3G9W

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.165 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.213 

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

  • 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 ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Talin-2
A, B
223Mus musculusMutation(s): 0 
Gene Names: Tln2
Find proteins for Q71LX4 (Mus musculus)
Go to UniProtKB:  Q71LX4
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Integrin beta-1D
C, D
52Homo sapiensMutation(s): 0 
Gene Names: ITGB1 (FNRB, MDF2, MSK12)
Find proteins for P05556 (Homo sapiens)
Go to Gene View: ITGB1
Go to UniProtKB:  P05556
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL

Download SDF File 
Download CCD File 
A, B, C
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
PEG
Query on PEG

Download SDF File 
Download CCD File 
A, B
DI(HYDROXYETHYL)ETHER
C4 H10 O3
MTHSVFCYNBDYFN-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.165 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.213 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 53.260α = 90.00
b = 108.720β = 90.00
c = 131.850γ = 90.00
Software Package:
Software NamePurpose
MOSFLMdata reduction
PHASERphasing
PHENIXrefinement
MxCuBEdata collection
SCALAdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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