1LFD

CRYSTAL STRUCTURE OF THE ACTIVE RAS PROTEIN COMPLEXED WITH THE RAS-INTERACTING DOMAIN OF RALGDS


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.282 
  • R-Value Work: 0.206 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structural basis for the interaction of Ras with RalGDS.

Huang, L.Hofer, F.Martin, G.S.Kim, S.H.

(1998) Nat.Struct.Mol.Biol. 5: 422-426


  • PubMed Abstract: 
  • The Ras protein signals to a number of distinct pathways by interacting with diverse downstream effectors. Among the effectors of Ras are the Raf kinase and RalGDS, a guanine nucleotide dissociation stimulator specific for Ral. Despite the absence of ...

    The Ras protein signals to a number of distinct pathways by interacting with diverse downstream effectors. Among the effectors of Ras are the Raf kinase and RalGDS, a guanine nucleotide dissociation stimulator specific for Ral. Despite the absence of significant sequence similarities, both effectors bind directly to Ras, but with different specificities. We report here the 2.1 A crystal structure of the complex between Ras and the Ras-interacting domain (RID) of RalGDS. This structure reveals that the beta-sheet of the RID joins the switch I region of Ras to form an extended beta-sheet with a topology similar to that found in the Rap-Raf complex. However, the side chain interactions at the joining junctions of the two interacting systems and the relative orientation of the two binding domains are distinctly different. Furthermore, in the case of the Ras-RID complex a second RID molecule also interacts with a different part of the Ras molecule, the switch II region. These findings account for the cross-talk between the Ras and Ral pathways and the specificity with which Ras distinguishes the two effectors.


    Related Citations: 
    • Activated Ras Interacts with the Ral Guanine Nucleotide Dissociation Stimulator
      Hofer, F.,Fields, S.,Schneider, C.,Martin, G.S.
      (1994) Proc.Natl.Acad.Sci.USA 91: 11089
    • Erratum. Three-Dimensional Structure of the Ras-Interacting Domain of Ralgds
      Huang, L.,Weng, X.,Hofer, F.,Martin, G.S.,Kim, S.H.
      (1997) Nat.Struct.Mol.Biol. 4: 840
    • Three-Dimensional Structure of the Ras-Interacting Domain of Ralgds
      Huang, L.,Weng, X.,Hofer, F.,Martin, G.S.,Kim, S.H.
      (1997) Nat.Struct.Mol.Biol. 4: 609


    Organizational Affiliation

    Department of Chemistry and E.O. Lawrence Berkeley National Laboratory, University of California, Berkeley 94720, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
RALGDS
A, C
87Rattus norvegicusGene Names: Ralgds
Find proteins for Q03386 (Rattus norvegicus)
Go to UniProtKB:  Q03386
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
RAS
B, D
167Homo sapiensMutations: E31K
Gene Names: HRAS (HRAS1)
Find proteins for P01112 (Homo sapiens)
Go to Gene View: HRAS
Go to UniProtKB:  P01112
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MG
Query on MG

Download SDF File 
Download CCD File 
B, D
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
GNP
Query on GNP

Download SDF File 
Download CCD File 
B, D
PHOSPHOAMINOPHOSPHONIC ACID-GUANYLATE ESTER
C10 H17 N6 O13 P3
UQABYHGXWYXDTK-UUOKFMHZSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.282 
  • R-Value Work: 0.206 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 75.648α = 90.00
b = 78.256β = 90.00
c = 87.313γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
X-PLORrefinement
EPMRphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1999-05-04
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2018-03-14
    Type: Database references