4R32

Crystal Structure Analysis of Pyk2 and Paxillin LD motifs


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.50 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.221 
  • R-Value Observed: 0.222 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural and Mechanistic Insights into the Interaction between Pyk2 and Paxillin LD Motifs.

Vanarotti, M.S.Miller, D.J.Guibao, C.D.Nourse, A.Zheng, J.J.

(2014) J Mol Biol 426: 3985-4001

  • DOI: 10.1016/j.jmb.2014.08.014
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Proline-rich tyrosine kinase 2 (Pyk2) is a member of the focal adhesion kinase (FAK) subfamily of cytoplasmic tyrosine kinases. The C-terminal Pyk2-focal adhesion targeting (FAT) domain binds to paxillin, an adhesion molecule. Paxillin has five leuci ...

    Proline-rich tyrosine kinase 2 (Pyk2) is a member of the focal adhesion kinase (FAK) subfamily of cytoplasmic tyrosine kinases. The C-terminal Pyk2-focal adhesion targeting (FAT) domain binds to paxillin, an adhesion molecule. Paxillin has five leucine-aspartate (LD) motifs (LD1-LD5). Here, we show that the second LD motif of paxillin, LD2, interacts with Pyk2-FAT, similar to the known Pyk2-FAT/LD4 interaction. Both LD motifs can target two ligand binding sites on Pyk2-FAT. Interestingly, they also share similar binding affinity for Pyk2-FAT with preferential association to one site relative to the other. Nevertheless, the LD2-LD4 region of paxillin (paxillin(133-290)) binds to Pyk2-FAT as a 1:1 complex. However, our data suggest that the Pyk2-FAT and paxillin complex is dynamic and it appears to be a mixture of two distinct conformations of paxillin that almost equally compete for Pyk2-FAT binding. These studies provide insight into the underlying selectivity of paxillin for Pyk2 and FAK that may influence the differing behavior of these two closely related kinases in focal adhesion sites.


    Organizational Affiliation

    Department of Structural Biology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA. Electronic address: Jie.Zheng@stjude.org.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Protein-tyrosine kinase 2-beta
A
139Homo sapiensMutation(s): 2 
Gene Names: PTK2BFAK2PYK2RAFTK
EC: 2.7.10.2
Find proteins for Q14289 (Homo sapiens)
Go to UniProtKB:  Q14289
NIH Common Fund Data Resources
PHAROS  Q14289
Protein Feature View
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Paxillin
B, C
24Gallus gallusMutation(s): 0 
Gene Names: PXN
Find proteins for P49024 (Gallus gallus)
Go to UniProtKB:  P49024
Protein Feature View
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.50 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.221 
  • R-Value Observed: 0.222 
  • Space Group: P 62 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 182.96α = 90
b = 182.96β = 90
c = 52.85γ = 120
Software Package:
Software NamePurpose
MAR345dtbdata collection
PHASERphasing
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-09-17
    Type: Initial release
  • Version 1.1: 2014-12-24
    Changes: Database references