Crystal structure of a the active conformation of the kinase domain of focal adhesion kinase with a phosphorylated activation loop.

Experimental Data Snapshot

  • Resolution: 2.30 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.214 
  • R-Value Observed: 0.217 

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This is version 1.3 of the entry. See complete history


Structural Basis for the Autoinhibition of Focal Adhesion Kinase

Lietha, D.Cai, X.Ceccarelli, D.F.J.Li, Y.Schaller, M.D.Eck, M.J.

(2007) Cell 129: 1177

  • DOI: https://doi.org/10.1016/j.cell.2007.05.041
  • Primary Citation of Related Structures:  
    2J0J, 2J0K, 2J0L, 2J0M

  • PubMed Abstract: 

    Appropriate tyrosine kinase signaling depends on coordinated sequential coupling of protein-protein interactions with catalytic activation. Focal adhesion kinase (FAK) integrates signals from integrin and growth factor receptors to regulate cellular responses including cell adhesion, migration, and survival. Here, we describe crystal structures representing both autoinhibited and active states of FAK. The inactive structure reveals a mechanism of inhibition in which the N-terminal FERM domain directly binds the kinase domain, blocking access to the catalytic cleft and protecting the FAK activation loop from Src phosphorylation. Additionally, the FERM domain sequesters the Tyr397 autophosphorylation and Src recruitment site, which lies in the linker connecting the FERM and kinase domains. The active phosphorylated FAK kinase adopts a conformation that is immune to FERM inhibition. Our biochemical and structural analysis shows how the architecture of autoinhibited FAK orchestrates an activation sequence of FERM domain displacement, linker autophosphorylation, Src recruitment, and full catalytic activation.

  • Organizational Affiliation

    Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
FOCAL ADHESION KINASE 1276Gallus gallusMutation(s): 0 
Find proteins for Q00944 (Gallus gallus)
Explore Q00944 
Go to UniProtKB:  Q00944
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ00944
Sequence Annotations
  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
Query on PTR
Experimental Data & Validation

Experimental Data

  • Resolution: 2.30 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.214 
  • R-Value Observed: 0.217 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 44.312α = 90
b = 71.809β = 90
c = 86.939γ = 90
Software Package:
Software NamePurpose
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2007-06-26
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Version format compliance
  • Version 1.2: 2019-04-03
    Changes: Advisory, Data collection, Derived calculations, Other, Source and taxonomy
  • Version 1.3: 2023-12-13
    Changes: Advisory, Data collection, Database references, Derived calculations, Other, Refinement description