Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

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Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Hetero 4-mer - A2B2 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 59211.46 
• Atom Count: 4017 
• Residue Count: 508 
• Unique protein chains: 2

1S1C

Crystal structure of the complex between the human RhoA and Rho-binding domain of human ROCKI

• DOI: 10.2210/pdb1S1C/pdb

• Classification: SIGNALING PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli


• Deposited: 2004-01-06 Released: 2004-02-10 
• Deposition Author(s): Dvorsky, R., Blumenstein, L., Vetter, I.R., Ahmadian, M.R.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.6 Å
• R-Value Free: 0.257 
• R-Value Work: 0.219 

Literature

Structural Insights into the Interaction of ROCKI with the Switch Regions of RhoA.

Dvorsky, R., Blumenstein, L., Vetter, I.R., Ahmadian, M.R.

(2004) J.Biol.Chem. 279: 7098-7104

• PubMed: 14660612 
• DOI: 10.1074/jbc.M311911200


• PubMed Abstract: 
  

The Rho-ROCK pathway modulates the phosphorylation level of a variety of important signaling proteins and is thereby involved in miscellaneous cellular processes including cell migration, neurite outgrowth, and smooth muscle contraction. The observation of the involvement of the Rho-ROCK pathway in tumor invasion and in diseases such as hypertension and bronchial asthma makes it an interesting target for drug development. We herein present the crystal structure of the complex between active RhoA and the Rho-binding domain of ROCKI. The Rho-binding domain structure forms a parallel alpha-helical coiled-coil dimer and, in contrast to the published Rho-protein kinase N structure, binds exclusively to the switch I and II regions of the guanosine 5'-(beta,gamma-imido)triphosphate-bound RhoA. The switch regions of two different RhoA molecules form a predominantly hydrophobic patch, which is complementarily bound by two identical short helices of 13 residues (amino acids 998-1010). The identified ROCK-binding site of RhoA strikingly supports the assumption of a common consensus-binding site for effector recognition.

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Organizational Affiliation: 

Max-Planck-Institute fuer Molekulare Physiologie, Abteilung Strukturelle Biologie, Otto-Hahn-Strasse 11, 44227 Dortmund, Germany.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Transforming protein RhoA	A, B	183	Homo sapiens	Mutation(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
Molecule	Chains	Sequence Length	Organism	Details
Rho-associated, coiled-coil containing protein kinase 1	X, Y	71	Homo sapiens	Mutation(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

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
MG	A, B	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N
GNP	A, B	PHOSPHOAMINOPHOSPHONIC ACID-GUANYLATE ESTER C10 H17 N6 O13 P3 UQABYHGXWYXDTK-UUOKFMHZSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.6 Å
• R-Value Free: 0.257 
• R-Value Work: 0.219 
• Space Group: P 1 2₁ 1

Unit Cell:

Length (Å)	Angle (°)
a = 34.404	α = 90.00
b = 89.537	β = 91.86
c = 98.105	γ = 90.00

Software Package:

Software Name	Purpose
SCALEPACK	data scaling
CNS	refinement
DENZO	data reduction
AMoRE	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2004-01-06 
• Released Date: 2004-02-10 
• Deposition Author(s): Dvorsky, R., Blumenstein, L., Vetter, I.R., Ahmadian, M.R.

Revision History 

• Version 1.0: 2004-02-10
  Type: Initial release
• Version 1.1: 2008-04-29
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance