Title : Tyrosine 729 of the G-CSF receptor controls the duration of receptor signaling: involvement of SOCS3 and SOCS1.

Pub. Date : 2005 Oct

PMID : 16033816






4 Functional Relationships(s)
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Compound Name
Protein Name
Organism
1 Tyrosine 729 of the G-CSF receptor controls the duration of receptor signaling: involvement of SOCS3 and SOCS1. Tyrosine suppressor of cytokine signaling 1 Homo sapiens
2 Expression of SOCS3 or SOCS1, but not SOCS2 and cytokine-inducible SH2 domain-containing protein, completely suppressed G-CSF-induced Stat5 activation but had only a weak effect on Stat5 activation mediated by the receptor mutant lacking Tyr 729. Tyrosine suppressor of cytokine signaling 1 Homo sapiens
3 SOCS1 and SOCS3 also inhibited G-CSF-dependent cell proliferation, but the inhibitory effect of the two SOCS proteins on cell proliferation was diminished when Tyr 729 of the G-CSF-R was mutated. Tyrosine suppressor of cytokine signaling 1 Homo sapiens
4 These data indicate that Tyr 729 of the G-CSF-R is required for SOCS1- and SOCS3-mediated negative regulation of G-CSF-R signaling and that the duration and intensity of G-CSF-induced Stat5 activation are regulated by two distinct mechanisms. Tyrosine suppressor of cytokine signaling 1 Homo sapiens