Biological Assembly 1  

 3D View: Structure

Standalone Viewers  
Protein Workshop | Ligand Explorer

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 14815.04 
• Atom Count: 1036 
• Residue Count: 135 
• Unique protein chains: 1

2LK4

Structural and mechanistic insights into the interaction between PAT Pyk2 and Paxillin LD motif

• DOI: 10.2210/pdb2LK4/pdb
• BMRB: 17974

• Classification: TRANSFERASE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli


• Deposited: 2011-10-04 Released: 2012-10-10 
• Deposition Author(s): Vanarotti, M., Miller, D., Guibao, C., Zheng, J.

---

Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 100 
• Conformers Submitted: 20 
• Selection Criteria: all calculated structures submitted 

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

• PubMed: 25174335 
• DOI: 10.1016/j.jmb.2014.08.014
• Primary Citation of Related Structures:  
  4R32, 3U3F


• 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 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.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Protein-tyrosine kinase 2-beta	A	135	Homo sapiens	Mutation(s): 0  Gene Names: PTK2B (FAK2, PYK2, RAFTK) EC: 2.7.10.2
Find proteins for Q14289 (Homo sapiens) Go to Gene View: PTK2B Go to UniProtKB:  Q14289

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 100 
• Conformers Submitted: 20 
• Selection Criteria: all calculated structures submitted 
• Olderado: 2LK4 Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2011-10-04 
• Released Date: 2012-10-10 
• Deposition Author(s): Vanarotti, M., Miller, D., Guibao, C., Zheng, J.

Revision History 

• Version 1.0: 2012-10-10
  Type: Initial release
• Version 1.1: 2014-09-24
  Type: Database references
• Version 1.2: 2014-12-31
  Type: Database references