3P2P

ENHANCED ACTIVITY AND ALTERED SPECIFICITY OF PHOSPHOLIPASE A2 BY DELETION OF A SURFACE LOOP


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Observed: 0.186 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Enhanced activity and altered specificity of phospholipase A2 by deletion of a surface loop.

Kuipers, O.P.Thunnissen, M.M.de Geus, P.Dijkstra, B.W.Drenth, J.Verheij, H.M.de Haas, G.H.

(1989) Science 244: 82-85

  • DOI: 10.1126/science.2704992
  • Primary Citation of Related Structures:  
    3P2P

  • PubMed Abstract: 
  • Protein engineering and x-ray crystallography have been used to study the role of a surface loop that is present in pancreatic phospholipases but is absent in snake venom phospholipases. Removal of residues 62 to 66 from porcine pancreatic phospholipase A2 does not change the binding constant for micelles significantly, but it improves catalytic activity up to 16 times on micellar (zwitterionic) lecithin substrates ...

    Protein engineering and x-ray crystallography have been used to study the role of a surface loop that is present in pancreatic phospholipases but is absent in snake venom phospholipases. Removal of residues 62 to 66 from porcine pancreatic phospholipase A2 does not change the binding constant for micelles significantly, but it improves catalytic activity up to 16 times on micellar (zwitterionic) lecithin substrates. In contrast, the decrease in activity on negatively charged substrates is greater than fourfold. A crystallographic study of the mutant enzyme shows that the region of the deletion has a well-defined structure that differs from the structure of the wild-type enzyme. No structural changes in the active site of the enzyme were detected.


    Related Citations: 
    • Structure of Porcine Pancreatic Phospholipase A2 at 2.6 Angstroms Resolution and Comparison with Bovine Phospholipase A2
      Dijkstra, B.W., Renetseder, R., Kalk, K.H., Hol, W.G.J., Drenth, J.
      (1983) J Mol Biol 168: 163
    • The Structure of Bovine Pancreatic Prophospholipase A2 at 3.0 Angstroms Resolution
      Dijkstra, B.W., Vannes, G.J.H., Kalk, K.H., Brandenburg, N.P., Hol, W.G.J., Drenth, J.
      (1982) Acta Crystallogr B 38: 793
    • Structure of Bovine Pancreatic Phospholipase A2 at 1.7 Angstroms Resolution
      Dijkstra, B.W., Kalk, K.H., Hol, W.G.J., Drenth, J.
      (1981) J Mol Biol 147: 97
    • Active Site and Catalytic Mechanism of Phospholipase A2
      Dijkstra, B.W., Drenth, J., Kalk, K.H.
      (1981) Nature 289: 604
    • Three-Dimensional Structure and Disulfide Bond Connections in Bovine Pancreatic Phospholipase A2
      Dijkstra, B.W., Drenth, J., Kalk, K.H., Vandermaelen, P.J.
      (1978) J Mol Biol 124: 53

    Organizational Affiliation

    Department of Biochemistry, University of Utrecht, The Netherlands.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
PHOSPHOLIPASE A2A, B119Sus scrofaMutation(s): 0 
Gene Names: PLA2G1B
EC: 3.1.1.4
UniProt
Find proteins for P00592 (Sus scrofa)
Explore P00592 
Go to UniProtKB:  P00592
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP00592
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

Download Ideal Coordinates CCD File 
C [auth A],
D [auth B],
E [auth B]
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Observed: 0.186 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 45.8α = 90
b = 73.4β = 107.4
c = 37.2γ = 90
Software Package:
Software NamePurpose
TNTrefinement

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1990-01-15
    Type: Initial release
  • Version 1.1: 2008-03-03
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance