1B4W

BASIC PHOSPHOLIPASE A2 FROM AGKISTRODON HALYS PALLAS-IMPLICATIONS FOR ITS ASSOCIATION AND ANTICOAGULANT ACTIVITIES BY X-RAY CRYSTALLOGRAPHY


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.286 
  • R-Value Work: 0.205 
  • R-Value Observed: 0.205 

wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 1.5 of the entry. See complete history


Literature

Structure of basic phospholipase A2 from Agkistrodon halys Pallas: implications for its association, hemolytic and anticoagulant activities.

Zhao, K.Zhou, Y.Lin, Z.

(2000) Toxicon 38: 901-916

  • DOI: 10.1016/s0041-0101(99)00193-2
  • Primary Citation of Related Structures:  
    1B4W

  • PubMed Abstract: 
  • The basic phospholipase A2 (PLA2) from the venom of Agkistrodon halys Pallas is a potent hemolytic toxin and anticoagulant. Crystal structure of the enzyme complexed with detergent n-octyl beta-D-glucopyranoside (beta-OG) in monoclinic crystal form has been determined to 2 ...

    The basic phospholipase A2 (PLA2) from the venom of Agkistrodon halys Pallas is a potent hemolytic toxin and anticoagulant. Crystal structure of the enzyme complexed with detergent n-octyl beta-D-glucopyranoside (beta-OG) in monoclinic crystal form has been determined to 2.6 A resolution. Beta-OG molecules were found in the hydrophobic channels of the enzyme. SDS-PAGE and dynamic light scattering measurements showed that the enzyme had a strong tendency to dimerise in aqueous solution. In the crystal structure the enzyme molecules associate into a tetramer with pseudo 222 symmetry, and the interfacial recognition site linked dimers constituting the tetramer have intensive interface interactions, and may be stable in solution. The structure reveals a unique positively charged face at the C-terminal region and a characteristic non-cationic 'anticoagulant' region (53-77). The face is supposed to be the hemolytic site, and based on sequence and structure comparison residues Trp70 and Glu53 instead of the basic residues in 'anticoagulant' region might play an important role in the anticoagulant activity.


    Related Citations: 
    • Refined Structure of Basic Phospholipase A2 from the Venom of Agkistrodon Halys Pallas in Orthorhombic Crystal Form I at 0.25Nm Resolution (in: C)
      Zhao, K.H., Song, S.Y., Lin, Z.J., Zhou, Y.C.
      (1999) Sci China C Life Sci 42: 80

    Organizational Affiliation

    National Laboratory of Biomacromolecules, Institute of Biophysics, Academia Sinica, Beijing, China.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
PROTEIN (PHOSPHOLIPASE A2)A, B, C, D122Gloydius halysMutation(s): 3 
EC: 3.1.1.4
UniProt
Find proteins for O42187 (Gloydius halys)
Explore O42187 
Go to UniProtKB:  O42187
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO42187
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
BOG
Query on BOG

Download Ideal Coordinates CCD File 
E [auth A],
F [auth D]
octyl beta-D-glucopyranoside
C14 H28 O6
HEGSGKPQLMEBJL-RKQHYHRCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.286 
  • R-Value Work: 0.205 
  • R-Value Observed: 0.205 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 100.453α = 90
b = 54.294β = 111.76
c = 108.388γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
X-PLORrefinement

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2000-01-12
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2018-04-04
    Changes: Data collection
  • Version 1.4: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Data collection, Derived calculations, Structure summary
  • Version 1.5: 2021-11-03
    Changes: Database references, Structure summary