4P2P

AN INDEPENDENT CRYSTALLOGRAPHIC REFINEMENT OF PORCINE PHOSPHOLIPASE A2 AT 2.4 ANGSTROMS RESOLUTION

• PDB DOI: https://doi.org/10.2210/pdb4P2P/pdb

• Classification: CARBOXYLIC ESTER HYDROLASE
• Organism(s): Sus scrofa
• Mutation(s): No 
• Membrane Protein: Yes  OPM


• Deposited: 1991-10-22 Released: 1992-01-15 
• Deposition Author(s): Finzel, B.C., Ohlendorf, D.H., Weber, P.C., Salemme, F.R.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.40 Å
• R-Value Observed: 0.210 

Literature

An independent crystallographic refinement of porcine phospholipase A2 at 2.4 A resolution

Finzel, B.C., Ohlendorf, D.H., Weber, P.C., Salemme, F.R.

(1991) Acta Crystallogr B 47: 558-559

• PubMed: 1930837 
• DOI: https://doi.org/10.1107/s0108768190012939
• Primary Citation of Related Structures:  
  4P2P


• PubMed Abstract: 
  

  Porcine phospholipase A2 (Mr = 13,980), trigonal, P3(1)21, a = b = 69.4, c = 70.4 A, one molecule per asymmetric unit, lambda (Cu K alpha) = 1.54 A. Model incorporating 975 protein atoms and eight solvent molecules refined by restrained least-squares fit to a residual R = 0.21 for 6382 reflections from 5 to 2.4 A resolution.

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Organizational Affiliation: 

E. I. du Pont de Nemours and Company, Central Research and Development Department, Wilmington, DE 19880-0228.

Biological Assembly 1  

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

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

Macromolecule Content

• Total Structure Weight: 14.09 kDa 
• Atom Count: 981 
• Modelled Residue Count: 124 
• Deposited Residue Count: 124 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
PHOSPHOLIPASE A2	A	124	Sus scrofa	Mutation(s): 0  EC: 3.1.1.4 Membrane Entity: Yes
UniProt
Find proteins for P00592 (Sus scrofa) Explore P00592  Go to UniProtKB:  P00592

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CA	B [auth A], C [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.40 Å
• R-Value Observed: 0.210 
• Space Group: P 3₁ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 69.4	α = 90
b = 69.4	β = 90
c = 70.4	γ = 120

Software Package:

Software Name	Purpose
PROLSQ	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 1992-01-15 
Deposition Author(s): Finzel, B.C., Ohlendorf, D.H., Weber, P.C., Salemme, F.R.

Revision History  

• Version 1.0: 1992-01-15
  Type: Initial release
  
• Version 1.1: 2008-03-03
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Derived calculations, Version format compliance
• Version 1.3: 2017-11-29
  Changes: Derived calculations, Other
• Version 1.4: 2024-11-06
  Changes: Data collection, Database references, Derived calculations, Structure summary