

• Released Date: 2007-03-06 
Deposition Author(s): Stenkamp, R.E., Le Trong, I.

Revision History  

• Version 1.0: 2007-03-06
  Type: Initial release
  
• Version 1.1: 2008-05-01
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2017-11-22
  Changes: Database references
• Version 1.4: 2023-08-30
  Changes: Data collection, Database references, Derived calculations, Refinement description