1YA5

Crystal structure of the titin domains z1z2 in complex with telethonin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.445 Å
  • R-Value Free: 0.265 
  • R-Value Work: 0.232 

wwPDB Validation 3D Report Full Report


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

  • 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 exten ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
N2B-TITIN ISOFORM
A, B
201Homo sapiensMutation(s): 0 
Gene Names: TTN
EC: 2.7.11.1
Find proteins for Q8WZ42 (Homo sapiens)
Go to Gene View: TTN
Go to UniProtKB:  Q8WZ42
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
TELETHONIN
T
90Homo sapiensMutation(s): 4 
Gene Names: TCAP
Find proteins for O15273 (Homo sapiens)
Go to Gene View: TCAP
Go to UniProtKB:  O15273
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A, B, T
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.445 Å
  • R-Value Free: 0.265 
  • R-Value Work: 0.232 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 46.326α = 90.00
b = 63.213β = 90.00
c = 242.584γ = 90.00
Software Package:
Software NamePurpose
MLPHAREphasing
SCALEPACKdata scaling
REFMACrefinement
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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