3G9W

Crystal Structure of Talin2 F2-F3 in Complex with the Integrin Beta1D Cytoplasmic Tail

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.17 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.213 
  • R-Value Observed: 0.215 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history. 


Literature

The structure of an integrin/talin complex reveals the basis of inside-out signal transduction

Anthis, N.J., Wegener, K.L., Ye, F., Kim, C., Goult, B.T., Lowe, E.D., Vakonakis, I., Bate, N., Critchley, D.R., Ginsberg, M.H., Campbell, I.D.

(2009) EMBO J 28: 3623-3632

  • DOI: 10.1038/emboj.2009.287
  • Primary Citation of Related Structures:  
    3G9W

  • PubMed Abstract: 

    • Fundamental to cell adhesion and migration, integrins are large heterodimeric membrane proteins that uniquely mediate inside-out signal transduction, whereby adhesion to the extracellular matrix is activated from within the cell by direct binding of talin to the cytoplasmic tail of the beta integrin subunit ...

    Fundamental to cell adhesion and migration, integrins are large heterodimeric membrane proteins that uniquely mediate inside-out signal transduction, whereby adhesion to the extracellular matrix is activated from within the cell by direct binding of talin to the cytoplasmic tail of the beta integrin subunit. Here, we report the first structure of talin bound to an authentic full-length beta integrin tail. Using biophysical and whole cell measurements, we show that a specific ionic interaction between the talin F3 domain and the membrane-proximal helix of the beta tail disrupts an integrin alpha/beta salt bridge that helps maintain the integrin inactive state. Second, we identify a positively charged surface on the talin F2 domain that precisely orients talin to disrupt the heterodimeric integrin transmembrane (TM) complex. These results show key structural features that explain the ability of talin to mediate inside-out TM signalling.

    Organizational Affiliation: 

    Department of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, UK. nick.anthis@gmail.com



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Talin-2 A, B223Mus musculusMutation(s): 0 
Gene Names: Tln2
Find proteins for Q71LX4 (Mus musculus)
Explore Q71LX4 
Go to UniProtKB:  Q71LX4
Protein Feature View
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  • Reference Sequence
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Integrin beta-1D C, D52Homo sapiensMutation(s): 0 
Gene Names: ITGB1, FNRB, MDF2, MSK12
Find proteins for P05556 (Homo sapiens)
Explore P05556 
Go to UniProtKB:  P05556
NIH Common Fund Data Resources
PHAROS:  P05556
GTEx:  ENSG00000150093
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.17 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.213 
  • R-Value Observed: 0.215 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 53.26α = 90
b = 108.72β = 90
c = 131.85γ = 90
Software Package:
Software NamePurpose
MxCuBEdata collection
PHASERphasing
PHENIXrefinement
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

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View more in-depth experimental data

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2009-10-20
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Non-polymer description, Version format compliance
  • Version 1.2: 2014-02-05
    Changes: Database references