1T01

Vinculin complexed with the VBS1 helix from talin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.06 Å
  • R-Value Free: 0.303 
  • R-Value Work: 0.230 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Activation of a vinculin-binding site in the talin rod involves rearrangement of a five-helix bundle

PAPAGRIGORIOU, E.GINGRAS, A.R.BARSUKOV, I.L.Bate, N.Fillingham, I.J.Patel, B.Frank, R.Ziegler, W.H.Roberts, G.C.Critchley, D.R.Emsley, J.

(2004) Embo J. 23: 2942-2951

  • DOI: 10.1038/sj.emboj.7600285
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The interaction between the cytoskeletal proteins talin and vinculin plays a key role in integrin-mediated cell adhesion and migration. We have determined the crystal structures of two domains from the talin rod spanning residues 482-789. Talin 482-6 ...

    The interaction between the cytoskeletal proteins talin and vinculin plays a key role in integrin-mediated cell adhesion and migration. We have determined the crystal structures of two domains from the talin rod spanning residues 482-789. Talin 482-655, which contains a vinculin-binding site (VBS), folds into a five-helix bundle whereas talin 656-789 is a four-helix bundle. We show that the VBS is composed of a hydrophobic surface spanning five turns of helix 4. All the key side chains from the VBS are buried and contribute to the hydrophobic core of the talin 482-655 fold. We demonstrate that the talin 482-655 five-helix bundle represents an inactive conformation, and mutations that disrupt the hydrophobic core or deletion of helix 5 are required to induce an active conformation in which the VBS is exposed. We also report the crystal structure of the N-terminal vinculin head domain in complex with an activated form of talin. Activation of the VBS in talin and the recruitment of vinculin may support the maturation of small integrin/talin complexes into more stable adhesions.


    Organizational Affiliation

    Department of Biochemistry, University of Leicester, Leicester, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
unnamed protein product
A
255Gallus 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 1
B
24Mus musculusMutation(s): 0 
Gene Names: Tln1 (Tln)
Find proteins for P26039 (Mus musculus)
Go to UniProtKB:  P26039
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.06 Å
  • R-Value Free: 0.303 
  • R-Value Work: 0.230 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 51.645α = 90.00
b = 71.421β = 90.00
c = 96.093γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-08-24
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance