Involvement of the Jak-3 Janus kinase in signalling by interleukins 2and 4 in lymphoid and myeloid cells
摘要：
MANY cytokines function through interaction with receptors of the cytokine receptor superfamily. Although lacking catalytic domains, cytokine receptors couple ligand binding to induction of protein tyrosine phosphorylation. Recent studies 1–10 have shown that one or more of the Janus kinase family members (Jaks) associate with cytokine receptors and are tyrosine phosphorylated and activated following ligand binding. Here we describe a new Jak family kinase, Jak-3 and demonstrate that Jak-3 and to a lesser extent Jak-1, are tyrosine phosphorylated and Jak-3 is activated in the responses to interleukin-2 and interleukin–4 in T cells and myeloid cells. Jak-3 activation requires the serine-rich, membrane-proximal domain of the interleukin-2 receptor β-chain, but does not require the acidic domain that is required for association and activation of Src family kinases.
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关键词：
Lymphocytes Bone Marrow Cells Cell Line Bone Marrow Animals Mice Interleukin-2 Interleukin-4 Cytokines Precipitin Tests
DOI：
10.1038/370153a0
被引量：
年份：
1994
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