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1zw3

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{{STRUCTURE_1zw3| PDB=1zw3 | SCENE= }}
{{STRUCTURE_1zw3| PDB=1zw3 | SCENE= }}
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'''Vinculin Head (0-258) in Complex with the Talin Rod residues 1630-1652'''
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===Vinculin Head (0-258) in Complex with the Talin Rod residues 1630-1652===
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==Overview==
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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.
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(as it appears on PubMed at http://www.pubmed.gov), where 16135522 is the PubMed ID number.
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{{ABSTRACT_PUBMED_16135522}}
==About this Structure==
==About this Structure==
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[[Category: Talin]]
[[Category: Talin]]
[[Category: Vinculin]]
[[Category: Vinculin]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 29 11:53:18 2008''

Revision as of 08:53, 29 July 2008

Image:1zw3.png

Template:STRUCTURE 1zw3

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

Template:ABSTRACT PUBMED 16135522

About this Structure

1ZW3 is a Protein complex structure of sequences from Gallus gallus. Full crystallographic information is available from OCA.

Reference

Mapping and consensus sequence identification for multiple vinculin binding sites within the talin rod., Gingras AR, Ziegler WH, Frank R, Barsukov IL, Roberts GC, Critchley DR, Emsley J, J Biol Chem. 2005 Nov 4;280(44):37217-24. Epub 2005 Aug 30. PMID:16135522

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