Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

Standalone Viewers  
Protein Workshop | Ligand Explorer

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 3-mer - ABC 

Biological assembly 1 assigned by authors and generated by PISA (software)

Biological Assembly 2  

 3D View: Structure | Electron Density | Ligand Interaction

Standalone Viewers  
Protein Workshop | Ligand Explorer

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 3-mer - ABC 

Biological assembly 2 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 209214.52 
• Atom Count: 13523 
• Residue Count: 1806 
• Unique protein chains: 3

2RGN

Crystal Structure of p63RhoGEF complex with Galpha-q and RhoA

• DOI: 10.2210/pdb2RGN/pdb

• Classification: SIGNALING PROTEIN complex
• Organism(s): Mus musculus, Rattus norvegicus, Homo sapiens
• Expression System: Trichoplusia ni, Escherichia coli


• Deposited: 2007-10-04 Released: 2008-01-15 
• Deposition Author(s): Shankaranarayanan, A., Nance, M.R., Tesmer, J.J.G.

---

Experimental Data Snapshot

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

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

• PubMed: 18096806 
• 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 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
Molecule	Chains	Sequence Length	Organism	Details
Guanine nucleotide-binding protein G(i) subunit alpha-1,Guanine nucleotide-binding protein G(q) subunit alpha	A, D	353	Mus musculus, Rattus 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
Molecule	Chains	Sequence Length	Organism	Details
Rho guanine nucleotide exchange factor 25	B, E	354	Homo sapiens	Mutation(s): 0  Gene Names: ARHGEF25 (GEFT)
Find proteins for Q86VW2 (Homo sapiens) Go to Gene View: ARHGEF25 Go to UniProtKB:  Q86VW2

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details
Transforming protein RhoA	C, F	196	Homo sapiens	Mutation(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
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
GDP	A, D	GUANOSINE-5'-DIPHOSPHATE C10 H15 N5 O11 P2 QGWNDRXFNXRZMB-UUOKFMHZSA-N
ALF	A, D	TETRAFLUOROALUMINATE ION Al F4 UYOMQIYKOOHAMK-UHFFFAOYSA-J
MG	A, D	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N

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 = 67.187	α = 80.87
b = 68.056	β = 85.16
c = 138.018	γ = 87.09

Software Package:

Software Name	Purpose
PDB_EXTRACT	data extraction
PHASER	phasing
REFMAC	refinement
HKL-2000	data collection
DENZO	data reduction
SCALEPACK	data scaling

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2007-10-04 
• Released Date: 2008-01-15 
• Deposition Author(s): Shankaranarayanan, A., Nance, M.R., Tesmer, J.J.G.

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