1POB

CRYSTAL STRUCTURE OF COBRA-VENOM PHOSPHOLIPASE A2 IN A COMPLEX WITH A TRANSITION-STATE ANALOGUE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Work: 0.179 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure of cobra-venom phospholipase A2 in a complex with a transition-state analogue.

White, S.P.Scott, D.L.Otwinowski, Z.Gelb, M.H.Sigler, P.B.

(1990) Science 250: 1560-1563


  • PubMed Abstract: 
  • The crystal structure of a complex between a phosphonate transition-state analogue and the phospholipase A2 (PLA2) from Naja naja atra venom has been solved and refined to a resolution of 2.0 angstroms. The identical stereochemistry of the two comple ...

    The crystal structure of a complex between a phosphonate transition-state analogue and the phospholipase A2 (PLA2) from Naja naja atra venom has been solved and refined to a resolution of 2.0 angstroms. The identical stereochemistry of the two complexes that comprise the crystal's asymmetric unit indicates both the manner in which the transition state is stabilized and how the hydrophobic fatty acyl chains of the substrate are accommodated by the enzyme during interfacial catalysis. The critical features that suggest the chemistry of binding and catalysis are the same as those seen in the crystal structure of a similar complex formed with the evolutionarily distant bee-venom PLA2.


    Related Citations: 
    • Interfacial Catalysis: The Mechanism of Phospholipase A2
      Scott, D.L.,White, S.P.,Otwinowski, Z.,Yuan, W.,Gelb, M.H.,Sigler, P.B.
      (1990) Science 250: 1541


    Organizational Affiliation

    Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, CT 06511.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PHOSPHOLIPASE A2
A, B
118Naja atraMutation(s): 0 
EC: 3.1.1.4
Find proteins for P00598 (Naja atra)
Go to UniProtKB:  P00598
Small Molecules
Ligands 2 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
GEL
Query on GEL

Download SDF File 
Download CCD File 
A, B
1-O-OCTYL-2-HEPTYLPHOSPHONYL-SN-GLYCERO-3-PHOSPHOETHANOLAMINE
C20 H45 N O8 P2
RCCNUBYROFOKAU-HXUWFJFHSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Work: 0.179 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 34.600α = 90.00
b = 73.500β = 90.00
c = 181.600γ = 90.00
Software Package:
Software NamePurpose
X-PLORphasing
PROFFTrefinement
X-PLORmodel building
X-PLORrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1993-10-31
    Type: Initial release
  • Version 1.1: 2008-03-03
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance