Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

Standalone Viewers  
Protein Workshop | Ligand Explorer

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

Biological assembly 1 assigned by authors.

Biological Assembly 2  

 3D View: Structure | Electron Density | Ligand Interaction

Standalone Viewers  
Protein Workshop | Ligand Explorer

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

Biological assembly 2 assigned by authors.

Macromolecule Content

• Total Structure Weight: 133561.27 
• Atom Count: 8399 
• Residue Count: 1152 
• Unique protein chains: 2

1Z2C

Crystal structure of mDIA1 GBD-FH3 in complex with RhoC-GMPPNP

• DOI: 10.2210/pdb1Z2C/pdb

• Classification: SIGNALING PROTEIN
• Organism(s): Mus musculus, Homo sapiens
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): 1 


• Deposited: 2005-03-08 Released: 2005-05-10 
• Deposition Author(s): Rose, R., Weyand, M., Lammers, M., Ishizaki, T., Ahmadian, M.R., Wittinghofer, A.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3 Å
• R-Value Free: 0.285 
• R-Value Work: 0.211 

Literature

Structural and mechanistic insights into the interaction between Rho and mammalian Dia.

Rose, R., Weyand, M., Lammers, M., Ishizaki, T., Ahmadian, M.R., Wittinghofer, A.

(2005) Nature 435: 513-518

• PubMed: 15864301 
• DOI: 10.1038/nature03604


• PubMed Abstract: 
  

Formins are involved in a variety of cellular processes that require the remodelling of the cytoskeleton. They contain formin homology domains FH1 and FH2, which initiate actin assembly. The Diaphanous-related formins form a subgroup that is characterized by an amino-terminal Rho GTPase-binding domain (GBD) and an FH3 domain, which bind somehow to the carboxy-terminal Diaphanous autoregulatory domain (DAD) to keep the protein in an inactive conformation. Upon binding of activated Rho proteins, the DAD is released and the ability of the formin to nucleate and elongate unbranched actin filaments is induced. Here we present the crystal structure of RhoC in complex with the regulatory N terminus of mammalian Diaphanous 1 (mDia1) containing the GBD/FH3 region, an all-helical structure with armadillo repeats. Rho uses its 'switch' regions for interacting with two subdomains of GBD/FH3. We show that the FH3 domain of mDia1 forms a stable dimer and we also identify the DAD-binding site. Although binding of Rho and DAD on the N-terminal fragment of mDia1 are mutually exclusive, their binding sites are only partially overlapping. On the basis of our results, we propose a structural model for the regulation of mDia1 by Rho and DAD.

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Related Citations: 

• The purification and crystallisation of mDia1 in complex with RhoC
  Rose, R.,Wittinghofer, A.,Weyand, M.
  (2005) Acta Crystallogr.,Sect.F 61: 225




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Organizational Affiliation: 

Max-Planck-Institute of Molecular Physiology, Department of Structural Biology, Otto-Hahn-Strasse 11, 44227 Dortmund, Germany.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Rho-related GTP-binding protein RhoC	A, C	193	Homo sapiens	Mutation(s): 1  Gene Names: RHOC (ARH9, ARHC)
Find proteins for P08134 (Homo sapiens) Go to Gene View: RHOC Go to UniProtKB:  P08134

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details
Diaphanous protein homolog 1	B, D	383	Mus musculus	Mutation(s): 0  Gene Names: Diaph1 (Diap1)
Find proteins for O08808 (Mus musculus) Go to UniProtKB:  O08808

Small Molecules

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

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3 Å
• R-Value Free: 0.285 
• R-Value Work: 0.211 
• Space Group: P 2₁ 2₁ 2

Unit Cell:

Length (Å)	Angle (°)
a = 148.640	α = 90.00
b = 85.350	β = 90.00
c = 123.380	γ = 90.00

Software Package:

Software Name	Purpose
REFMAC	refinement
XDS	data scaling
SOLVE	phasing
SHARP	phasing
ProDC	data collection

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2005-03-08 
• Released Date: 2005-05-10 
• Deposition Author(s): Rose, R., Weyand, M., Lammers, M., Ishizaki, T., Ahmadian, M.R., Wittinghofer, A.

Revision History 

• Version 1.0: 2005-05-10
  Type: Initial release
• Version 1.1: 2008-04-30
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance
• Version 1.3: 2017-10-11
  Type: Refinement description