2MWN

Talin-F3 / RIAM N-terminal Peptide complex


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 99 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Conformational activation of talin by RIAM triggers integrin-mediated cell adhesion.

Yang, J.Zhu, L.Zhang, H.Hirbawi, J.Fukuda, K.Dwivedi, P.Liu, J.Byzova, T.Plow, E.F.Wu, J.Qin, J.

(2014) Nat Commun 5: 5880-5880

  • DOI: 10.1038/ncomms6880

  • PubMed Abstract: 
  • The membrane localization and activation of cytoskeletal protein talin are key steps to initiate the integrin transmembrane receptors' activation, which mediates many cellular adhesive responses such as cell migration, spreading and proliferation. RI ...

    The membrane localization and activation of cytoskeletal protein talin are key steps to initiate the integrin transmembrane receptors' activation, which mediates many cellular adhesive responses such as cell migration, spreading and proliferation. RIAM, a membrane anchor and small GTPase RAP1 effector, is known to bind to the C-terminal rod domain of talin (talin-R) and promote localizations of talin to the membrane. Through systematic mapping analysis, we find that RIAM also binds to the N-terminal head of talin (talin-H), a crucial domain involved in binding and activating integrins. We show that the RIAM binding to talin-H sterically occludes the binding of a talin-R domain that otherwise masks the integrin-binding site on talin-H. We further provide functional evidence that such RIAM-mediated steric unmasking of talin triggers integrin activation. Our findings thus uncover a novel role for RIAM in conformational regulation of talin during integrin activation and cell adhesion.


    Organizational Affiliation

    Department of Molecular Cardiology, Lerner Research Institute, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, Ohio 44195, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Amyloid beta A4 precursor protein-binding family B member 1-interacting protein
A
24Homo sapiensGene Names: APBB1IP (PREL1, RARP1, RIAM)
Find proteins for Q7Z5R6 (Homo sapiens)
Go to Gene View: APBB1IP
Go to UniProtKB:  Q7Z5R6
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Talin-1
B
93Homo sapiensGene Names: TLN1 (KIAA1027, TLN)
Find proteins for Q9Y490 (Homo sapiens)
Go to Gene View: TLN1
Go to UniProtKB:  Q9Y490
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 99 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-12-17
    Type: Initial release
  • Version 1.1: 2015-01-14
    Type: Database references