2RGN

Crystal Structure of p63RhoGEF complex with Galpha-q and RhoA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.5 Å
  • R-Value Free: 0.299 
  • R-Value Work: 0.243 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history

Literature

Structure of Galphaq-p63RhoGEF-RhoA complex reveals a pathway for the activation of RhoA by GPCRs.

Lutz, S.Shankaranarayanan, A.Coco, C.Ridilla, M.Nance, M.R.Vettel, C.Baltus, D.Evelyn, C.R.Neubig, R.R.Wieland, T.Tesmer, J.J.

(2007) Science 318: 1923-1927

  • DOI: 10.1126/science.1147554

  • PubMed Abstract: 
  • The guanine nucleotide exchange factor p63RhoGEF is an effector of the heterotrimeric guanine nucleotide-binding protein (G protein) Galphaq and thereby links Galphaq-coupled receptors (GPCRs) to the activation of the small-molecular-weight G protein ...

    The guanine nucleotide exchange factor p63RhoGEF is an effector of the heterotrimeric guanine nucleotide-binding protein (G protein) Galphaq and thereby links Galphaq-coupled receptors (GPCRs) to the activation of the small-molecular-weight G protein RhoA. We determined the crystal structure of the Galphaq-p63RhoGEF-RhoA complex, detailing the interactions of Galphaq with the Dbl and pleckstrin homology (DH and PH) domains of p63RhoGEF. These interactions involve the effector-binding site and the C-terminal region of Galphaq and appear to relieve autoinhibition of the catalytic DH domain by the PH domain. Trio, Duet, and p63RhoGEF are shown to constitute a family of Galphaq effectors that appear to activate RhoA both in vitro and in intact cells. We propose that this structure represents the crux of an ancient signal transduction pathway that is expected to be important in an array of physiological processes.


    Organizational Affiliation

    Institute of Experimental and Clinical Pharmacology and Toxicology, Medical Faculty Mannheim, University of Heidelberg, Maybachstrasse 14, D-68169 Mannheim, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Guanine nucleotide-binding protein G(i) subunit alpha-1,Guanine nucleotide-binding protein G(q) subunit alpha
A, D
353Mus musculusRattus norvegicus
This entity is chimeric
Mutation(s): 0 
Gene Names: Gnaq, Gnai1 (Gnai-1)
Find proteins for P21279 (Mus musculus)
Go to UniProtKB:  P21279
Find proteins for P10824 (Rattus norvegicus)
Go to UniProtKB:  P10824
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Rho guanine nucleotide exchange factor 25
B, E
354Homo sapiensMutation(s): 0 
Gene Names: ARHGEF25 (GEFT)
Find proteins for Q86VW2 (Homo sapiens)
Go to Gene View: ARHGEF25
Go to UniProtKB:  Q86VW2
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Transforming protein RhoA
C, F
196Homo sapiensMutation(s): 0 
Gene Names: RHOA (ARH12, ARHA, RHO12)
Find proteins for P61586 (Homo sapiens)
Go to Gene View: RHOA
Go to UniProtKB:  P61586
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

Download SDF File 
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: 3.5 Å
  • R-Value Free: 0.299 
  • R-Value Work: 0.243 
  • Space Group: P 1
Unit Cell:
Length (Å)Angle (°)
a = 67.187α = 80.87
b = 68.056β = 85.16
c = 138.018γ = 87.09
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
PHASERphasing
REFMACrefinement
HKL-2000data collection
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-01-15
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Advisory, Refinement description, Version format compliance
  • Version 1.2: 2017-06-07
    Type: Database references, Structure summary
  • Version 1.3: 2017-10-25
    Type: Refinement description
  • Version 1.4: 2018-01-24
    Type: Refinement description