2D0N

Crystal structure of the C-terminal SH3 domain of the adaptor protein GADS in complex with SLP-76 motif peptide reveals a unique SH3-SH3 interaction


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.57 Å
  • R-Value Free: 0.284 
  • R-Value Work: 0.221 
  • R-Value Observed: 0.221 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Crystal structure of the C-terminal SH3 domain of the adaptor protein GADS in complex with SLP-76 motif peptide reveals a unique SH3-SH3 interaction

Dimasi, N.

(2007) Int J Biochem Cell Biol 39: 109-123

  • DOI: https://doi.org/10.1016/j.biocel.2006.07.003
  • Primary Citation of Related Structures:  
    2D0N

  • PubMed Abstract: 

    The Grb2-like adaptor protein GADS is essential for tyrosine kinase-dependent signaling in T lymphocytes. Following T cell receptor ligation, GADS interacts through its C-terminal SH3 domain with the adaptors SLP-76 and LAT, to form a multiprotein signaling complex that is crucial for T cell activation. To understand the structural basis for the selective recognition of GADS by SLP-76, herein is reported the crystal structure at 1.54 Angstrom of the C-terminal SH3 domain of GADS bound to the SLP-76 motif 233-PSIDRSTKP-241, which represents the minimal binding site. In addition to the unique structural features adopted by the bound SLP-76 peptide, the complex structure reveals a unique SH3-SH3 interaction. This homophilic interaction, which is observed in presence of the SLP-76 peptide and is present in solution, extends our understanding of the molecular mechanisms that could be employed by modular proteins to increase their signaling transduction specificity.


  • Organizational Affiliation

    Laboratory for Molecular Medicine, Istituto Giannina Gaslini, Largo Gerolamo Gaslini 5, Genova 16147, Italy. ndimasi@gmail.com


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
GRB2-related adaptor protein 2
A, C
59Mus musculusMutation(s): 0 
UniProt
Find proteins for O89100 (Mus musculus)
Explore O89100 
Go to UniProtKB:  O89100
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO89100
Sequence Annotations
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  • Reference Sequence

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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
SLP-76 binding peptide
B, D
9N/AMutation(s): 0 
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.57 Å
  • R-Value Free: 0.284 
  • R-Value Work: 0.221 
  • R-Value Observed: 0.221 
  • Space Group: P 42 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 58.622α = 90
b = 58.622β = 90
c = 74.098γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
SCALEPACKdata scaling
PHASERphasing
REFMACrefinement
HKL-2000data reduction

Structure Validation

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Entry History 

Deposition Data

  • Released Date: 2005-08-23 
  • Deposition Author(s): Dimasi, N.

Revision History  (Full details and data files)

  • Version 1.0: 2005-08-23
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2023-10-25
    Changes: Data collection, Database references, Refinement description