Macromolecule Content

• Total Structure Weight: 24.49 kDa 
• Atom Count: 1710 
• Modelled Residue Count: 208 
• Deposited Residue Count: 208 
• Unique protein chains: 1

1F5X

NMR STRUCTURE OF THE Y174 AUTOINHIBITED DBL HOMOLOGY DOMAIN

• DOI: 10.2210/pdb1F5X/pdb

• Classification: SIGNALING PROTEIN
• Organism(s): Mus musculus
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2000-06-18 Released: 2000-09-15 
• Deposition Author(s): Aghazadeh, B., Rosen, M.K., Lowry, W.E., Huang, X.Y.

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Experimental Data Snapshot

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

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

• PubMed: 11007481 
• 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. 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.

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Organizational Affiliation: 

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

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
RHO-GEF VAV	A	208	Mus musculus	Mutation(s): 0  Gene Names: Vav1, Vav
Find proteins for P27870 (Mus musculus) Explore P27870  Go to UniProtKB:  P27870

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

Entry History 

Deposition Data

• Deposited Date: 2000-06-18 
• Released Date: 2000-09-15 
Deposition Author(s): Aghazadeh, B., Rosen, M.K., Lowry, W.E., Huang, X.Y.

Revision History  

• 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