1CVO

THE SOLUTION STRUCTURE OF CARDIOTOXIN V FROM NAJA NAJA ATRA


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Submitted: 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Solution structure of cardiotoxin V from Naja naja atra.

Singhal, A.K.Chien, K.Y.Wu, W.G.Rule, G.S.

(1993) Biochemistry 32: 8036-8044


  • PubMed Abstract: 
  • Cardiotoxins are small proteins that are found in the venoms of snakes from the Elapidae family. These toxins are known to bind to and disrupt the organization, integrity, and function of the cell membrane. Most of the well-studied cardiotoxins cause ...

    Cardiotoxins are small proteins that are found in the venoms of snakes from the Elapidae family. These toxins are known to bind to and disrupt the organization, integrity, and function of the cell membrane. Most of the well-studied cardiotoxins cause depolarization of membrane potentials and/or lysis of red cells. In contrast, CTX V from Naja naja atra displays poor hemolytic activity but is proficient at inducing aggregation and fusion of sphingomyelin vesicles [Chien et al. (1991) J. Biol. Chem. 266, 3252-3259]. To determine whether the unique activity of this CTX is attributable to its tertiary structure, the solution structure of CTX V was determined by NMR methods. On the basis of these studies, this cardiotoxin has the same general topology as other members of the family, and thus its unusual properties do not arise from any gross structural differences that are detectable by solution NMR methods. Molecular dynamics calculations indicate that residues 36-50 show concerted fluctuations. On the basis of sequence similarity, we postulate that residues 30-34 are important in determining the specificity of cardiotoxins for fusion versus lysis of vesicles.


    Related Citations: 
    • Fusion of Sphingomyelin Vesicles Induced by Proteins from Taiwan Cobra (Naja Naja Atra) Venom
      Chien, K.-Y.,Huang, W.-N.,Jean, J.-H.,Wu, W.-G.
      (1991) J.Biol.Chem. 266: 3252


    Organizational Affiliation

    Department of Biochemistry, University of Virginia, Charlottesville 22908.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CARDIOTOXIN V
A
62Naja atraMutation(s): 0 
Find proteins for P62375 (Naja atra)
Go to UniProtKB:  P62375
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Submitted: 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1994-01-31
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-11-29
    Type: Derived calculations, Other