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“IFN-β suppressed insulin-induced tyrosine phosphorylation of IRS-1 without affecting its expression, whereas IFN-γ reduced both the protein level and tyrosine phosphorylation.”
“Consistently, tyrosine phosphorylation levels of Stat1 upon IFN-γ treatment and, to a lesser extent, upon IFN-α stimulation were markedly elevated in mutant cells.”
Molecular and Cellular Biology • 1999 | View Paper
“Binding of alpha interferon (IFNalpha) to its receptors induces rapid tyrosine phosphorylation of the receptor subunits IFNaR1 and IFNaR2, the TYK2 and JAK1 tyrosine kinases, and the Stat1 and Stat2 transcription factors.”
“Specifically, the tyk2 gene is shown to encode a 135-kDa protein which is rapidly phosphorylated on tyrosine in response to interferon-alpha treatment.”