1ZW3

Vinculin Head (0-258) in Complex with the Talin Rod residues 1630-1652


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.30 Å
  • R-Value Free: 0.307 
  • R-Value Work: 0.224 
  • R-Value Observed: 0.228 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Mapping and consensus sequence identification for multiple vinculin binding sites within the talin rod

Gingras, A.R.Ziegler, W.H.Frank, R.Barsukov, I.L.Roberts, G.C.Critchley, D.R.Emsley, J.

(2005) J Biol Chem 280: 37217-37224

  • DOI: 10.1074/jbc.M508060200
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • The interaction between the cytoskeletal proteins talin and vinculin plays a key role in integrin-mediated cell adhesion and migration. Three vinculin binding sites (VBS1-3) have previously been identified in the talin rod using a yeast two-hybrid as ...

    The interaction between the cytoskeletal proteins talin and vinculin plays a key role in integrin-mediated cell adhesion and migration. Three vinculin binding sites (VBS1-3) have previously been identified in the talin rod using a yeast two-hybrid assay. To extend these studies, we spot-synthesized a series of peptides spanning all the alpha-helical regions predicted for the talin rod and identified eight additional VBSs, two of which overlap key functional regions of the rod, including the integrin binding site and C-terminal actin binding site. The talin VBS alpha-helices bind to a hydrophobic cleft in the N-terminal vinculin Vd1 domain. We have defined the specificity of this interaction by spot-synthesizing a series of 25-mer talin VBS1 peptides containing substitutions with all the commonly occurring amino acids. The consensus for recognition is LXXAAXXVAXX- VXXLIXXA with distinct classes of hydrophobic side chains at positions 1, 4, 5, 8, 9, 12, 15, and 16 required for vinculin binding. Positions 1, 8, 12, 15, and 16 require an aliphatic residue and will not tolerate alanine, whereas positions 4, 5, and 9 are less restrictive. These preferences are common to all 11 VBS sequences with a minor variation occurring in one case. A crystal structure of this variant VBS peptide in complex with the vinculin Vd1 domain reveals a subtly different mode of vinculin binding.


    Organizational Affiliation

    Department of Biochemistry, University of Leicester, Leicester LE1 7RH, United Kingdom.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
VinculinA279Gallus gallusMutation(s): 0 
Gene Names: VCLVINC1
Find proteins for P12003 (Gallus gallus)
Explore P12003 
Go to UniProtKB:  P12003
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  • Reference Sequence

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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Talin 1B25N/AMutation(s): 0 
Find proteins for P26039 (Mus musculus)
Explore P26039 
Go to UniProtKB:  P26039
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.30 Å
  • R-Value Free: 0.307 
  • R-Value Work: 0.224 
  • R-Value Observed: 0.228 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 51.621α = 90
b = 72.168β = 90
c = 96.725γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-09-20
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance