JAK2
This gene encodes a non-receptor tyrosine kinase that plays a central role in cytokine and growth factor signalling. The primary isoform of this protein has an N-terminal FERM domain that is required for erythropoietin receptor association, an SH2 domain that binds STAT transcription factors, a pseudokinase domain and a C-terminal tyrosine kinase domain. Cytokine binding induces autophosphorylation and activation of this kinase. This kinase then recruits and phosphorylates signal transducer and activator of transcription (STAT) proteins. Growth factors like TGF-beta 1 also induce phosphorylation and activation of this kinase and translocation of downstream STAT proteins to the nucleus where they influence gene transcription. Mutations in this gene are associated with numerous inflammatory diseases and malignancies. This gene is a downstream target of the pleiotropic cytokine IL6 that is produced by B cells, T cells, dendritic cells and macrophages to produce an immune response or inflammation. Disregulation of the IL6/JAK2/STAT3 signalling pathways produces increased cellular proliferation and myeloproliferative neoplasms of hematopoietic stem cells. A nonsynonymous mutation in the pseudokinase domain of this gene disrupts the domains inhibitory effect and results in constitutive tyrosine phosphorylation activity and hypersensitivity to cytokine signalling. This gene and the IL6/JAK2/STAT3 signalling pathway is a therapeutic target for the treatment of excessive inflammatory responses to viral infections. Alternative splicing results in multiple transcript variants encoding distinct isoforms.
| Full Name | Janus kinase 2 |
| Gene ID | Human: 3717 Mouse: 16452 Rat: 24514 Monkey: 694184 |
| UniProt ID | Human: O60674 Mouse: Q62120 Rat: Q62689 |
| Alternative Names | JTK10;tyrosine-protein kinase JAK2;JAK-2;Janus kinase 2 (a protein tyrosine kinase) |
Product List
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- Product Category:
- Membrane Protein Stable Cell Lines
- Target Protein: JAK2 & EPOR (V617F) Target Family: Kinases/Enzyme Target Protein Species: Human Protein Tag: Tag-free Host Cell Type: BaF3 Assay Types: Drug screening and biological assays
- Product Category:
- Membrane Protein Stable Cell Lines
- Target Protein: JAK2 (V617F) Target Family: Kinases/Enzyme Target Protein Species: Human Protein Tag: Tag-free Host Cell Type: BaF3 Assay Types: Drug screening and biological assays
- Product Category:
- Membrane Protein Stable Cell Lines
- Target Protein: JAK2 Target Family: Kinases/Enzyme Drug Discovery Assays and Products Target Protein Species: Human Host Cell Type: Ba/F3; CHO-K1; HEK293
