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
  • Primary Citation of Related Structures:  
    2MWN

  • 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. 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 ...

    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

    1] Department of Molecular Cardiology, Lerner Research Institute, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, Ohio 44195, USA [2] Department of Biochemistry, Case Western Reserve University, Cleveland, Ohio 44106, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Amyloid beta A4 precursor protein-binding family B member 1-interacting protein A24Homo sapiensMutation(s): 0 
Gene Names: APBB1IPPREL1RARP1RIAM
Find proteins for Q7Z5R6 (Homo sapiens)
Explore Q7Z5R6 
Go to UniProtKB:  Q7Z5R6
NIH Common Fund Data Resources
PHAROS:  Q7Z5R6
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Talin-1 B93Homo sapiensMutation(s): 0 
Gene Names: TLN1KIAA1027TLN
Find proteins for Q9Y490 (Homo sapiens)
Explore Q9Y490 
Go to UniProtKB:  Q9Y490
NIH Common Fund Data Resources
PHAROS:  Q9Y490
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 99 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 
  • OLDERADO: 2MWN Olderado

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

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