2MP5

Structure of Bitistatin B


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 43 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

NMR structure of bitistatin - a missing piece in the evolutionary pathway of snake venom disintegrins.

Carbajo, R.J.Sanz, L.Perez, A.Calvete, J.J.

(2015) Febs J. 282: 341-360

  • DOI: 10.1111/febs.13138
  • Primary Citation of Related Structures:  2MOP

  • PubMed Abstract: 
  • Extant disintegrins, as found in the venoms of Viperidae and Crotalidae snakes (vipers and rattlesnakes, represent a family of polypeptides that block the function of β1 and β3 integrin receptors, both potently and with a high degree of selectivity. ...

    Extant disintegrins, as found in the venoms of Viperidae and Crotalidae snakes (vipers and rattlesnakes, represent a family of polypeptides that block the function of β1 and β3 integrin receptors, both potently and with a high degree of selectivity. This toxin family owes its origin to the neofunctionalization of the extracellular region of an ADAM (a disintegrin and metalloprotease) molecule recruited into the snake venom gland proteome in the Jurassic. The evolutionary structural diversification of the disintegrin scaffold, from the ancestral long disintegrins to the more recently evolved medium-sized, dimeric and short disintegrins, involved the stepwise loss of pairs of class-specific disulfide linkages and the processing of the N-terminal region. NMR and crystal structures of medium-sized, dimeric and short disintegrins have been solved. However, the structure of a long disintegrin remained unknown. The present study reports the NMR solution structures of two disulfide bond conformers of the long disintegrin bitistatin from the African puff adder Bitis arietans. The findings provide insight into how a structural domain of the extracellular region of an ADAM molecule, recruited into and selectively expressed in the snake venom gland proteome as a PIII metalloprotease in the Jurassic, has subsequently been tranformed into a family of integrin receptor antagonists.


    Organizational Affiliation

    Laboratory of Structural Biochemistry, Centro de Investigación Príncipe Felipe, Valencia, Spain.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Disintegrin bitistatin
1
83Bitis arietansN/A
Find proteins for P17497 (Bitis arietans)
Go to UniProtKB:  P17497
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 43 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-11-12
    Type: Initial release
  • Version 1.1: 2015-02-25
    Type: Database references