Biological Assembly 1  

 3D View: Structure | 1D-3D View | Validation Report

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 31.59 kDa 
• Atom Count: 2478 
• Modelled Residue Count: 273 
• Deposited Residue Count: 276 
• Unique protein chains: 2

1EG4

STRUCTURE OF A DYSTROPHIN WW DOMAIN FRAGMENT IN COMPLEX WITH A BETA-DYSTROGLYCAN PEPTIDE

• PDB DOI: 10.2210/pdb1EG4/pdb

• Classification: STRUCTURAL PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2000-02-11 Released: 2000-08-23 
• Deposition Author(s): Huang, X., Poy, F., Zhang, R., Joachimiak, A., Sudol, M., Eck, M.J.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.249 
• R-Value Work: 0.197 

Literature

Structure of a WW domain containing fragment of dystrophin in complex with beta-dystroglycan.

Huang, X., Poy, F., Zhang, R., Joachimiak, A., Sudol, M., Eck, M.J.

(2000) Nat Struct Biol 7: 634-638

• PubMed: 10932245 
• DOI: 10.1038/77923
• Primary Citation of Related Structures:  
  1EG3, 1EG4


• PubMed Abstract: 
  

Dystrophin and beta-dystroglycan are components of the dystrophin-glycoprotein complex (DGC), a multimolecular assembly that spans the cell membrane and links the actin cytoskeleton to the extracellular basal lamina. Defects in the dystrophin gene are the cause of Duchenne and Becker muscular dystrophies. The C-terminal region of dystrophin binds the cytoplasmic tail of beta-dystroglycan, in part through the interaction of its WW domain with a proline-rich motif in the tail of beta-dystroglycan. Here we report the crystal structure of this portion of dystrophin in complex with the proline-rich binding site in beta-dystroglycan. The structure shows that the dystrophin WW domain is embedded in an adjacent helical region that contains two EF-hand-like domains. The beta-dystroglycan peptide binds a composite surface formed by the WW domain and one of these EF-hands. Additionally, the structure reveals striking similarities in the mechanisms of proline recognition employed by WW domains and SH3 domains.

---

Organizational Affiliation: 

Department of Cancer Biology, Dana Farber Cancer Institute, 44 Binney Street, Boston, Massachusetts 02115, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
BETA-DYSTROGLYCAN	A [auth P]	15	N/A	Mutation(s): 0
UniProt & NIH Common Fund Data Resources
Find proteins for Q14118 (Homo sapiens) Explore Q14118  Go to UniProtKB:  Q14118
PHAROS:  Q14118

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
DYSTROPHIN	B [auth A]	261	Homo sapiens	Mutation(s): 0  Gene Names: DMD
UniProt & NIH Common Fund Data Resources
Find proteins for P11532 (Homo sapiens) Explore P11532  Go to UniProtKB:  P11532
PHAROS:  P11532

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.249 
• R-Value Work: 0.197 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 48.68	α = 90
b = 67.05	β = 90
c = 83.84	γ = 90

Software Package:

Software Name	Purpose
DM	model building
X-PLOR	refinement
DENZO	data reduction
SCALEPACK	data scaling
DM	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2000-02-11 
• Released Date: 2000-08-23 
Deposition Author(s): Huang, X., Poy, F., Zhang, R., Joachimiak, A., Sudol, M., Eck, M.J.

Revision History  

• Version 1.0: 2000-08-23
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance