Title : Frap-dependent serine phosphorylation of IRS-1 inhibits IRS-1 tyrosine phosphorylation.

Pub. Date : 2001 Jan 26

PMID : 11162588






2 Functional Relationships(s)
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1 We have previously shown that interferon-alpha (IFN alpha)-dependent tyrosine phosphorylation of insulin receptor substrate-1 (IRS-1) is impaired by serine phosphorylation of IRS-1 due to the reduced ability of serine phosphorylated IRS-1 to serve as a substrate for Janus kinase 1 (JAK1). Tyrosine interferon alpha 1 Homo sapiens
2 Furthermore, treatment of U266 cells with the FRAP inhibitor rapamycin increased IFN alpha-dependent tyrosine phosphorylation by twofold while reducing constitutive IRS-1 serine phosphorylation within S/T-P motifs by 80%. Tyrosine interferon alpha 1 Homo sapiens