2V55

Mechanism of multi-site phosphorylation from a ROCK-I:RhoE complex structure


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.705 Å
  • R-Value Free: 0.269 
  • R-Value Work: 0.238 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Mechanism of Multi-Site Phosphorylation from a Rock-I:Rhoe Complex Structure.

Komander, D.Garg, R.Wan, P.T.C.Ridley, A.J.Barford, D.

(2008) Embo J. 27: 3175

  • DOI: 10.1038/emboj.2008.226

  • PubMed Abstract: 
  • The ROCK-I serine/threonine protein kinase mediates the effects of RhoA to promote the formation of actin stress fibres and integrin-based focal adhesions. ROCK-I phosphorylates the unconventional G-protein RhoE on multiple N- and C-terminal sites. T ...

    The ROCK-I serine/threonine protein kinase mediates the effects of RhoA to promote the formation of actin stress fibres and integrin-based focal adhesions. ROCK-I phosphorylates the unconventional G-protein RhoE on multiple N- and C-terminal sites. These phosphorylation events stabilise RhoE, which functions to antagonise RhoA-induced stress fibre assembly. Here, we provide a molecular explanation for multi-site phosphorylation of RhoE from the crystal structure of RhoE in complex with the ROCK-I kinase domain. RhoE interacts with the C-lobe alphaG helix of ROCK-I by means of a novel binding site remote from its effector region, positioning its N and C termini proximal to the ROCK-I catalytic site. Disruption of the ROCK-I:RhoE interface abolishes RhoE phosphorylation, but has no effect on the ability of RhoE to disassemble stress fibres. In contrast, mutation of the RhoE effector region attenuates RhoE-mediated disruption of the actin cytoskeleton, indicating that RhoE exerts its inhibitory effects on ROCK-I through protein(s) binding to its effector region. We propose that ROCK-I phosphorylation of RhoE forms part of a feedback loop to regulate RhoA signalling.


    Organizational Affiliation

    Section of Structural Biology, The Institute of Cancer Research, Chester Beatty Laboratories, London, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
RHO-ASSOCIATED PROTEIN KINASE 1
A, C
406Homo sapiensMutation(s): 0 
Gene Names: ROCK1
EC: 2.7.11.1
Find proteins for Q13464 (Homo sapiens)
Go to Gene View: ROCK1
Go to UniProtKB:  Q13464
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
RHO-RELATED GTP-BINDING PROTEIN RHOE
B, D
200Homo sapiensMutation(s): 0 
Gene Names: RND3 (ARHE, RHO8, RHOE)
Find proteins for P61587 (Homo sapiens)
Go to Gene View: RND3
Go to UniProtKB:  P61587
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
D
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
GTP
Query on GTP

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Download CCD File 
B, D
GUANOSINE-5'-TRIPHOSPHATE
C10 H16 N5 O14 P3
XKMLYUALXHKNFT-UUOKFMHZSA-N
 Ligand Interaction
ANP
Query on ANP

Download SDF File 
Download CCD File 
A, C
PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER
C10 H17 N6 O12 P3
PVKSNHVPLWYQGJ-KQYNXXCUSA-N
 Ligand Interaction
MG
Query on MG

Download SDF File 
Download CCD File 
A, B, C, D
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.705 Å
  • R-Value Free: 0.269 
  • R-Value Work: 0.238 
  • Space Group: P 65 2 2
Unit Cell:
Length (Å)Angle (°)
a = 152.477α = 90.00
b = 152.477β = 90.00
c = 531.274γ = 120.00
Software Package:
Software NamePurpose
PHENIXrefinement
MOSFLMdata reduction
SCALAdata scaling
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-11-04
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance