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NMR STRUCTURE OF THE COMPLEX BETWEEN THE C32S-Y7V MUTANT OF THE NSH3 DOMAIN OF GRB2 WITH A PEPTIDE FROM SOS, 10 STRUCTURES


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 10 
  • Selection Criteria: BEST ENERGY, LEAST RESTRAINT VIOLATION 

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This is version 1.2 of the entry. See complete history

Literature

Molecular and cellular analysis of Grb2 SH3 domain mutants: interaction with Sos and dynamin.

Vidal, M.Goudreau, N.Cornille, F.Cussac, D.Gincel, E.Garbay, C.

(1999) J.Mol.Biol. 290: 717-730

  • DOI: 10.1006/jmbi.1999.2899

  • PubMed Abstract: 
  • Quantitative analysis of Grb2/dynamin interaction through plasmon resonance analysis (BIAcore) using Grb2 mutants showed that the high affinity measured between Grb2 and dynamin is essentially mediated by the N-SH3 domain of Grb2. In order to study t ...

    Quantitative analysis of Grb2/dynamin interaction through plasmon resonance analysis (BIAcore) using Grb2 mutants showed that the high affinity measured between Grb2 and dynamin is essentially mediated by the N-SH3 domain of Grb2. In order to study the interactions between Grb2 and either dynamin or Sos in more detail, Grb2 N-SH3 domains containing different mutations have been analysed. Two mutations were located on the hydrophobic platform binding proline-rich peptides (Y7V and P49L) and one (E40T) located in a region that we had previously shown to be essential for Grb2/dynamin interactions. Through NMR analysis, we have clearly demonstrated that the structure of the P49L mutant is not folded, while the other E40T and Y7V mutants adopt folded structures that are quite similar to that described for the reference domain. Nevertheless, these point mutations were shown to alter the overall stability of these domains by inducing an equilibrium between a folded and an unfolded form. The complex formed between the peptide VPPPVPPRRR, derived from Sos, and the E40T mutant was shown to have the same 3D structure as that described for the wild-type SH3 domain. However, the VPPPVPPRRR peptide adopts a slightly different orientation when it is complexed with the Y7V mutant. Finally, the affinity of the proline-rich peptide GPPPQVPSRPNR, derived from dynamin, for the Grb2 N-SH3 domain was too low to be analyzed by NMR. Thus, the interaction between either Sos or dynamin and the SH3 mutants were tested on a cellular homogenate by means of a far-Western blot analysis. In these conditions, the P49L mutant was shown to be devoid of affinity for Sos as well as for dynamin. The Y7V SH3 mutant displayed a decrease of affinity for both Sos and dynamin, while the E40T mutant exhibited a decrease of affinity only for dynamin. These results support the existence of two binding sites between dynamin and the Grb2 N-SH3 domain.


    Related Citations: 
    • NMR Structure of the N-Terminal SH3 Domain of Grb2 and its Complex with a Proline-Rich Peptide from SOS
      Goudreau, N.,Cornille, F.,Duchesne, M.,Parker, F.,Tocque, B.,Garbay, C.,Roques, B.P.
      (1994) Nat.Struct.Mol.Biol. 1: 898


    Organizational Affiliation

    Université René Descartes-UFR des Sciences Pharmaceutiques et Biologiques, U266 INSERM-UMR 8600 CNRS, 4, Avenue de l'Observatoire, Paris Cedex 06, 75270, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
GRB2
A
56Homo sapiensGene Names: GRB2 (ASH)
Find proteins for P62993 (Homo sapiens)
Go to Gene View: GRB2
Go to UniProtKB:  P62993
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
SOS
B
10Drosophila melanogasterGene Names: Sos
Find proteins for P26675 (Drosophila melanogaster)
Go to UniProtKB:  P26675
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 10 
  • Selection Criteria: BEST ENERGY, LEAST RESTRAINT VIOLATION 
  • Olderado: 1AZE Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1999-05-18
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance