2F2U

crystal structure of the Rho-kinase kinase domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.195 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Molecular mechanism for the regulation of rho-kinase by dimerization and its inhibition by fasudil

Yamaguchi, H.Kasa, M.Amano, M.Kaibuchi, K.Hakoshima, T.

(2006) Structure 14: 589-600

  • DOI: 10.1016/j.str.2005.11.024

  • PubMed Abstract: 
  • Rho-kinase is a key regulator of cytoskeletal events and a promising drug target in the treatment of vascular diseases and neurological disorders. Unlike other protein kinases, Rho-kinase requires both N- and C-terminal extension segments outside the ...

    Rho-kinase is a key regulator of cytoskeletal events and a promising drug target in the treatment of vascular diseases and neurological disorders. Unlike other protein kinases, Rho-kinase requires both N- and C-terminal extension segments outside the kinase domain for activity, although the details of this requirement have been elusive. The crystal structure of an active Rho-kinase fragment containing the kinase domain and both the extensions revealed a head-to-head homodimer through the N-terminal extension forming a helix bundle that structurally integrates the C-terminal extension. This structural organization enables binding of the C-terminal hydrophobic motif to the N-terminal lobe, which defines the correct disposition of helix alphaC that is important for the catalytic activity. The bound inhibitor fasudil significantly alters the conformation and, consequently, the mode of interaction with the catalytic cleft that contains local structural changes. Thus, both kinase and drug conformational pliability and stability confer selectivity.


    Organizational Affiliation

    Structural Biology Laboratory, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara 630-0192, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Rho-associated protein kinase 2
A, B
402Bos taurusMutation(s): 0 
Gene Names: ROCK2
EC: 2.7.11.1
Find proteins for Q28021 (Bos taurus)
Go to Gene View: ROCK2
Go to UniProtKB:  Q28021
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
M77
Query on M77

Download SDF File 
Download CCD File 
A, B
5-(1,4-DIAZEPAN-1-SULFONYL)ISOQUINOLINE
Fasudil, (5-ISOQUINOLINESULFONYL)HOMOPIPERAZINE
C14 H17 N3 O2 S
NGOGFTYYXHNFQH-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
M77Kd: 78 nM (98) BINDINGDB
M77IC50: 71 - 11749 nM (98) BINDINGDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.195 
  • Space Group: P 41 21 2
Unit Cell:
Length (Å)Angle (°)
a = 102.531α = 90.00
b = 102.531β = 90.00
c = 257.185γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
PDB_EXTRACTdata extraction
MOLREPphasing
SCALEPACKdata scaling
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-04-25
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance