1YA5

Crystal structure of the titin domains z1z2 in complex with telethonin

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.44 Å
  • R-Value Free: 0.265 
  • R-Value Work: 0.232 
  • R-Value Observed: 0.233 

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This is version 1.2 of the entry. See complete history. 


Literature

Palindromic assembly of the giant muscle protein titin in the sarcomeric Z-disk

Zou, P., Pinotsis, N., Lange, S., Song, Y.H., Popov, A., Mavridis, I., Mayans, O.M., Gautel, M., Wilmanns, M.

(2006) Nature 439: 229-233

  • DOI: 10.1038/nature04343
  • Primary Citation of Related Structures:  
    1YA5

  • PubMed Abstract: 

    • The Z-disk of striated and cardiac muscle sarcomeres is one of the most densely packed cellular structures in eukaryotic cells. It provides the architectural framework for assembling and anchoring the largest known muscle filament systems by an extensive network of protein-protein interactions, requiring an extraordinary level of mechanical stability ...

    The Z-disk of striated and cardiac muscle sarcomeres is one of the most densely packed cellular structures in eukaryotic cells. It provides the architectural framework for assembling and anchoring the largest known muscle filament systems by an extensive network of protein-protein interactions, requiring an extraordinary level of mechanical stability. Here we show, using X-ray crystallography, how the amino terminus of the longest filament component, the giant muscle protein titin, is assembled into an antiparallel (2:1) sandwich complex by the Z-disk ligand telethonin. The pseudosymmetric structure of telethonin mediates a unique palindromic arrangement of two titin filaments, a type of molecular assembly previously found only in protein-DNA complexes. We have confirmed its unique architecture in vivo by protein complementation assays, and in vitro by experiments using fluorescence resonance energy transfer. The model proposed may provide a molecular paradigm of how major sarcomeric filaments are crosslinked, anchored and aligned within complex cytoskeletal networks.

    Related Citations: 
    • Crystal structure of the titin domains z1z2 in complex with telethonin
      Pinotsis, N.
      (2003) Thesis --: --
    Organizational Affiliation: 

    EMBL-Hamburg c/o DESY, Notkeststrasse 85, D-22603 Hamburg, Germany.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
N2B-TITIN ISOFORMA, B201Homo sapiensMutation(s): 0 
Gene Names: TTN
EC: 2.7.11.1
UniProt & NIH Common Fund Data Resources
Find proteins for Q8WZ42 (Homo sapiens)
Explore Q8WZ42 
Go to UniProtKB:  Q8WZ42
PHAROS:  Q8WZ42
GTEx:  ENSG00000155657
Protein Feature View
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  • Reference Sequence
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
TELETHONINC [auth T]90Homo sapiensMutation(s): 4 
Gene Names: TCAP
UniProt & NIH Common Fund Data Resources
Find proteins for O15273 (Homo sapiens)
Explore O15273 
Go to UniProtKB:  O15273
PHAROS:  O15273
GTEx:  ENSG00000173991
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.44 Å
  • R-Value Free: 0.265 
  • R-Value Work: 0.232 
  • R-Value Observed: 0.233 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 46.326α = 90
b = 63.213β = 90
c = 242.584γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
MLPHAREphasing
REFMACrefinement

Structure Validation

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View more in-depth experimental data

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2005-12-20
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Advisory, Version format compliance