1RJA

Solution Structure and Backbone Dynamics of the Nonreceptor Tyrosine Kinase PTK6/Brk SH2 Domain


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 21 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Solution Structure and Backbone Dynamics of the Non-receptor Protein-tyrosine Kinase-6 Src Homology 2 Domain

Hong, E.Shin, J.Kim, H.I.Lee, S.T.Lee, W.

(2004) J.Biol.Chem. 279: 29700-29708

  • DOI: 10.1074/jbc.M313185200

  • PubMed Abstract: 
  • Human protein-tyrosine kinase-6 (PTK6, also known as breast tumor kinase (Brk)) is a member of the non-receptor protein-tyrosine kinase family and is expressed in two-thirds of all breast tumors. To understand the structural basis of PTK6 function, w ...

    Human protein-tyrosine kinase-6 (PTK6, also known as breast tumor kinase (Brk)) is a member of the non-receptor protein-tyrosine kinase family and is expressed in two-thirds of all breast tumors. To understand the structural basis of PTK6 function, we have determined the solution structure and backbone dynamics of the PTK6-Src homology 2 (SH2) domain using multidimensional NMR spectroscopy. The solution structure clearly indicates that the SH2 domain of human PTK6 contains a consensus alpha/beta-fold and a Tyr(P) peptide binding surface, which are common to other SH2 domains. However, two of the alpha-helices (alphaA and alphaB) are located on opposite faces of the central beta-sheet. In addition, the topological arrangement of a central four-stranded antiparallel beta-sheet (strands betaA, betaB, betaC, and betaD) differs from that of other Src family members. Backbone dynamics and Tyr(P) peptide titration experiments revealed that the putative ligand binding sites of the PTK6-SH2 domain undergo distinctive internal motions when compared with other regions of the protein. Surface plasmon resonance analysis showed that the Tyr(P) peptide had a dissociation constant of about 60 microm, which is substantially weaker binding than previously reported for Src family members. The solution structure together with data from the ligand binding mode of PTK6-SH2 provides insight into the molecular basis of the autoinhibitory role of PTK6.


    Related Citations: 
    • Letter to the Editor: Complete sequence-specific 1H, 13C and 15N resonance assignments of the human PTK6 SH2 domain
      Hong, E.,Shin, J.,Bang, E.,Kim, M.H.,Lee, S.T.,Lee, W.
      (2001) J.Biomol.NMR 19: 291


    Organizational Affiliation

    Department of Biochemistry and Protein Network Research Center, College of Science, Yonsei University, Seoul 120-749, Korea.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Tyrosine-protein kinase 6
A
100Homo sapiensGene Names: PTK6 (BRK)
EC: 2.7.10.2
Find proteins for Q13882 (Homo sapiens)
Go to Gene View: PTK6
Go to UniProtKB:  Q13882
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 21 
  • Selection Criteria: structures with the lowest energy 
  • Olderado: 1RJA Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-07-20
    Type: Initial release
  • Version 1.1: 2008-04-29
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2011-08-10
    Type: Source and taxonomy