5FR1

Double acetylated RhoGDI-alpha in complex with RhoA-GDP


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.75 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.199 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Rhogdi Alpha Acetylation at K127 and K141 Affects Binding Towards Non-Prenylated Rhoa.

Kuhlmann, N.Wroblowski, S.Scislowski, L.Lammers, M.

(2016) Biochemistry 55: 304

  • DOI: 10.1021/acs.biochem.5b01242

  • PubMed Abstract: 
  • Rho proteins are major regulators of the cytoskeleton. As most Ras-related proteins, they switch between an active, GTP-bound and an inactive, GDP-bound conformation. Rho proteins are targeted to the plasma membrane via a polybasic region and a preny ...

    Rho proteins are major regulators of the cytoskeleton. As most Ras-related proteins, they switch between an active, GTP-bound and an inactive, GDP-bound conformation. Rho proteins are targeted to the plasma membrane via a polybasic region and a prenyl group attached to a C-terminal cysteine residue. To distribute Rho proteins in the cell, the molecular chaperone RhoGDIα binds to the prenylated Rho proteins forming a cytosolic pool of mainly GDP-loaded Rho. Most studies characterized the interaction of prenylated Rho proteins and RhoGDIα. However, RhoGDIα was also shown to bind to nonprenylated Rho proteins with physiologically relevant micomolar affinities. Recently, it was discovered that RhoGDIα is targeted by post-translational lysine acetylation. For one site, K141, it was hypothesized that acetylation might lead to increased levels of formation of filamentous actin and filopodia in mammalian cells. The functional consequences of lysine acetylation for the interplay with nonprenylated RhoA have not been investigated. Here, we report that lysine acetylation at lysines K127 and K141 in the RhoGDIα immunoglobulin domain interferes with the interaction toward nonprenylated RhoA using a combined biochemical and biophysical approach. We determined the first crystal structure of a doubly acetylated protein, RhoGDIα, in complex with RhoA·GDP. We discover that the C-terminus of RhoA adopts a different conformation forming an intermolecular β-sheet with the RhoGDIα immunoglobulin domain.


    Organizational Affiliation

    Institute for Genetics and Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), Joseph-Stelzmann-Str. 26, University of Cologne , 50931 Cologne, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
TRANSFORMING PROTEIN RHOA
A
196Homo sapiensMutation(s): 0 
Gene Names: RHOA (ARH12, ARHA, RHO12)
EC: 3.6.5.2
Find proteins for P61586 (Homo sapiens)
Go to Gene View: RHOA
Go to UniProtKB:  P61586
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
RHO GDP-DISSOCIATION INHIBITOR 1
B
213Bos taurusMutation(s): 0 
Gene Names: ARHGDIA
Find proteins for P19803 (Bos taurus)
Go to Gene View: ARHGDIA
Go to UniProtKB:  P19803
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GDP
Query on GDP

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

Download SDF File 
Download CCD File 
A, B
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
ALY
Query on ALY
B
L-PEPTIDE LINKINGC8 H16 N2 O3LYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.75 Å
  • R-Value Free: 0.256 
  • R-Value Work: 0.199 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 53.100α = 90.00
b = 67.640β = 90.00
c = 120.230γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
SCALAdata scaling
MOSFLMdata reduction
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2016-01-13
    Type: Initial release
  • Version 1.1: 2016-02-03
    Type: Database references