Jak2
entrez
24514
canonical
uniprot
Q62689
canonical
ensembl
ENSRNOG00000059968
resolver
ensembl
ENSRNOG00055031013
resolver
ensembl
ENSRNOG00060030737
resolver
ensp
ENSRNOP00000071877
resolver
ensp
ENSRNOP00055044502
resolver
ensp
ENSRNOP00060044381
resolver
enst
ENSRNOT00000087011
resolver
enst
ENSRNOT00055053783
resolver
enst
ENSRNOT00060053416
resolver
genesymbol
Jak2
resolver
uniprot_entry
JAK2_RAT
resolver
activity_regulation
ACTIVITY REGULATION: Regulated by autophosphorylation, can both activate or decrease activity. Heme regulates its activity by enhancing the phosphorylation on Tyr-1007 and Tyr-1008. {ECO:0000250|UniProtKB:O60674, ECO:0000250|UniProtKB:Q62120}.
uniprot
proteins
amino_acid_sequence
MGMACLTMTEMEGTSTSPAHQNGDIPGNANSVKQTEPVLQVYLYHSLGQAEGDYLKFPNGEYVAEEICVAASKACGITPVYHNMFALMSETERIWYPPNHVFHIDESTRHNILYRIRFYFPHWYCSGSNRTYRYGVSRGAEAPLLDDFVMSYLFAQWRHDFVHGWIKVPVTHETQEECLGMAVLDMMRIAKEKDQTPLAVYNSISYKTFLPKCVRAKIQDYHILTRKRIRYRFRRFIQQFSQCKATARNLKLKYLINLETLQSAFYTEQFEVKESARGPSGEEIFATIIITGNGGIQWSRGKHKESETLTEQDLQLYCDFPDIIDVSIKQANQECSTESRVVTVHKQDGKVLEIELSSLKEALSFVSLIDGYYRLTADAHHYLCKEVAPPAVLENIHSNCHGPISMDFAISKLKKAGNQTGLYVLRCSPKDFNKYFLTFAVERENVIEYKHCLITKNENGEYNLSGTKRNFSSLKDLLNCYQMETVRSDSIIFQFTKCCPPKPKDKSNLLVFRTNGVSDVQLSPTLQRHNNVNQMVFHKIRNEDLIFNESLGQGTFTKIFKGVRREVGDYGQLHETEVLLKVLDKAHRNYSESFFEAASMMSQLSHKHLVLNYGVCVCGEENILVQEFVKFGSLDTYLKKNKNSINILWKLGVAKQLAWAMHFLEEKSLIHGNVCAKNILLIREEDRKTGNPPFIKLSDPGISITVLPKDILQERIPWVPPECIENPKNLTLATDKWSFGTTLWEICSGGDKPLSALDSQRKLQFYEDKHQLPAPKWTELANLINTCMDYEPDFRPAFRAVIRDLNSLFTPDYELLTENDMLPNMRIGALGFSGAFEDRDPTQFEERHLKFLQQLGKGNFGSVEMCRYDPLQDNTGEVVAVKKLQHSTEEHLRDFEREIEILKSLQHDNIVKYKGVCYSAGRRNLRLIMEYLPYGSLRDYLQKHKERIDHKKLLQYTSQICKGMEYLGTKRYIHRDLATRNILVENENRVKIGDFGLTKVLPQDKEYYKVKEPGESPIFWYAPESLTESKFSVASDVWSFGVVLYELFTYIEKSKSPPVEFMRMIGNDKQGQMIVFHLIELLKNNGRLPRPEGCPDEIYVIMTECWNNNVNQRPSFRDLSLRVDQIRDSMAA
uniprot
proteins
ec_number
2.7.10.2
uniprot
proteins
function
FUNCTION: Non-membrane spanning protein tyrosine kinase that phosphorylates type I receptors such as growth hormone (GHR), prolactin (PRLR), leptin (LEPR), erythropoietin (EPOR), thrombopoietin receptor (MPL/TPOR); or type II receptors including IFN-alpha, IFN-beta, IFN-gamma and multiple interleukins. Functionally, plays a pivotal role in signal transduction and is involved in various processes such as cell growth, development, differentiation or histone modifications. Mediates essential signaling events in both innate and adaptive immunity. Mechanistically, 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. Up-regulates the potassium voltage-gated channel activity of KCNA3. Binding of CNTF or the CLCF1/CLF heterodimer to CNTFR leads to IL6ST/gp130-LIFR dimerization followed by activation of JAK1 and JAK2 which in turns phosphorylate IL6ST/gp130 and LIFR. The tyrosine phosphorylated signaling receptors serve in turn as docking proteins for STAT3. Involved in the oncostatin-M-mediated signaling pathway through both type I OSM receptor complex (heterodimers composed of LIFR and IL6ST) and type II OSM receptor complex (heterodimers composed of OSMR and IL6ST). {ECO:0000250|UniProtKB:O60674}.
uniprot
proteins
mass_dalton
130585
uniprot
proteins
post_translational_modification
PTM: Autophosphorylated, leading to regulate its activity. Leptin promotes phosphorylation on tyrosine residues, including phosphorylation on Tyr-813. Autophosphorylation on Tyr-119 in response to EPO down-regulates its kinase activity. Autophosphorylation on Tyr-868, Tyr-966 and Tyr-972 in response to growth hormone (GH) are required for maximal kinase activity. Also phosphorylated by TEC (By similarity). Phosphorylated on tyrosine residues in response to interferon gamma signaling. Phosphorylated on tyrosine residues in response to a signaling cascade that is activated by increased cellular retinol (By similarity). {ECO:0000250|UniProtKB:O60674, ECO:0000250|UniProtKB:Q62120}.; PTM: Undergoes Notch-induced ubiquitination and subsequent proteasomal degradation which is mediated by ASB1 or ASB2, the substrate-recognition components of probable ECS E3 ubiquitin-protein ligase complexes. {ECO:0000250|UniProtKB:O60674}.
uniprot
proteins
protein_family
JAK subfamily
uniprot
proteins
protein_family
Protein kinase superfamily
uniprot
proteins
protein_family
Tyr protein kinase family
uniprot
proteins
pubmed
22673903
uniprot
proteins
pubmed
7607555
uniprot
proteins
sequence_length
1132
uniprot
proteins
subcellular_location
SUBCELLULAR LOCATION: Endomembrane system {ECO:0000250}; Peripheral membrane protein {ECO:0000250}. Cytoplasm {ECO:0000250}. Nucleus {ECO:0000250}.
uniprot
proteins