1SHZ

Crystal Structure of the p115RhoGEF rgRGS Domain in A Complex with Galpha(13):Galpha(i1) Chimera


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.85 Å
  • R-Value Free: 0.297 
  • R-Value Work: 0.229 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structure of the p115RhoGEF rgRGS domain-Galpha13/i1 chimera complex suggests convergent evolution of a GTPase activator.

Chen, Z.Singer, W.D.Sternweis, P.C.Sprang, S.R.

(2005) Nat.Struct.Mol.Biol. 12: 191-197

  • DOI: 10.1038/nsmb888

  • PubMed Abstract: 
  • p115RhoGEF, a guanine nucleotide exchange factor (GEF) for Rho GTPase, is also a GTPase-activating protein (GAP) for G12 and G13 heterotrimeric Galpha subunits. The GAP function of p115RhoGEF resides within the N-terminal region of p115RhoGEF (the rg ...

    p115RhoGEF, a guanine nucleotide exchange factor (GEF) for Rho GTPase, is also a GTPase-activating protein (GAP) for G12 and G13 heterotrimeric Galpha subunits. The GAP function of p115RhoGEF resides within the N-terminal region of p115RhoGEF (the rgRGS domain), which includes a module that is structurally similar to RGS (regulators of G-protein signaling) domains. We present here the crystal structure of the rgRGS domain of p115RhoGEF in complex with a chimera of Galpha13 and Galphai1. Two distinct surfaces of rgRGS interact with Galpha. The N-terminal betaN-alphaN hairpin of rgRGS, rather than its RGS module, forms intimate contacts with the catalytic site of Galpha. The interface between the RGS module of rgRGS and Galpha is similar to that of a Galpha-effector complex, suggesting a role for the rgRGS domain in the stimulation of the GEF activity of p115RhoGEF by Galpha13.


    Organizational Affiliation

    Department of Biochemistry, The University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, Texas 75390, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Guanine Nucleotide-Binding Protein Galpha(13):Galpha(i1) Chimera
A, D
340Rattus norvegicusMus musculus
This entity is chimeric
Mutation(s): 0 
Gene Names: Gnai1 (Gnai-1), Gna13 (Gna-13)
Find proteins for P10824 (Rattus norvegicus)
Go to UniProtKB:  P10824
Find proteins for P27601 (Mus musculus)
Go to UniProtKB:  P27601
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Rho guanine nucleotide exchange factor 1
C, F
233Homo sapiensMutation(s): 0 
Gene Names: ARHGEF1
Find proteins for Q92888 (Homo sapiens)
Go to Gene View: ARHGEF1
Go to UniProtKB:  Q92888
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GDP
Query on GDP

Download SDF File 
Download CCD File 
A, D
GUANOSINE-5'-DIPHOSPHATE
C10 H15 N5 O11 P2
QGWNDRXFNXRZMB-UUOKFMHZSA-N
 Ligand Interaction
ALF
Query on ALF

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Download CCD File 
A, D
TETRAFLUOROALUMINATE ION
Al F4
UYOMQIYKOOHAMK-UHFFFAOYSA-J
 Ligand Interaction
MG
Query on MG

Download SDF File 
Download CCD File 
A, D
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.85 Å
  • R-Value Free: 0.297 
  • R-Value Work: 0.229 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 199.747α = 90.00
b = 105.274β = 96.91
c = 71.748γ = 90.00
Software Package:
Software NamePurpose
AMoREphasing
HKL-2000data reduction
CNSrefinement
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-01-18
    Type: Initial release
  • Version 1.1: 2008-04-29
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-08-02
    Type: Source and taxonomy