exposure of dexamethasone-treated cells of the mt-1 line of f111 rat cells bearing a dexamethasone-inducible polyoma virus middle t ( mt ) antigen gene to very low concentrations of the protein kinase c-stimulating phorbol ester tpa increased the association of mt antigen with the cellular pp60c-src tyrosine protein kinase , as indicated by an increased phosphorylation of tyrosine residues of mt in mt : pp60c-src complexes precipitated from extracts of the tpa-treated cells by anti-mt antibodies .
C0282625
src tyrosine
C0031715
phosphorylation