1JYU

Xray Structure of Grb2 SH2 Domain

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.75 Å
  • R-Value Free: 0.287 
  • R-Value Work: 0.231 

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This is version 1.2 of the entry. See complete history. 


Literature

Crystal structures of the SH2 domain of Grb2: highlight on the binding of a new high-affinity inhibitor.

Nioche, P., Liu, W.Q., Broutin, I., Charbonnier, F., Latreille, M.T., Vidal, M., Roques, B., Garbay, C., Ducruix, A.

(2002) J Mol Biol 315: 1167-1177

  • DOI: 10.1006/jmbi.2001.5299
  • Primary Citation of Related Structures:  
    1JYU, 1JYR, 1JYQ

  • PubMed Abstract: 

    • The activation of growth factor receptors induces phosphorylation of tyrosine residues in its C-terminal part, creating binding sites for SH2 domain-containing proteins. Grb2 is a protein that recruits Sos, the exchange factor for Ras. Recruitment of Sos ...

    The activation of growth factor receptors induces phosphorylation of tyrosine residues in its C-terminal part, creating binding sites for SH2 domain-containing proteins. Grb2 is a protein that recruits Sos, the exchange factor for Ras. Recruitment of Sos allows for Ras activation and subsequent signal transmission. This promotes translocation of MAP kinases into the nucleus and activation of early transcription factors. Grb2, a 25 kDa protein, is composed of one SH2 domain surrounded by two SH3 domains. The SH2 domain of Grb2 binds to class II phosphotyrosyl peptides with the consensus sequence pYXNX. Thus, Grb2 is a good example of a bifunctional adaptor protein that brings proteins into close proximity, allowing signal transduction through proteins located in different compartments. To explore the interactions between Grb2 and phosphorylated ligands, we have solved the crystal structure of complexes between the Grb2-SH2 domain and peptides corresponding to Shc-derived sequences. Two structures are described: the Grb2-SH2 domain in complex with PSpYVNVQN at 1.5 A; and the Grb2-SH2 domain in complex with mAZ*-pY-(alphaMe)pY-N-NH2 pseudo-peptide, at 2 A. Both are compared to an unliganded SH2 structure determined at 2.7 A which, interestingly enough, forms a dimer through two swapping subdomains from two symmetry-related molecules. The nanomolar affinity of the mAZ-pY-(alphaMe)pY-N-NH2 pseudo-peptide for Grb2-SH2 is related to new interactions with non- conserved residues. The design of Grb2-SH2 domain inhibitors that prevent interaction with tyrosine kinase proteins or other adaptors like Shc or IRS1 should provide a means to interrupt the Ras signaling pathway. Newly synthesized pseudo-peptides exhibit nanomolar affinities for the Grb2-SH2 domain. It will then be possible to design new inhibitors with similar affinity and simpler chemical structures.

    Organizational Affiliation: 

    Laboratoire de Cristallographie et RMN biologiques; UMR 8015 CNRS, Faculté de Pharmacie, Université René Descartes, 4, Avenue de l'Observatorie, 75270 Paris cedex 06, France.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
GROWTH FACTOR RECEPTOR-BOUND PROTEIN 2 A96Homo sapiensMutation(s): 0 
Gene Names: GRB2, ASH
Find proteins for P62993 (Homo sapiens)
Explore P62993 
Go to UniProtKB:  P62993
NIH Common Fund Data Resources
PHAROS:  P62993
GTEx:  ENSG00000177885
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.75 Å
  • R-Value Free: 0.287 
  • R-Value Work: 0.231 
  • Space Group: I 4 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 81.329α = 90
b = 81.329β = 90
c = 80.697γ = 90
Software Package:
Software NamePurpose
AMoREphasing
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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View more in-depth experimental data

Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-03-13
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Derived calculations, Version format compliance