1TNQ

STRUCTURES OF THE APO AND CALCIUM TROPONIN-C REGULATORY DOMAINS: THE MUSCLE CONTRACTION SWITCH


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Submitted: 40 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structures of the troponin C regulatory domains in the apo and calcium-saturated states.

Gagne, S.M.Tsuda, S.Li, M.X.Smillie, L.B.Sykes, B.D.

(1995) Nat.Struct.Mol.Biol. 2: 784-789

  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Regulation of contraction in skeletal muscle occurs through calcium binding to the protein troponin C. The solution structures of the regulatory domain of apo and calcium-loaded troponin C have been determined by multinuclear, multidimensional nuclea ...

    Regulation of contraction in skeletal muscle occurs through calcium binding to the protein troponin C. The solution structures of the regulatory domain of apo and calcium-loaded troponin C have been determined by multinuclear, multidimensional nuclear magnetic resonance techniques. The structural transition in the regulatory domain of troponin C on calcium binding involves an opening of the structure through large changes in interhelical angles. This leads to the increased exposure of an extensive hydrophobic patch, an event that triggers skeletal muscle contraction.


    Related Citations: 
    • Quantification of the Calcium-Induced Secondary Structural Changes in the Regulatory Domain of Troponin-C
      Gagne, S.M.,Tsuda, S.,Li, M.X.,Chandra, M.,Smillie, L.B.,Sykes, B.D.
      (1994) Protein Sci. 3: 1961


    Organizational Affiliation

    Department of Biochemistry, University of Alberta, Edmonton, Canada.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
TROPONIN-C
A
90Gallus gallusMutation(s): 0 
Gene Names: TNNC2
Find proteins for P02588 (Gallus gallus)
Go to Gene View: TNNC2
Go to UniProtKB:  P02588
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

Download SDF File 
Download CCD File 
A
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Submitted: 40 
  • Olderado: 1TNQ Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1995-10-15
    Type: Initial release
  • Version 1.1: 2008-03-03
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance