1F5X

NMR STRUCTURE OF THE Y174 AUTOINHIBITED DBL HOMOLOGY DOMAIN


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 20 
  • Conformers Submitted: 20 
  • Selection Criteria: all calculated structures submitted 

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This is version 1.2 of the entry. See complete history


Literature

Structural basis for relief of autoinhibition of the Dbl homology domain of proto-oncogene Vav by tyrosine phosphorylation.

Aghazadeh, B.Lowry, W.E.Huang, X.Y.Rosen, M.K.

(2000) Cell 102: 625-633

  • DOI: 10.1016/s0092-8674(00)00085-4
  • Primary Citation of Related Structures:  
    1F5X

  • PubMed Abstract: 
  • Rho-family GTPases transduce signals from receptors leading to changes in cell shape and motility, mitogenesis, and development. Proteins containing the Dbl homology (DH) domain are responsible for activating Rho GTPases by catalyzing the exchange of GDP for GTP ...

    Rho-family GTPases transduce signals from receptors leading to changes in cell shape and motility, mitogenesis, and development. Proteins containing the Dbl homology (DH) domain are responsible for activating Rho GTPases by catalyzing the exchange of GDP for GTP. Receptor-initiated stimulation of Dbl protein Vav exchange activity involves tyrosine phosphorylation. We show through structure determination that the mVav1 DH domain is autoinhibited by an N-terminal extension, which lies in the GTPase interaction site. This extension contains the Tyr174 Src-family kinase recognition site, and phosphorylation or truncation of this peptide results in stimulation of GEF activity. NMR spectroscopy data show that the N-terminal peptide is released from the DH domain and becomes unstructured upon phosphorylation. Thus, tyrosine phosphorylation relieves autoinhibition by exposing the GTPase interaction surface of the DH domain, which is obligatory for Vav activation.


    Organizational Affiliation

    Cellular Biochemistry and Biophysics Program, Memorial Sloan-Kettering Cancer Center, New York, New York 10021, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
RHO-GEF VAV A208Mus musculusMutation(s): 0 
Gene Names: Vav1Vav
Find proteins for P27870 (Mus musculus)
Explore P27870 
Go to UniProtKB:  P27870
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 20 
  • Conformers Submitted: 20 
  • Selection Criteria: all calculated structures submitted 
  • OLDERADO: 1F5X Olderado

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2000-09-15
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance