3KNB

Crystal structure of the titin C-terminus in complex with obscurin-like 1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.4 Å
  • R-Value Free: 0.195 
  • R-Value Work: 0.164 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Molecular basis of the head-to-tail assembly of giant muscle proteins obscurin-like 1 and titin.

Sauer, F.Vahokoski, J.Song, Y.H.Wilmanns, M.

(2010) Embo Rep. 11: 534-540

  • DOI: 10.1038/embor.2010.65

  • PubMed Abstract: 
  • Large filament proteins in muscle sarcomeres comprise many immunoglobulin-like domains that provide a molecular platform for self-assembly and interactions with heterologous protein partners. We have unravelled the molecular basis for the head-to-tai ...

    Large filament proteins in muscle sarcomeres comprise many immunoglobulin-like domains that provide a molecular platform for self-assembly and interactions with heterologous protein partners. We have unravelled the molecular basis for the head-to-tail interaction of the carboxyl terminus of titin and the amino-terminus of obscurin-like-1 by X-ray crystallography. The binary complex is formed by a parallel intermolecular beta-sheet that presents a novel immunoglobulin-like domain-mediated assembly mechanism in muscle filament proteins. Complementary binding data show that the assembly is entropy-driven rather than dominated data by specific polar interactions. The assembly observed leads to a V-shaped zipper-like arrangement of the two filament proteins.


    Organizational Affiliation

    EMBL-Hamburg, Notkestrasse 85, Hamburg D-22603, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Titin
A
100Homo 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
Obscurin-like protein 1
B
107Homo sapiensMutation(s): 0 
Gene Names: OBSL1 (KIAA0657)
Find proteins for O75147 (Homo sapiens)
Go to Gene View: OBSL1
Go to UniProtKB:  O75147
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

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

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.4 Å
  • R-Value Free: 0.195 
  • R-Value Work: 0.164 
  • Space Group: P 31
Unit Cell:
Length (Å)Angle (°)
a = 60.910α = 90.00
b = 60.910β = 90.00
c = 42.050γ = 120.00
Software Package:
Software NamePurpose
SHELXSphasing
MAR345data collection
PHENIXrefinement
XSCALEdata scaling
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-12-01
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2017-11-01
    Type: Advisory, Refinement description