4F38

Crystal structure of geranylgeranylated RhoA in complex with RhoGDI in its active GPPNHP-bound form


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.281 
  • R-Value Work: 0.202 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Quantitative Analysis of Prenylated RhoA Interaction with Its Chaperone, RhoGDI.

Tnimov, Z.Guo, Z.Gambin, Y.Nguyen, U.T.Wu, Y.W.Abankwa, D.Stigter, A.Collins, B.M.Waldmann, H.Goody, R.S.Alexandrov, K.

(2012) J.Biol.Chem. 287: 26549-26562

  • DOI: 10.1074/jbc.M112.371294

  • PubMed Abstract: 
  • Small GTPases of the Rho family regulate cytoskeleton remodeling, cell polarity, and transcription, as well as the cell cycle, in eukaryotic cells. Membrane delivery and recycling of the Rho GTPases is mediated by Rho GDP dissociation inhibitor (RhoG ...

    Small GTPases of the Rho family regulate cytoskeleton remodeling, cell polarity, and transcription, as well as the cell cycle, in eukaryotic cells. Membrane delivery and recycling of the Rho GTPases is mediated by Rho GDP dissociation inhibitor (RhoGDI), which forms a stable complex with prenylated Rho GTPases. We analyzed the interaction of RhoGDI with the active and inactive forms of prenylated and unprenylated RhoA. We demonstrate that RhoGDI binds the prenylated form of RhoA·GDP with unexpectedly high affinity (K(d) = 5 pm). The very long half-life of the complex is reduced 25-fold on RhoA activation, with a concomitant reduction in affinity (K(d) = 3 nm). The 2.8-Å structure of the RhoA·guanosine 5'-[β,γ-imido] triphosphate (GMPPNP)·RhoGDI complex demonstrated that complex formation forces the activated RhoA into a GDP-bound conformation in the absence of nucleotide hydrolysis. We demonstrate that membrane extraction of Rho GTPase by RhoGDI is a thermodynamically favored passive process that operates through a series of progressively tighter intermediates, much like the one that is mediated by RabGDI.


    Organizational Affiliation

    Department of Molecular Cell Biology, Institute for Molecular Bioscience, The University of Queensland, 306 Carmody Road, St. Lucia, Queensland 4072, Australia.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Transforming protein RhoA
A
195Mus musculusMutation(s): 0 
Gene Names: Rhoa (Arha, Arha2)
Find proteins for Q9QUI0 (Mus musculus)
Go to UniProtKB:  Q9QUI0
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Rho GDP-dissociation inhibitor 1
B
204Mus musculusMutation(s): 0 
Gene Names: Arhgdia (C87222, Gdi1)
Find proteins for Q99PT1 (Mus musculus)
Go to UniProtKB:  Q99PT1
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MG
Query on MG

Download SDF File 
Download CCD File 
A
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
GER
Query on GER

Download SDF File 
Download CCD File 
A
GERAN-8-YL GERAN
C20 H34
HSOYJGBJQAKCNA-CAIKYXSQSA-N
 Ligand Interaction
GNP
Query on GNP

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

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.281 
  • R-Value Work: 0.202 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 46.000α = 90.00
b = 71.576β = 90.00
c = 136.030γ = 90.00
Software Package:
Software NamePurpose
XSCALEdata scaling
REFMACrefinement
PHASESphasing
ADSCdata collection
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-05-23
    Type: Initial release
  • Version 1.1: 2012-08-15
    Type: Database references