3KMU

Crystal structure of the ILK/alpha-parvin core complex (apo)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.200 
  • R-Value Observed: 0.202 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

The pseudoactive site of ILK is essential for its binding to alpha-Parvin and localization to focal adhesions.

Fukuda, K.Gupta, S.Chen, K.Wu, C.Qin, J.

(2009) Mol Cell 36: 819-830

  • DOI: 10.1016/j.molcel.2009.11.028
  • Primary Citation of Related Structures:  
    3KMU, 3KMW

  • PubMed Abstract: 
  • Integrin-linked kinase (ILK) plays a pivotal role in connecting transmembrane receptor integrin to the actin cytoskeleton and thereby regulating diverse cell-adhesion-dependent processes. The kinase domain (KD) of ILK is indispensable for its function, but the underlying molecular basis remains enigmatic ...

    Integrin-linked kinase (ILK) plays a pivotal role in connecting transmembrane receptor integrin to the actin cytoskeleton and thereby regulating diverse cell-adhesion-dependent processes. The kinase domain (KD) of ILK is indispensable for its function, but the underlying molecular basis remains enigmatic. Here we present the crystal structure of the ILK KD bound to its cytoskeletal regulator, the C-terminal calponin homology domain of alpha-parvin. While maintaining a canonical kinase fold, the ILK KD displays a striking pseudoactive site conformation. We show that rather than performing the kinase function, this conformation specifically recognizes alpha-parvin for promoting effective assembly of ILK into focal adhesions. The alpha-parvin-bound ILK KD can simultaneously engage integrin beta cytoplasmic tails. These results thus define ILK as a distinct pseudokinase that mechanically couples integrin and alpha-parvin for mediating cell adhesion. They also highlight functional diversity of the kinase fold and its "active" site in mediating many biological processes.


    Organizational Affiliation

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



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Integrin-linked kinaseA271Homo sapiensMutation(s): 2 
Gene Names: ILKILK1ILK2
EC: 2.7.11.1
UniProt & NIH Common Fund Data Resources
Find proteins for Q13418 (Homo sapiens)
Explore Q13418 
Go to UniProtKB:  Q13418
PHAROS:  Q13418
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Alpha-parvinB129Homo sapiensMutation(s): 0 
Gene Names: PARVAMXRA2
UniProt & NIH Common Fund Data Resources
Find proteins for Q9NVD7 (Homo sapiens)
Explore Q9NVD7 
Go to UniProtKB:  Q9NVD7
PHAROS:  Q9NVD7
Protein Feature View
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  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
AL-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.200 
  • R-Value Observed: 0.202 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 44.38α = 90
b = 117.715β = 101.68
c = 47.344γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
SOLVEphasing
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

  • Deposited Date: 2009-11-11 
  • Released Date: 2009-12-29 
  • Deposition Author(s): Fukuda, K., Qin, J.

Revision History  (Full details and data files)

  • Version 1.0: 2009-12-29
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance