PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 10991939-1 2000 Growth hormone (GH)-inducible suppressors of cytokine signaling (SOCS/CIS proteins) inhibit GH receptor (GHR) signaling to STAT5b via phosphotyrosine-dependent binding interactions with the tyrosine kinase JAK2 (SOCS-1) and/or the cytoplasmic tail of GHR (CIS and SOCS-3). Phosphotyrosine 134-149 Janus kinase 2 Rattus norvegicus 206-210 10991939-3 2000 CIS is shown to inhibit GHR-JAK2 signaling by two distinct mechanisms: by a partial inhibition that is decreased at elevated STAT5b levels and may involve competition between CIS and STAT5b for common GHR cytoplasmic tail phosphotyrosine-binding sites; and by a time-dependent inhibition, not seen with SOCS-1 or SOCS-3, that involves proteasome action. Phosphotyrosine 222-237 Janus kinase 2 Rattus norvegicus 28-32 9973252-6 1999 Moreover, the requirement for ongoing GH stimulation and active protein synthesis to maintain STAT5b activity in continuous GH-treated cells were both eliminated by pervanadate treatment, suggesting that phosphotyrosine dephosphorylation may be an obligatory first step in the internalization/degradation pathway for the GHR-JAK2 complex. Phosphotyrosine 204-219 Janus kinase 2 Rattus norvegicus 325-329 7508935-4 1994 JAK2 underwent rapid and transient tyrosine phosphorylation in response to receptor activation, reaching peak levels within 5 min of exposure to 100 nM PRL at 37 degrees C. In vitro tyrosine kinase assays using either [gamma-32P]ATP and autoradiography or unlabeled ATP combined with anti-phosphotyrosine immunoblotting, demonstrated that the activity of JAK2 was stimulated by PRL. Phosphotyrosine 289-304 Janus kinase 2 Rattus norvegicus 0-4 7508935-3 1994 In the present work this protein is identified as JAK2, based upon reciprocal anti-JAK2 and anti-phosphotyrosine immunoprecipitation and immunoblotting. Phosphotyrosine 97-112 Janus kinase 2 Rattus norvegicus 50-54