1UMR

Crystal structure of the platelet activator convulxin, a disulfide linked a4b4 cyclic tetramer from the venom of Crotalus durissus terrificus


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.264 
  • R-Value Work: 0.187 
  • R-Value Observed: 0.190 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Crystal Structure of the Platelet Activator Convulxin, a Disulfide Linked A4B4 Cyclic Tetramer from the Venom of Crotalus Durissus Terrificus

Murakami, M.T.Zela, S.P.Gava, L.M.Michelan-Duarte, S.Cintra, A.C.O.Arni, R.K.

(2003) Biochem Biophys Res Commun 310: 478

  • DOI: 10.1016/j.bbrc.2003.09.032
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Convulxin (CVX), a C-type lectin, isolated from the venom of the South American rattlesnake Crotalus durissus terrificus, causes cardiovascular and respiratory disturbances and is a potent platelet activator which binds to platelet glycoprotein GPVI. ...

    Convulxin (CVX), a C-type lectin, isolated from the venom of the South American rattlesnake Crotalus durissus terrificus, causes cardiovascular and respiratory disturbances and is a potent platelet activator which binds to platelet glycoprotein GPVI. The structure of CVX has been solved at 2.4A resolution to a crystallographic residual of 18.6% (R(free)=26.4%). CVX is a disulfide linked heterodimer consisting of homologous alpha and beta chains. The heterodimers are additionally linked by disulfide bridges to form cyclic alpha(4)beta(4)heterotetramers. These domains exhibit significant homology to the carbohydrate-binding domains of C-type lectins, to the factor IX-binding protein (IX-bp), and to flavocetin-A (Fl-A) but sequence and structural differences are observed in both the domains in the putative Ca(2+)and carbohydrate binding regions.


    Related Citations: 
    • Initial Structural Analysis of an Alpha(4)Beta(4) C-Type Lectin from the Venom of Crotalus Durissus Terrificus
      Murakami, M.T., Watanabe, L., Gava, L.M., Zela, S.P., Cintra, A.C.O., Arni, R.K.
      (2003) Acta Crystallogr D Biol Crystallogr 59: 1813

    Organizational Affiliation

    Department of Physics, IBILCE/UNESP, R. Cristovão Colombo 2265, CEP 15054-000, São Josédo Rio Preto-SP, Brazil.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CONVULXIN ALPHA
A, B
135Crotalus durissus terrificusMutation(s): 0 
Find proteins for O93426 (Crotalus durissus terrificus)
Go to UniProtKB:  O93426

Find similar proteins by: Sequence  |  Structure

Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
CONVULXIN BETA
C, D
125Crotalus durissus terrificusMutation(s): 0 
Find proteins for O93427 (Crotalus durissus terrificus)
Go to UniProtKB:  O93427
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.264 
  • R-Value Work: 0.187 
  • R-Value Observed: 0.190 
  • Space Group: I 4
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 131.906α = 90
b = 131.906β = 90
c = 112.849γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-11-21
    Type: Initial release
  • Version 1.1: 2013-11-20
    Changes: Derived calculations, Non-polymer description, Other, Structure summary, Version format compliance