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: 26.23 kDa 
• Atom Count: 1905 
• Modelled Residue Count: 228 
• Deposited Residue Count: 246 
• Unique protein chains: 1

1U2C

Crystal Structure of a-dystroglycan

• PDB DOI: 10.2210/pdb1U2C/pdb

• Classification: PROTEIN BINDING
• Organism(s): Mus musculus
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2004-07-18 Released: 2004-09-07 
• Deposition Author(s): Bozic, D., Sciandra, F., Lamba, D., Brancaccio, A.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 0.262 
• R-Value Work: 0.208 
• R-Value Observed: 0.208 

Literature

The Structure of the N-terminal Region of Murine Skeletal Muscle {alpha}-Dystroglycan Discloses a Modular Architecture

Bozic, D., Sciandra, F., Lamba, D., Brancaccio, A.

(2004) J Biol Chem 279: 44812-44816

• PubMed: 15326183 
• DOI: 10.1074/jbc.C400353200
• Primary Citation of Related Structures:  
  1U2C


• PubMed Abstract: 
  

Dystroglycan (DG) is a cell surface receptor consisting of two subunits: alpha-dystroglycan, extracellular and highly glycosylated, and beta-dystroglycan, spanning the cell membrane. It is a pivotal member of the dystrophin-glycoprotein complex and is involved in a wide variety of important cellular processes such as the stabilization of the muscle fiber sarcolemma or the clustering of acetylcholine receptors. We report the 2.3-A resolution crystal structure of the murine skeletal muscle N-terminal alpha-DG region, which confirms the presence of two autonomous domains; the first finally identified as an Ig-like and the second resembling ribosomal RNA-binding proteins. Solid-phase laminin binding assays show the occurrence of protein-protein type of interactions involving the Ig-like domain of alpha-DG.

---

Organizational Affiliation: 

Biochemisches Institut der Universität Zürich, Zürich 8044, Switzerland. [e-mail]

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Dystroglycan	A	246	Mus musculus	Mutation(s): 0  Gene Names: Dag1
UniProt
Find proteins for Q62165 (Mus musculus) Explore Q62165  Go to UniProtKB:  Q62165

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 0.262 
• R-Value Work: 0.208 
• R-Value Observed: 0.208 
• Space Group: H 3

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 71.445	α = 90
b = 71.445	β = 90
c = 144.233	γ = 120

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2004-07-18 
• Released Date: 2004-09-07 
Deposition Author(s): Bozic, D., Sciandra, F., Lamba, D., Brancaccio, A.

Revision History  

• Version 1.0: 2004-09-07
  Type: Initial release
  
• Version 1.1: 2008-04-30
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance