Macromolecule Content

• Total Structure Weight: 9.77 kDa 
• Atom Count: 655 
• Residue Count: 82 
• Unique protein chains: 2

1WA7

SH3 DOMAIN OF HUMAN LYN TYROSINE KINASE IN COMPLEX WITH A HERPESVIRAL LIGAND

• DOI: 10.2210/pdb1WA7/pdb
• BMRB: 6456
• BMRB: 6261

• Classification: SH3 DOMAIN
• Organism(s): Homo sapiens, Saimiriine gammaherpesvirus 2
• Expression System: Escherichia coli BL21
• Mutation(s): No 


• Deposited: 2004-10-25 Released: 2005-07-07 
• Deposition Author(s): Bauer, F., Schweimer, K., Hoffmann, S., Roesch, P., Sticht, H.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 60 
• Conformers Submitted: 20 
• Selection Criteria: LEAST RESTRAINT VIOLATION 

Literature

Structural Investigation of the Binding of a Herpesviral Protein to the SH3 Domain of Tyrosine Kinase Lck.

Schweimer, K., Hoffmann, S., Bauer, F., Friedrich, U., Kardinal, C., Feller, S.M., Biesinger, B., Sticht, H.

(2002) Biochemistry 41: 5120

• PubMed: 11955060 
• DOI: 10.1021/bi015986j
• Primary Citation of Related Structures:  
  1WA7, 1H92


• PubMed Abstract: 
  

Herpesvirus saimiri codes for a tyrosine kinase interacting protein (Tip) that interacts with both the SH3 domain and the kinase domain of the T-cell-specific tyrosine kinase Lck via two separate motifs. The activation of Lck by Tip is considered as a key event in the transformation of human T-lymphocytes during herpesviral infection. We investigated the interaction of proline-rich Tip peptides with the LckSH3 domain starting with the structural characterization of the unbound interaction partners. The solution structure of the LckSH3 was determined by heteronuclear multidimensional nuclear magnetic resonance (NMR) spectroscopy using 44 residual dipolar couplings in addition to the conventional experimental restraints. Circular dichroism spectroscopy proved that the polyproline helix of Tip is already formed prior to SH3 binding and is conformationally stable. NMR titration experiments point out three major regions of the Tip-Lck interaction comprising the RT loop, the n-src loop, and a helical turn preceding the last strand of the beta-sheet. Further changes of the chemical shifts were observed for the N- and C-terminal beta-strands of the SH3 domain, indicating additional contacts outside the proline-rich segment or subtle structural rearrangements transmitted from the binding site of the proline helix. Fluorescence spectroscopy shows that Tip binds to the SH3 domains of several Src kinases (Lck, Hck, Lyn, Src, Fyn, Yes), exhibiting the highest affinities for Lyn, Hck, and Lck.

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Organizational Affiliation: 

Lehrstuhl für Biopolymere, Universität Bayreuth, 95440 Bayreuth, Germany.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
TYROSINE-PROTEIN KINASE LYN	A	65	Homo sapiens	Mutation(s): 0  Gene Names: LYN, JTK8 EC: 2.7.1.112 (PDB Primary Data), 2.7.10.2 (UniProt)
Find proteins for P07948 (Homo sapiens) Explore P07948  Go to UniProtKB:  P07948
NIH Common Fund Data Resources
PHAROS:  P07948 GTEx:  ENSG00000254087

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
HYPOTHETICAL 28.7 KDA PROTEIN IN DHFR 3'REGION (ORF1)	B	22	Saimiriine gammaherpesvirus 2	Mutation(s): 0
Find proteins for P22575 (Saimiriine herpesvirus 2 (strain 488)) Explore P22575  Go to UniProtKB:  P22575

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 60 
• Conformers Submitted: 20 
• Selection Criteria: LEAST RESTRAINT VIOLATION 
• OLDERADO: 1WA7 Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2004-10-25 
• Released Date: 2005-07-07 
Deposition Author(s): Bauer, F., Schweimer, K., Hoffmann, S., Roesch, P., Sticht, H.

Revision History 

• Version 1.0: 2005-07-07
  Type: Initial release
  
• Version 1.1: 2011-05-08
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance