Biological Assembly 1  

 3D View: Structure | 1D-3D View | Validation Report

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 17.35 kDa 
• Atom Count: 1212 
• Modelled Residue Count: 168 
• Deposited Residue Count: 168 
• Unique protein chains: 1

2L7N

Solution Structure of the R5 Domain of Talin

• PDB DOI: 10.2210/pdb2L7N/pdb
• BMRB: 17363

• Classification: STRUCTURAL PROTEIN
• Organism(s): Mus musculus
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2010-12-14 Released: 2011-12-14 
• Deposition Author(s): Goult, B.T., Gingras, A.R., Bate, N., Barsukov, I.L., Roberts, G.C.K., Critchley, D.R.

---

Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 200 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 

Literature

RIAM and vinculin binding to talin are mutually exclusive and regulate adhesion assembly and turnover.

Goult, B.T., Zacharchenko, T., Bate, N., Tsang, R., Hey, F., Gingras, A.R., Elliott, P.R., Roberts, G.C., Ballestrem, C., Critchley, D.R., Barsukov, I.L.

(2013) J Biol Chem 288: 8238-8249

• PubMed: 23389036 
• DOI: 10.1074/jbc.M112.438119
• Primary Citation of Related Structures:  
  2L10, 2L7A, 2L7N, 2LQG, 3ZDL


• PubMed Abstract: 
  

Talin activates integrins, couples them to F-actin, and recruits vinculin to focal adhesions (FAs). Here, we report the structural characterization of the talin rod: 13 helical bundles (R1-R13) organized into a compact cluster of four-helix bundles (R2-R4) within a linear chain of five-helix bundles. Nine of the bundles contain vinculin-binding sites (VBS); R2R3 are atypical, with each containing two VBS. Talin R2R3 also binds synergistically to RIAM, a Rap1 effector involved in integrin activation. Biochemical and structural data show that vinculin and RIAM binding to R2R3 is mutually exclusive. Moreover, vinculin binding requires domain unfolding, whereas RIAM binds the folded R2R3 double domain. In cells, RIAM is enriched in nascent adhesions at the leading edge whereas vinculin is enriched in FAs. We propose a model in which RIAM binding to R2R3 initially recruits talin to membranes where it activates integrins. As talin engages F-actin, force exerted on R2R3 disrupts RIAM binding and exposes the VBS, which recruit vinculin to stabilize the complex.

---

Organizational Affiliation: 

Department of Biochemistry, University of Leicester, Lancaster Road, Leicester LE1 9HN, United Kingdom.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Talin-1	A	168	Mus musculus	Mutation(s): 0  Gene Names: Tln1, Tln
UniProt
Find proteins for P26039 (Mus musculus) Explore P26039  Go to UniProtKB:  P26039

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 200 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 
• OLDERADO: 2L7N Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2010-12-14 
• Released Date: 2011-12-14 
Deposition Author(s): Goult, B.T., Gingras, A.R., Bate, N., Barsukov, I.L., Roberts, G.C.K., Critchley, D.R.

Revision History  

• Version 1.0: 2011-12-14
  Type: Initial release
  
• Version 1.1: 2014-01-15
  Changes: Database references
• Version 1.2: 2021-08-25
  Changes: Data collection, Database references, Structure summary