STRING 9.05 
PTPN22 [ENSP00000352833]
 
protein tyrosine phosphatase, non-receptor type 22 (lymphoid); Seems to act on Cbl. May play a role in regulating the function of Cbl and its associated protein kinases
LCK [ENSP00000337825]
 
lymphocyte-specific protein tyrosine kinase; Tyrosine kinase that plays an essential role for the selection and maturation of developing T-cell in the thymus and in mature T-cell function. Is constitutively associated with the cytoplasmic portions of the CD4 and CD8 surface receptors and plays a key role in T-cell antigen receptor(TCR)-linked signal transduction pathways. Association of the TCR with a peptide antigen-bound MHC complex facilitates the interaction of CD4 and CD8 with MHC class II and class I molecules, respectively, and thereby recruits the associated LCK to the vicinity [...]
Evidence suggesting a functional link:
Neighborhood in the Genome:  
none / insignificant.
    
Gene Fusions:  
none / insignificant.
    
Cooccurence Across Genomes:  
none / insignificant.
    
Co-Expression:   yes (score 0.112).  
Experimental/Biochemical Data:   yes (score 0.684).  
Association in Curated Databases:  
none / insignificant.
    
Co-Mentioned in PubMed Abstracts:   yes (score 0.859).  
Combined Score:
 
0.955
 
Evidence for specific actions:
Post-translational modification:yes (score: 0.800)  
Binding:yes (score: 0.800)