1LB1

Crystal Structure of the Dbl and Pleckstrin homology domains of Dbs in complex with RhoA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.81 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.236 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural basis for the selective activation of Rho GTPases by Dbl exchange factors.

Snyder, J.T.Worthylake, D.K.Rossman, K.L.Betts, L.Pruitt, W.M.Siderovski, D.P.Der, C.J.Sondek, J.

(2002) Nat.Struct.Mol.Biol. 9: 468-475

  • DOI: 10.1038/nsb796
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Activation of Rho-family GTPases involves the removal of bound GDP and the subsequent loading of GTP, all catalyzed by guanine nucleotide exchange factors (GEFs) of the Dbl-family. Despite high sequence conservation among Rho GTPases, Dbl proteins po ...

    Activation of Rho-family GTPases involves the removal of bound GDP and the subsequent loading of GTP, all catalyzed by guanine nucleotide exchange factors (GEFs) of the Dbl-family. Despite high sequence conservation among Rho GTPases, Dbl proteins possess a wide spectrum of discriminatory potentials for Rho-family members. To rationalize this specificity, we have determined crystal structures of the conserved, catalytic fragments (Dbl and pleckstrin homology domains) of the exchange factors intersectin and Dbs in complex with their cognate GTPases, Cdc42 and RhoA, respectively. Structure-based mutagenesis of intersectin and Dbs reveals the key determinants responsible for promoting exchange activity in Cdc42, Rac1 and RhoA. These findings provide critical insight into the structural features necessary for the proper pairing of Dbl-exchange factors with Rho GTPases and now allow for the detailed manipulation of signaling pathways mediated by these oncoproteins in vivo.


    Organizational Affiliation

    Department of Biochemistry and Biophysics, Program in Molecular and Cellular Biophysics, Chapel Hill, North Carolina 27599, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Guanine nucleotide exchange factor DBS
A, C, E, G
353Mus musculusMutation(s): 0 
Gene Names: Mcf2l (Dbs)
Find proteins for Q64096 (Mus musculus)
Go to UniProtKB:  Q64096
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Transforming protein RhoA
B, D, F, H
192Homo sapiensMutation(s): 1 
Gene Names: RHOA (ARH12, ARHA, RHO12)
Find proteins for P61586 (Homo sapiens)
Go to Gene View: RHOA
Go to UniProtKB:  P61586
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.81 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.236 
  • Space Group: P 43
Unit Cell:
Length (Å)Angle (°)
a = 158.897α = 90.00
b = 158.897β = 90.00
c = 151.791γ = 90.00
Software Package:
Software NamePurpose
AMoREphasing
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-05-29
    Type: Initial release
  • Version 1.1: 2008-04-28
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance