1H67

NMR Structure of the CH Domain of Calponin


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 20 
  • Selection Criteria: LEAST RESTRAINT VIOLATION 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Solution Structure of the Calponin Ch Domain and Fitting to the 3D-Helical Reconstruction of F-Actin:Calponin.

Bramham, J.Hodgkinson, J.L.Smith, B.O.Uhrin, D.Barlow, P.N.Winder, S.J.

(2002) Structure 10: 249

  • DOI: 10.1016/s0969-2126(02)00703-7
  • Primary Citation of Related Structures:  
    1H67

  • PubMed Abstract: 
  • Calponin is involved in the regulation of contractility and organization of the actin cytoskeleton in smooth muscle cells. It is the archetypal member of the calponin homology (CH) domain family of actin binding proteins that includes cytoskeletal linkers such as alpha-actinin, spectrin, and dystrophin, and regulatory proteins including VAV, IQGAP, and calponin ...

    Calponin is involved in the regulation of contractility and organization of the actin cytoskeleton in smooth muscle cells. It is the archetypal member of the calponin homology (CH) domain family of actin binding proteins that includes cytoskeletal linkers such as alpha-actinin, spectrin, and dystrophin, and regulatory proteins including VAV, IQGAP, and calponin. We have determined the first structure of a CH domain from a single CH domain-containing protein, that of calponin, and have fitted the NMR-derived coordinates to the 3D-helical reconstruction of the F-actin:calponin complex using cryo-electron microscopy. The tertiary fold of this single CH domain is typical of, yet significantly different from, those of the CH domains that occur in tandem pairs to form high-affinity ABDs in other proteins. We thus provide a structural insight into the mode of interaction between F-actin and CH domain-containing proteins.


    Organizational Affiliation

    Department of Biochemistry, University of Leicester, Adrian Building, University Road, Leicester LE1 7RH, United Kingdom. jb139@le.ac.uk



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
CALPONIN ALPHAA108Gallus gallusMutation(s): 0 
Gene Names: CNN1
Find proteins for P26932 (Gallus gallus)
Explore P26932 
Go to UniProtKB:  P26932
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 20 
  • Selection Criteria: LEAST RESTRAINT VIOLATION 
  • OLDERADO: 1H67 Olderado

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-02-14
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2020-01-15
    Changes: Data collection, Other