1U6H

Vinculin head (0-258) in complex with the talin vinculin binding site 2 (849-879)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.38 Å
  • R-Value Free: 0.322 
  • R-Value Work: 0.242 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

A vinculin binding domain from the talin rod unfolds to form a complex with the vinculin head.

Fillingham, I.Gingras, A.R.Papagrigoriou, E.Patel, B.Emsley, J.Critchley, D.R.Roberts, G.C.Barsukov, I.L.

(2005) Structure 13: 65-74

  • DOI: 10.1016/j.str.2004.11.006
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The cytoskeletal protein talin plays a key role in activating integrins and in coupling them to the actin cytoskeleton. Its N-terminal globular head, which binds beta integrins, is linked to an extended rod having a C-terminal actin binding site and ...

    The cytoskeletal protein talin plays a key role in activating integrins and in coupling them to the actin cytoskeleton. Its N-terminal globular head, which binds beta integrins, is linked to an extended rod having a C-terminal actin binding site and several vinculin binding sites (VBSs). The NMR structure of residues 755-889 of the rod (containing a VBS) is shown to be an amphipathic four-helix bundle with a left-handed topology. A talin peptide corresponding to the VBS binds the vinculin head; the X-ray crystallographic structure of this complex shows that the residues which interact with vinculin are buried in the hydrophobic core of the talin fragment. NMR shows that the interaction involves a major structural change in the talin fragment, including unfolding of one of its helices, making the VBS accessible to vinculin. Interestingly, the talin 755-889 fragment binds more than one vinculin head molecule, suggesting that the talin rod may contain additional as yet unrecognized VBSs.


    Organizational Affiliation

    Department of Biochemistry, University of Leicester, Leicester LE1 7RH, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Vinculin
A
280Gallus gallusMutation(s): 0 
Gene Names: VCL (VINC1)
Find proteins for P12003 (Gallus gallus)
Go to Gene View: VCL
Go to UniProtKB:  P12003
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Talin
B
31Gallus gallusMutation(s): 0 
Gene Names: TLN1 (TLN)
Find proteins for P54939 (Gallus gallus)
Go to Gene View: TLN1
Go to UniProtKB:  P54939
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.38 Å
  • R-Value Free: 0.322 
  • R-Value Work: 0.242 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 52.122α = 90.00
b = 69.154β = 90.00
c = 96.162γ = 90.00
Software Package:
Software NamePurpose
AMoREphasing
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-01-18
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance