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 Biol 9: 468-475

  • DOI: 10.1038/nsb796
  • Primary Citation of Related Structures:  
    1KI1, 1LB1

  • 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:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Guanine nucleotide exchange factor DBSACEG353Mus musculusMutation(s): 0 
Gene Names: DbsMcf2l
Find proteins for Q64096 (Mus musculus)
Explore Q64096 
Go to UniProtKB:  Q64096
NIH Common Fund Data Resources
IMPC  MGI:103263
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Transforming protein RhoABDFH192Homo sapiensMutation(s): 1 
Gene Names: RHOAARH12ARHARHO12
EC: 3.6.5.2
Find proteins for P61586 (Homo sapiens)
Explore P61586 
Go to UniProtKB:  P61586
NIH Common Fund Data Resources
PHAROS  P61586
Protein Feature View
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  • Reference Sequence
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
b = 158.897β = 90
c = 151.791γ = 90
Software Package:
Software NamePurpose
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

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