3VF0 image
Entry Detail
PDB ID:
3VF0
Title:
Raver1 in complex with metavinculin L954 deletion mutant
Biological Source:
Source Organism:
Host Organism:
PDB Version:
Deposition Date:
2012-01-09
Release Date:
2012-07-25
Method Details:
Experimental Method:
Resolution:
2.54 Å
R-Value Free:
0.20
R-Value Work:
0.16
R-Value Observed:
0.17
Space Group:
P 65 2 2
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Vinculin
Chain IDs:A
Chain Length:283
Number of Molecules:1
Biological Source:Homo sapiens
Polymer Type:polypeptide(L)
Description:Ribonucleoprotein PTB-binding 1
Chain IDs:B
Chain Length:285
Number of Molecules:1
Biological Source:Homo sapiens
Primary Citation
The Metavinculin Tail Domain Directs Constitutive Interactions with Raver1 and vinculin RNA.
J.Mol.Biol. 422 697 704 (2012)
PMID: 22709580 DOI: 10.1016/j.jmb.2012.06.015

Abstact

Vinculin is a key regulator of the actin cytoskeleton attachment to the cell membrane at cellular adhesion sites, which is crucial for processes such as cell motility and migration, development, survival, and wound healing. Vinculin loss results in embryonic lethality, cardiovascular diseases, and cancer. Its tail domain, Vt, is crucial for vinculin activation and focal adhesion turnover and binds to the actin cytoskeleton and acidic phospholipids upon which it unfurls. The RNA binding protein raver1 regulates the assembly of focal adhesions transcriptionally by binding to vinculin. The muscle-specific splice form, metavinculin, is characterized by a 68-residue insert in the tail domain (MVt) and correlates with hereditary idiopathic dilated cardiomyopathy. Here, we report that metavinculin can bind to raver1 in its inactive state. Our crystal structure explains this permissivity, where an extended coil unique to MVt is unfurled in the MVtΔ954:raver1 complex structure. Our binding assays show that raver1 forms a ternary complex with MVt and vinculin mRNA. These findings suggest that the metavinculin:raver1:RNA complex is constitutively recruited to adhesion complexes.

Legend

Protein

Chemical

Disease

Primary Citation of related structures