2MSU

NMR structure of Kindlin-2 F2 339-358


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 99 
  • Conformers Submitted: 19 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Molecular Basis of Kindlin-2 Binding to Integrin-linked Kinase Pseudokinase for Regulating Cell Adhesion.

Fukuda, K.Bledzka, K.Yang, J.Perera, H.D.Plow, E.F.Qin, J.

(2014) J Biol Chem 289: 28363-28375

  • DOI: 10.1074/jbc.M114.596692
  • Primary Citation of Related Structures:  
    2MSU

  • PubMed Abstract: 
  • Integrin-linked kinase (ILK) is a distinct intracellular adaptor essential for integrin-mediated cell-extracellular matrix adhesion, cell spreading, and migration. Acting as a major docking platform in focal adhesions, ILK engages many proteins to dynamically link integrins with the cytoskeleton, but the underlying mechanism remains elusive ...

    Integrin-linked kinase (ILK) is a distinct intracellular adaptor essential for integrin-mediated cell-extracellular matrix adhesion, cell spreading, and migration. Acting as a major docking platform in focal adhesions, ILK engages many proteins to dynamically link integrins with the cytoskeleton, but the underlying mechanism remains elusive. Here, we have characterized the interaction of ILK with kindlin-2, a key regulator for integrin bidirectional signaling. We show that human kindlin-2 binds to human ILK with high affinity. Using systematic mapping approaches, we have identified a major ILK binding site involving a 20-residue fragment (residues 339-358) in kindlin-2. NMR-based analysis reveals a helical conformation of this fragment that utilizes its leucine-rich surface to recognize the ILK pseudokinase domain in a mode that is distinct from another ILK pseudokinase domain binding protein, α-parvin. Structure-based mutational experiments further demonstrate that the kindlin-2 binding to ILK is crucial for the kindlin-2 localization to focal adhesions and cell spreading (integrin outside-in signaling) but dispensable for the kindlin-2-mediated integrin activation (integrin inside-out signaling). These data define a specific mode of the kindlin-2/ILK interaction with mechanistic implications as to how it spatiotemporally mediates integrin signaling and cell adhesion.


    Organizational Affiliation

    From the Department of Molecular Cardiology, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio 44195 qinj@ccf.org.



Macromolecules
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Fermitin family homolog 2A20Homo sapiensMutation(s): 0 
Gene Names: FERMT2KIND2MIG2PLEKHC1
UniProt & NIH Common Fund Data Resources
Find proteins for Q96AC1 (Homo sapiens)
Explore Q96AC1 
Go to UniProtKB:  Q96AC1
PHAROS:  Q96AC1
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 99 
  • Conformers Submitted: 19 
  • Selection Criteria: structures with the lowest energy 
  • OLDERADO: 2MSU Olderado

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-08-27
    Type: Initial release
  • Version 1.1: 2014-09-10
    Changes: Database references
  • Version 1.2: 2014-10-29
    Changes: Database references