Recombinant Human JAK2 Protein

Name: Recombinant Human JAK2 Protein
Brand: Beta LifeScience
SKU: BL-0649SG
Availability: InStock

Collections: Other recombinant proteins, Recombinant proteins

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Product Overview

Tag	GST
Host Species	Human
Accession	NM_004972
Synonym	none
Background	JAK2 is a member of intracellular non-receptor tyrosine kinases that transduce cytokine-mediated signals via the JAK-STAT pathway (1). JAK2 has two near-identical phosphate-transferring domains. One domain exhibits the kinase activity while the other stabilizes the JAK conformational structure. JAK2 is the predominant JAK kinase activated in response to several growth factors and cytokines such as IL-3, GM-CSF and erythropoietin. JAK2 has been found to be constitutively associated with the prolactin receptor and is required for responses to gamma interferon (2).
Description	Recombinant human JAK2 (804-end) was produced by baculovirus in Sf9 insect cells, fused with a GST tag at N-terminus. This protein is purified with our unique purification methods.
Source	Sf9 insect cells
AA Sequence	804a.a.-end
Molecular Weight	~63 kDa
Purity	For specific purity information on a given lot, see related COA.
Endotoxin	< 1.0 EU per μg of the protein as determined by the LAL method
Bioactivity	Active
Formulation	Recombinant protein is supplied in 50mM Tris-HCl, pH 7.5, 50mM NaCl, 10mM Glutathione, 0.25mM DTT, 0.1mM EDTA, 0.1mM PMSF and 25% glycerol.
Stability	The recombinant protein is stable for up to 12 months at -70°C
Usage	For Research Use Only
Storage	Recombinant Human JAK2 Protein should be stored should be stored at < -70°C. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.

Target Details

Target Function	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. Following ligand-binding to cell surface receptors, phosphorylates specific tyrosine residues on the cytoplasmic tails of the receptor, creating docking sites for STATs proteins. 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). In addition, JAK2 mediates angiotensin-2-induced ARHGEF1 phosphorylation. Plays a role in cell cycle by phosphorylating CDKN1B. 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.
Subcellular Location	Endomembrane system; Peripheral membrane protein. Cytoplasm. Nucleus.
Protein Families	Protein kinase superfamily, Tyr protein kinase family, JAK subfamily
Database References	HGNC: 6192 OMIM: 147796 KEGG: hsa:3717 STRING: 9606.ENSP00000371067 UniGene: Hs.656213
Associated Diseases	Budd-Chiari syndrome (BDCHS); Polycythemia vera (PV); Thrombocythemia 3 (THCYT3); Myelofibrosis (MYELOF); Leukemia, acute myelogenous (AML)
Tissue Specificity	Ubiquitously expressed throughout most tissues.

Gene Functions References

Clonal analysis shows that the dominant JAK2 V617F-positive clone in Polycythemia Vera harbors EGFR C329R substitution, thus this mutation may contribute to clonal expansion. PMID: 28550306
Patients with CALR mutation had significantly higher concentration of PDGF-BB and lower concentration of SDF-1alpha than patients with JAK2V617F mutation. High concentration of PDGF-BB and low concentration of SDF-1alpha in patients with CALR(+) ET may indicate a contribution of these chemokines in disturbed Ca2+ metabolism in platelets. PMID: 29390868
Here, we present two crystal structures of the human JAK2 FERM and SH2 domains bound to Leptin receptor (LEPR) and Erythropoietin receptor (EPOR), which identify a novel dimeric conformation for JAK2. PMID: 30044226
pathogenesis mechanism of JAK2 F556V mutation in the MPNs PMID: 29842959
Mir-204 attenuates angiogenesis in lung adenocarcinoma via JAK2-STAT3 pathway. PMID: 29281186
FEZF1-AS1 acts as an oncogenic lncRNA in human hepatocellular carcinoma by promoting JAK2/STAT3 signaling-mediated epithelial mesenchymal transformation. PMID: 29957463
Case Reports/Review: JAK2 mutation-associated cerebral arterial infarction and cerebral and systemic venous thromboembolism. PMID: 30056970
HSP27 is a partner of JAK2-STAT5 and a potential therapeutic target in myelofibrosis. PMID: 29650953
Our study suggests that JAK2V617F mutation may increase the risk of thrombosis in chronic myeloproliferative neoplasms. PMID: 30004057
Progression to polythythemia vera from familial thrombocytosis with germline JAK2 R867Q mutation. PMID: 29368262
JAK2 and STAT3 are activated in Idiopathic pulmonary fibrosis PMID: 29409529
The prevalence of CALR mutation in JAK2V617F-negative essential thrombocythemia in this study is 35.7%. HRM is an effective method of detecting CALR mutation and is a more advantageous method of screening for CALR mutation. PMID: 29521158
Comprehensive genomic characterization identified distinct genetic subgroups and provided a classification of myeloproliferative neoplasms on the basis of causal biologic mechanisms. Mutations in JAK2, CALR, or MPL being the sole abnormality in 45% of the patients. PMID: 30304655
Findings outlined in the current study demonstrated that the inhibition of P16 decreased the growth and metastasis potential of BC cells by inhibiting IL-6/JAK2/STAT3 signaling. PMID: 29388151
MPL-mutated and CALR-mutated essential thrombocythaemia share clinical and histological characteristics, with both genotypes showing higher platelet counts and a marked megakaryocytic proliferation in comparison with JAK2V617F-mutated ET. PMID: 29934356
results herein provide clues to understand the mechanism JAK2 V625F mutation caused myeloproliferative neoplasms and give information for the development of JAK2 mutation specific inhibitors. PMID: 29782975
Concomitant presence of JAK2V617F mutation and BCRABL translocation in two patients: A new entity or a variant of myeloproliferative neoplasms. PMID: 29845291
The JAK2 V617F mutation and thrombocytopenia. PMID: 27614229
PBX1 plays an oncogenic role in clear cell renal carcinoma via JAK2/STAT3 pathway PMID: 29678569
Our study shows that JAK2V617F leads to abnormal expression of numerous proteins at the membrane of circulating PV red blood cells, with overexpression of CALR and persistence of CANX PMID: 28385780
In 94.9% of PV, 85.5% ET and 85.2% PMF, authors found mutations in JAK2, MPL or CALR. 74.9% carried JAK2V617F, 12.3% CALR mutations, 2.1% MPL mutations and 10.7% were triple negative. PMID: 28990497
tyrphostin B42 induced the apoptosis of pancreatic cancer cells (PCCs) by regulating the expression of mitochondrialrelated genes. Therefore, these findings demonstrated that tyrphostin B42 attenuated trichostatin A resistance in PCCs by antagonizing the IL6/JAK2/STAT3 signaling PMID: 29393444
MiR-375 inhibits fetal ASM cell proliferation and migration by targeting JAK2/STAT3 signaling. PMID: 29245068
data show that HIT is more frequent, during heparin treatment, in patients with ET carrying V617F mutation, as compared with patients without mutations PMID: 29022213
Overexpression of ALK4 suppressed glioma cell proliferation, migration and invasion through the inactivation of JAK/STAT3 signaling pathway. PMID: 29278854
We describe a subset of non-small-cell lung cancer patients who had JAK2 amplifications resulting in high expression of PD-L1 PMID: 28795418
High JAK2 expression is associated with hepatocellular carcinoma. PMID: 28677802
JAK2 haplotype 46/1 and JAK2 V617F allele burden in MPN PMID: 29134760
Low JAK2 expression is associated with gastric cancer. PMID: 28656307
The authors discovered tyrosine 78 of Atoh1 is phosphorylated by a Jak2-mediated pathway only in tumor-initiating cells and in human Sonic Hedgehog-type medulloblastoma. PMID: 29168692
conclude that the activating JAK2 V617F mutation does not play a decisive role in the pathogenesis of progressive CKD PMID: 27889755
Our findings revealed that B7-H3 affect ovarian cancer progression through the Jak2/Stat3 pathway, indicating that B7-H3 has the potential to be a useful prognostic marker. PMID: 28765941
In 136 patients with myelofibrosis and a median age of 58 years who underwent allogeneic stem cell transplantation (AHSCT) for molecular residual disease, the percentage of molecular clearance on day 100 was higher in CALR-mutated patients (92%) in comparison with MPL- (75%) and JAKV617F-mutated patients (67%). PMID: 28714945
Mutational subtypes of JAK2 correlate with different clinical features in Japanese patients with myeloproliferative neoplasms. PMID: 29464483
identification of activating somatic mutations in JAK2 and germline mutations in JAK3 with clinical implications PMID: 29082853
Screening for the JAK2 V617F mutation in cerebral venous thrombosis patients seems to be useful because of its relatively high prevalence and the risk of thrombosis recurrence. PMID: 28609766
Ascochlorin significantly decreased phosphorylation of JAK2/STAT3, cancer cell migration and nuclear translocation of STAT3. PMID: 28569433
TLR7, TLR9, and JAK2 genes are potential biomarkers for systemic sclerosis. High TLR7 expression positively correlated with the late form of disease. Decreased levels of TLR9 and JAK2 mRNA were found in the patient's cohort in comparison to non-SSc individuals. PMID: 29147913
This study demonstrated that the JAK2V617F mutation was detectable in Patients with Stroke. PMID: 28625126
Curcumin attenuated neuropathic pain and down-regulated the production of spinal mature IL-1beta by inhibiting the aggregation of NALP1 inflammasome and the activation of the JAK2-STAT3 cascade in astrocytes. PMID: 27381056
High level of phosphorylated JAK2, and STAT3 are associated with systemic lupus erythematosus. PMID: 28177455
this study shows that Nrf2 activation induces lipocyte phenotype in hepatic stellate cells via enhancing SOCS3-dependent feedback inhibition on JAK2/STAT3 cascade PMID: 28601022
bladder cancer cell may inhibit maturation and function of dendritic cells involving of Jak2/STAT3 pathway, and there may be different mechanisms by which adriamycin-resistant BCC restrains DC function in antitumor immune response PMID: 27556503
Multivariate analysis adjusted for age, sex, follow-up period and hematological parameters confirmed that increased activated B cells were universally present in JAK2-mutated, CALR-mutated and triple-negative ET patients when compared to healthy adults. PMID: 28415571
In multivariable analysis, younger age, platelet count, hemoglobin level and JAK2 V617F mutation independently predicted the development of acquired von Willebrand syndrome (AVWS) among essential thrombocythemia (ET)patients; whereas only platelet count predicted its development among polycythemia vera (PV) patients. Among ET patients, JAK2 V617F was a main driver for the development of AVWS. PMID: 27919526
CXCR4 induced VEGF production and JAK2/STAT3 activation and enhanced STAT3 binding to VEGF promoter in gastric cancer cells. PMID: 28544312
these results reveal proteome alterations in MPN granulocytes depending on the phenotype and genotype of patients, highlighting new oncogenic mechanisms associated with JAK2 mutations and overexpression of calreticulin PMID: 28314843
JAK2 mutation is associated with Essential thrombocythemia. PMID: 28205126
Considering JAK2(V617F) -positive disease, a higher (>50%) JAK2(V617F) burden and histological classification are independent prognostic risk factors for disease progression. PMID: 28509339
Taken together, we found that silibinin inhibits the Jak2/STAT3/MMP2 signaling pathway, and inhibits the proliferation, migration, and invasion of triple-negative breast cancer cells. PMID: 28440514

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Proteins are sensitive to heat, and freeze-drying can preserve the activity of the majority of proteins. It improves protein stability, extends storage time, and reduces shipping costs. However, freeze-drying can also lead to the loss of the active portion of the protein and cause aggregation and denaturation issues. Nonetheless, these adverse effects can be minimized by incorporating protective agents such as stabilizers, additives, and excipients, and by carefully controlling various lyophilization conditions.

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Our protein products do not contain carrier protein or other additives (such as bovine serum albumin (BSA), human serum albumin (HSA) and sucrose, etc., and when lyophilized with the solution with the lowest salt content, they often cannot form A white grid structure, but a small amount of protein is deposited in the tube during the freeze-drying process, forming a thin or invisible transparent protein layer.

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