3P2P

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å

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


  • 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 phospholip ...

    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: 
    • 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.,Sect.B 38: 793
    • 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
    • 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
    • Active Site and Catalytic Mechanism of Phospholipase A2
      Dijkstra, B.W.,Drenth, J.,Kalk, K.H.
      (1981) Nature 289: 604
    • 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


    Organizational Affiliation

    Department of Biochemistry, University of Utrecht, The Netherlands.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PHOSPHOLIPASE A2
A, B
119Sus scrofaGene Names: PLA2G1B
EC: 3.1.1.4
Find proteins for P00592 (Sus scrofa)
Go to Gene View: PLA2G1B
Go to UniProtKB:  P00592
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

Download SDF File 
Download CCD File 
A, B
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 45.800α = 90.00
b = 73.400β = 107.40
c = 37.200γ = 90.00
Software Package:
Software NamePurpose
TNTrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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