Biological Assembly 1  

 3D View: Structure

Global Symmetry: Helical - H  (3D View)
Global Stoichiometry: Hetero 20-mer - A10B10 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 541.23 kDa 
• Atom Count: 37910 
• Residue Count: 4830 
• Unique protein chains: 2

3LUE

Model of alpha-actinin CH1 bound to F-actin

• DOI: 10.2210/pdb3LUE/pdb
• EMDataResource: EMD-5170

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


• Deposited: 2010-02-17 Released: 2010-04-28 
• Deposition Author(s): Galkin, V.E., Orlova, A., Salmazo, A., Djinovic-Carugo, K., Egelman, E.H.

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 15.0 Å
• Aggregation State: FILAMENT 
• Reconstruction Method: HELICAL 

Literature

Opening of tandem calponin homology domains regulates their affinity for F-actin.

Galkin, V.E., Orlova, A., Salmazo, A., Djinovic-Carugo, K., Egelman, E.H.

(2010) Nat Struct Mol Biol 17: 614-616

• PubMed: 20383143 
• DOI: 10.1038/nsmb.1789
• Primary Citation of Related Structures:  
  3LUE


• PubMed Abstract: 
  

Many actin-binding proteins contain calponin homology (CH) domains, but the manner in which these domains interact with F-actin has been controversial. Crystal structures have shown the tandem CH domains of alpha-actinin to be in a compact, closed conformation, but the interpretations of complexes of such tandem CH domains with F-actin have been ambiguous. We show that the tandem CH domains of alpha-actinin bind F-actin in an open conformation, explaining mutations that cause human diseases and suggesting that the opening of these domains may be one of the main regulatory mechanisms for proteins with tandem CH domains.

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Organizational Affiliation: 

Department of Biochemistry and Molecular Genetics, University of Virginia Medical Center, Charlottesville, Virginia, USA.

Macromolecules

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Alpha-actinin-3	K, L, M, N, O, P, Q, R, S, T	109	Homo sapiens	Mutation(s): 0  Gene Names: ACTN3
Find proteins for Q08043 (Homo sapiens) Explore Q08043  Go to UniProtKB:  Q08043
NIH Common Fund Data Resources
PHAROS  Q08043 GTEx  ENSG00000248746

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Actin, cytoplasmic 1	A, B, C, D, E, F, G, H, I, J	374	Homo sapiens	Mutation(s): 0  Gene Names: ACTB
Find proteins for P60709 (Homo sapiens) Explore P60709  Go to UniProtKB:  P60709
NIH Common Fund Data Resources
PHAROS  P60709 GTEx  ENSG00000075624

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 15.0 Å
• Aggregation State: FILAMENT 
• Reconstruction Method: HELICAL 

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2010-02-17 
• Released Date: 2010-04-28 
Deposition Author(s): Galkin, V.E., Orlova, A., Salmazo, A., Djinovic-Carugo, K., Egelman, E.H.

Revision History 

• Version 1.0: 2010-04-28
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2018-07-18
  Changes: Author supporting evidence, Data collection