3LUE

Model of alpha-actinin CH1 bound to F-actin

Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 15 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: HELICAL 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history. 

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

  • DOI: 10.1038/nsmb.1789

  • 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 co ...

    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.

    Organizational Affiliation: 

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




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Actin, cytoplasmic 1
A, B, C, D, E, F, G, H, I, J
374Homo sapiensGene Names: ACTB
Find proteins for P60709 (Homo sapiens)
Go to Gene View: ACTB
Go to UniProtKB:  P60709
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Alpha-actinin-3
K, M, L, O, N, Q, P, S, R, T
109Homo sapiensGene Names: ACTN3
Find proteins for Q08043 (Homo sapiens)
Go to Gene View: ACTN3
Go to UniProtKB:  Q08043
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 15 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: HELICAL 

Structure Validation

View Full Validation Report or Ramachandran Plots


View more in-depth experimental data

Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-04-28
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance