General description
Non-receptor tyrosine kinase involved in various processes such as cell growth, development, differentiation or histone modifications. Mediates essential signaling events in both innate and adaptive immunity. In the cytoplasm, plays a pivotal role in signal transduction via its association with type I receptors such as growth hormone (GHR), prolactin (PRLR), leptin (LEPR), erythropoietin (EPOR), thrombopoietin (THPO); or type II receptors including IFN-alpha, IFN-beta, IFN-gamma and multiple interleukins (PubMed:7615558). Following ligand-binding to cell surface receptors, phosphorylates specific tyrosine residues on the cytoplasmic tails of the receptor, creating docking sites for STATs proteins (PubMed:9618263). Subsequently, phosphorylates the STATs proteins once they are recruited to the receptor. Phosphorylated STATs then form homodimer or heterodimers and translocate to the nucleus to activate gene transcription. For example, cell stimulation with erythropoietin (EPO) during erythropoiesis leads to JAK2 autophosphorylation, activation, and its association with erythropoietin receptor (EPOR) that becomes phosphorylated in its cytoplasmic domain. Then, STAT5 (STAT5A or STAT5B) is recruited, phosphorylated and activated by JAK2. Once activated, dimerized STAT5 translocates into the nucleus and promotes the transcription of several essential genes involved in the modulation of erythropoiesis. Part of a signaling cascade that is activated by increased cellular retinol and that leads to the activation of STAT5 (STAT5A or STAT5B) (PubMed:21368206). In addition, JAK2 mediates angiotensin-2-induced ARHGEF1 phosphorylation (PubMed:20098430). Plays a role in cell cycle by phosphorylating CDKN1B (PubMed:21423214). Cooperates with TEC through reciprocal phosphorylation to mediate cytokine-driven activation of FOS transcription. In the nucleus, plays a key role in chromatin by specifically mediating phosphorylation of ′Tyr-41′ of histone H3 (H3Y41ph), a specific tag that promotes exclusion of CBX5 (HP1 alpha) from chromatin (PubMed:19783980).
Immunogen
A synthesized peptide derived from human Phospho-JAK2 (Y1007 + Y1008)
Physical form
Rabbit IgG in phosphate buffered saline , pH 7.4, 150mM NaCl, 0.02% sodium azide and 50% glycerol.
Preparation Note
Upon receipt, store at -20°C or -80°C. Avoid repeated freeze.
Other Notes
966-1023aa
| recombinant | expressed in HEK 293 F cells |
| Quality Segment | 100 |
| conjugate | unconjugated |
| antibody product type | primary antibodies |
| clone | 1A4, recombinant monoclonal |
| form | liquid |
| mol wt | 150 kDa |
| purified by | affinity chromatography |
| species reactivity | human |
| concentration | 0.25mg/ml |
| technique(s) | ELISA: 2000:10000,flow cytometry: 1:50-1:200,immunofluorescence: 1:50-1:200,immunohistochemistry: 1:50-1:200 |
| isotype | IgG |
| UniProt accession no. | O60674 |
| shipped in | wet ice |
| storage temp. | -10 to -25°C |
| target post-translational modification | phosphorylation (pTyr1007 + pTyr1008) |
