1QAG

Actin binding region of the dystrophin homologue utrophin

• PDB DOI:  https://doi.org/10.2210/pdb1QAG/pdb

• Classification: STRUCTURAL PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 1999-03-05 Released: 2000-01-01 
• Deposition Author(s): Keep, N.H., Winder, S.J., Moores, C.A., Walke, S., Norwood, F.L.M., Kendrick-Jones, J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.00 Å
• R-Value Free: 0.258 
• R-Value Work: 0.198 

Literature

Crystal structure of the actin-binding region of utrophin reveals a head-to-tail dimer

Keep, N.H., Winder, S.J., Moores, C.A., Walke, S., Norwood, F.L.M., Kendrick-Jones, J.

(1999) Structure 7: 1539-1546

• PubMed: 10647184 
• DOI: https://doi.org/10.1016/s0969-2126(00)88344-6
• Primary Citation of Related Structures:  
  1QAG


• PubMed Abstract: 
  

Utrophin is a large multidomain protein that belongs to a superfamily of actin-binding proteins, which includes dystrophin, alpha-actinin, beta-spectrin, fimbrin, filamin and plectin. All the members of this family contain a common actin-binding region at their N termini and perform a wide variety of roles associated with the actin cytoskeleton. Utrophin is the autosomal homologue of dystrophin, the protein defective in the X-linked Duchenne and Becker muscular dystrophies, and upregulation of utrophin has been suggested as a potential therapy for muscular dystrophy patients.

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Organizational Affiliation: 

MRC Laboratory of Molecular Biology, Cambridge, UK. [e-mail]

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Biological Assembly 2  

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

Biological assembly 2 assigned by authors.

Biological Assembly 3  

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 3 generated by PISA,PQS (software)

Macromolecule Content

• Total Structure Weight: 52.22 kDa 
• Atom Count: 3,654 
• Modelled Residue Count: 452 
• Deposited Residue Count: 452 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
UTROPHIN ACTIN BINDING REGION	A, B	226	Homo sapiens	Mutation(s): 5  Gene Names: UTRN, DMDL, DRP1
UniProt & NIH Common Fund Data Resources
Find proteins for P46939 (Homo sapiens) Explore P46939  Go to UniProtKB:  P46939
PHAROS:  P46939

Small Molecules

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MSE	A, B	L-PEPTIDE LINKING	C5 H11 N O2 Se		MET

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.00 Å
• R-Value Free: 0.258 
• R-Value Work: 0.198 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 150.145	α = 90
b = 55.16	β = 106.06
c = 80.42	γ = 90

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
SHELXS	phasing
MLPHARE	phasing
SHARP	phasing
X-PLOR	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 2000-01-01 
Deposition Author(s): Keep, N.H., Winder, S.J., Moores, C.A., Walke, S., Norwood, F.L.M., Kendrick-Jones, J.

Revision History  

• Version 1.0: 2000-01-01
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Derived calculations, Version format compliance