2RGN

Crystal Structure of p63RhoGEF complex with Galpha-q and RhoA

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.50 Å
  • R-Value Free: 0.299 
  • R-Value Work: 0.243 

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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
  • Primary Citation of Related Structures:  
    2RGN

  • 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 ...

    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
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Guanine nucleotide-binding protein G(i) subunit alpha-1,Guanine nucleotide-binding protein G(q) subunit alphaA, D353Rattus norvegicus, Mus musculus
This entity is chimeric		Mutation(s): 0 
Gene Names: Gnai1, Gnai-1, Gnaq
UniProt
Find proteins for P10824 (Rattus norvegicus)
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Go to UniProtKB:  P10824
Find proteins for P21279 (Mus musculus)
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Go to UniProtKB:  P21279
Entity Groups  
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UniProt GroupsP10824P21279
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Rho guanine nucleotide exchange factor 25B, E354Homo sapiensMutation(s): 0 
Gene Names: ARHGEF25, GEFT
UniProt & NIH Common Fund Data Resources
Find proteins for Q86VW2 (Homo sapiens)
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Go to UniProtKB:  Q86VW2
PHAROS:  Q86VW2
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UniProt GroupQ86VW2
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Transforming protein RhoAC, F196Homo sapiensMutation(s): 0 
Gene Names: RHOA, ARH12, ARHA, RHO12
EC: 3.6.5.2
UniProt & NIH Common Fund Data Resources
Find proteins for P61586 (Homo sapiens)
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Go to UniProtKB:  P61586
PHAROS:  P61586
Entity Groups  
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UniProt GroupP61586
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GDP
Query on GDP
Download Ideal Coordinates CCD File 
I [auth A],
L [auth D]		GUANOSINE-5'-DIPHOSPHATE
C10 H15 N5 O11 P2
QGWNDRXFNXRZMB-UUOKFMHZSA-N		 Ligand Interaction
ALF
Query on ALF
Download Ideal Coordinates CCD File 
G [auth A],
J [auth D]		TETRAFLUOROALUMINATE ION
Al F4
UYOMQIYKOOHAMK-UHFFFAOYSA-J		 Ligand Interaction
MG
Query on MG
Download Ideal Coordinates CCD File 
H [auth A],
K [auth D]		MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.50 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
DENZOdata reduction
SCALEPACKdata scaling
PHASERphasing
REFMACrefinement
PDB_EXTRACTdata extraction
HKL-2000data collection

Structure Validation

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Ligand Structure Quality Assessment 


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Entry History 

Deposition Data

Revision History  (Full details and data files)

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