The oncogenic versions of the Ret and Trk tyrosine kinases bind Shc and Grb2 adaptor proteins.
1994
Proto-TRK and proto-RET genes encode receptor type tyrosine kinases. Oncogenic rearrangements of both proto-oncogenes have been detected with a significant frequency in human papillary thyroid carcinomas. Chimeric Ret and Trk oncoproteins, encoded by different rearrangements of proto-TRK and proto-RET genes, display a constitutive phosphorylation on tyrosine. Moreover, it has been shown that phosphorylated tyrosine receptors, activated by their ligands, form multiprotein complexes responsible for transducing mitogenic or differentiation signals. We have therefore begun to analyse in this study the signal transduction pathways triggered by different Ret and Trk oncoproteins
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