Structure, sulfatide-binding properties, and inhibition of platelet aggregation by a Disabled-2-derived peptide

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation   3D Report Full Report

This is version 1.3 of the entry. See complete history


Structure, Sulfatide Binding Properties, and Inhibition of Platelet Aggregation by a Disabled-2 Protein-derived Peptide.

Xiao, S.Charonko, J.J.Fu, X.Salmanzadeh, A.Davalos, R.V.Vlachos, P.P.Finkielstein, C.V.Capelluto, D.G.

(2012) J Biol Chem 287: 37691-37702

  • DOI: https://doi.org/10.1074/jbc.M112.385609
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Disabled-2 (Dab2) targets membranes and triggers a wide range of biological events, including endocytosis and platelet aggregation. Dab2, through its phosphotyrosine-binding (PTB) domain, inhibits platelet aggregation by competing with fibrinogen for α(IIb)β(3) integrin receptor binding. We have recently shown that the N-terminal region, including the PTB domain (N-PTB), drives Dab2 to the platelet membrane surface by binding to sulfatides through two sulfatide-binding motifs, modulating the extent of platelet aggregation. The three-dimensional structure of a Dab2-derived peptide encompassing the sulfatide-binding motifs has been determined in dodecylphosphocholine micelles using NMR spectroscopy. Dab2 sulfatide-binding motif contains two helices when embedded in micelles, reversibly binds to sulfatides with moderate affinity, lies parallel to the micelle surface, and when added to a platelet mixture, reduces the number and size of sulfatide-induced aggregates. Overall, our findings identify and structurally characterize a minimal region in Dab2 that modulates platelet homotypic interactions, all of which provide the foundation for rational design of a new generation of anti-aggregatory low-molecular mass molecules for therapeutic purposes.

  • Organizational Affiliation

    Protein Signaling Domains Laboratory, Department of Biological Sciences, Virginia Tech, 1981 Kraft Dr., Rm. 2007, Blacksburg, VA 24061, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Disabled homolog 240Homo sapiensMutation(s): 0 
Gene Names: DAB2DOC2
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for P98082 (Homo sapiens)
Explore P98082 
Go to UniProtKB:  P98082
PHAROS:  P98082
GTEx:  ENSG00000153071 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP98082
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

  • Released Date: 2012-09-19 
  • Deposition Author(s): Xiao, S.

Revision History  (Full details and data files)

  • Version 1.0: 2012-09-19
    Type: Initial release
  • Version 1.1: 2012-09-26
    Changes: Database references
  • Version 1.2: 2012-11-21
    Changes: Database references
  • Version 1.3: 2023-06-14
    Changes: Data collection, Database references, Other