Q75R65
Gene name |
JAK2 |
Protein name |
Tyrosine-protein kinase JAK2 |
Names |
EC 2.7.10.2 , Janus kinase 2 , JAK-2 |
Species |
Gallus gallus (Chicken) |
KEGG Pathway |
|
EC number |
2.7.10.2: Protein-tyrosine kinases |
Protein Class |
|

Descriptions
Autoinhibitory domains (AIDs)
Target domain |
846-1127 (Protein kinase domain) |
Relief mechanism |
Partner binding |
Assay |
|
Target domain |
846-1127 (Protein kinase domain) |
Relief mechanism |
Partner binding |
Assay |
|
Target domain |
846-1127 (Protein kinase domain) |
Relief mechanism |
Partner binding |
Assay |
|
Accessory elements
695-714 (Activation loop from InterPro)
Target domain |
542-803 (Janus kinase 2, pseudokinase domain) |
Relief mechanism |
|
Assay |
|
990-1016 (Activation loop from InterPro)
Target domain |
841-1124 (Janus kinase 2, catalytic domain) |
Relief mechanism |
|
Assay |
|
References
- Saharinen P et al. (2003) "Autoinhibition of Jak2 tyrosine kinase is dependent on specific regions in its pseudokinase domain", Molecular biology of the cell, 14, 1448-59
- Kershaw NJ et al. (2013) "SOCS3 binds specific receptor-JAK complexes to control cytokine signaling by direct kinase inhibition", Nature structural & molecular biology, 20, 469-76
- Ma W et al. (2009) "Mutation profile of JAK2 transcripts in patients with chronic myeloproliferative neoplasias", The Journal of molecular diagnostics : JMD, 11, 49-53
- Hubbard SR (2017) "Mechanistic Insights into Regulation of JAK2 Tyrosine Kinase", Frontiers in endocrinology, 8, 361
- Wang J et al. (2023) "Triple-action inhibitory mechanism of allosteric TYK2-specific inhibitors", bioRxiv : the preprint server for biology, ,
- Lupardus PJ et al. (2014) "Structure of the pseudokinase-kinase domains from protein kinase TYK2 reveals a mechanism for Janus kinase (JAK) autoinhibition", Proceedings of the National Academy of Sciences of the United States of America, 111, 8025-30
Autoinhibited structure

Activated structure

1 structures for Q75R65
Entry ID | Method | Resolution | Chain | Position | Source |
---|---|---|---|---|---|
AF-Q75R65-F1 | Predicted | AlphaFoldDB |
No variants for Q75R65
Variant ID(s) | Position | Change | Description | Diseaes Association | Provenance |
---|---|---|---|---|---|
No variants for Q75R65 |
3 associated diseases with Q75R65
[MIM: 612245]: Inflammatory bowel disease 14 (IBD14)
A chronic, relapsing inflammation of the gastrointestinal tract with a complex etiology. It is subdivided into Crohn disease and ulcerative colitis phenotypes. Crohn disease may affect any part of the gastrointestinal tract from the mouth to the anus, but most frequently it involves the terminal ileum and colon. Bowel inflammation is transmural and discontinuous; it may contain granulomas or be associated with intestinal or perianal fistulas. In contrast, in ulcerative colitis, the inflammation is continuous and limited to rectal and colonic mucosal layers, fistulas and granulomas are not observed. Both diseases include extraintestinal inflammation of the skin, eyes, or joints. . Note=Disease susceptibility is associated with variants affecting the gene represented in this entry.
[MIM: 612251]: Systemic lupus erythematosus 10 (SLEB10)
A chronic, relapsing, inflammatory, and often febrile multisystemic disorder of connective tissue, characterized principally by involvement of the skin, joints, kidneys and serosal membranes. It is of unknown etiology, but is thought to represent a failure of the regulatory mechanisms of the autoimmune system. The disease is marked by a wide range of system dysfunctions, an elevated erythrocyte sedimentation rate, and the formation of LE cells in the blood or bone marrow. . Note=Disease susceptibility is associated with variants affecting the gene represented in this entry.
[MIM: 180300]: Rheumatoid arthritis (RA)
An inflammatory disease with autoimmune features and a complex genetic component. It primarily affects the joints and is characterized by inflammatory changes in the synovial membranes and articular structures, widespread fibrinoid degeneration of the collagen fibers in mesenchymal tissues, and by atrophy and rarefaction of bony structures. . Note=Disease susceptibility is associated with variants affecting the gene represented in this entry.
Without disease ID
- A chronic, relapsing inflammation of the gastrointestinal tract with a complex etiology. It is subdivided into Crohn disease and ulcerative colitis phenotypes. Crohn disease may affect any part of the gastrointestinal tract from the mouth to the anus, but most frequently it involves the terminal ileum and colon. Bowel inflammation is transmural and discontinuous; it may contain granulomas or be associated with intestinal or perianal fistulas. In contrast, in ulcerative colitis, the inflammation is continuous and limited to rectal and colonic mucosal layers, fistulas and granulomas are not observed. Both diseases include extraintestinal inflammation of the skin, eyes, or joints. . Note=Disease susceptibility is associated with variants affecting the gene represented in this entry.
- A chronic, relapsing, inflammatory, and often febrile multisystemic disorder of connective tissue, characterized principally by involvement of the skin, joints, kidneys and serosal membranes. It is of unknown etiology, but is thought to represent a failure of the regulatory mechanisms of the autoimmune system. The disease is marked by a wide range of system dysfunctions, an elevated erythrocyte sedimentation rate, and the formation of LE cells in the blood or bone marrow. . Note=Disease susceptibility is associated with variants affecting the gene represented in this entry.
- An inflammatory disease with autoimmune features and a complex genetic component. It primarily affects the joints and is characterized by inflammatory changes in the synovial membranes and articular structures, widespread fibrinoid degeneration of the collagen fibers in mesenchymal tissues, and by atrophy and rarefaction of bony structures. . Note=Disease susceptibility is associated with variants affecting the gene represented in this entry.
Functions
Description | ||
---|---|---|
EC Number | 2.7.10.2 | Protein-tyrosine kinases |
Subcellular Localization |
|
|
PANTHER Family | ||
PANTHER Subfamily | ||
PANTHER Protein Class | ||
PANTHER Pathway Category | No pathway information available |
5 GO annotations of cellular component
Name | Definition |
---|---|
cytoskeleton | A cellular structure that forms the internal framework of eukaryotic and prokaryotic cells. The cytoskeleton includes intermediate filaments, microfilaments, microtubules, the microtrabecular lattice, and other structures characterized by a polymeric filamentous nature and long-range order within the cell. The various elements of the cytoskeleton not only serve in the maintenance of cellular shape but also have roles in other cellular functions, including cellular movement, cell division, endocytosis, and movement of organelles. |
cytosol | The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes. |
endomembrane system | A collection of membranous structures involved in transport within the cell. The main components of the endomembrane system are endoplasmic reticulum, Golgi bodies, vesicles, cell membrane and nuclear envelope. Members of the endomembrane system pass materials through each other or though the use of vesicles. |
membrane | A lipid bilayer along with all the proteins and protein complexes embedded in it and attached to it. |
nucleus | A membrane-bounded organelle of eukaryotic cells in which chromosomes are housed and replicated. In most cells, the nucleus contains all of the cell's chromosomes except the organellar chromosomes, and is the site of RNA synthesis and processing. In some species, or in specialized cell types, RNA metabolism or DNA replication may be absent. |
7 GO annotations of molecular function
Name | Definition |
---|---|
ATP binding | Binding to ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator. |
growth hormone receptor binding | Binding to a growth hormone receptor. |
heme binding | Binding to a heme, a compound composed of iron complexed in a porphyrin (tetrapyrrole) ring. |
histone binding | Binding to a histone, any of a group of water-soluble proteins found in association with the DNA of eukaryotic or archaeal chromosomes. They are involved in the condensation and coiling of chromosomes during cell division and have also been implicated in gene regulation and DNA replication. They may be chemically modified (methylated, acetlyated and others) to regulate gene transcription. |
histone H3Y41 kinase activity | Catalysis of the reaction |
non-membrane spanning protein tyrosine kinase activity | Catalysis of the reaction |
protein tyrosine kinase activity | Catalysis of the reaction |
11 GO annotations of biological process
Name | Definition |
---|---|
activation of Janus kinase activity | The process of introducing a phosphate group to a tyrosine residue of a JAK (Janus Activated Kinase) protein, thereby activating it. |
cytokine-mediated signaling pathway | The series of molecular signals initiated by the binding of a cytokine to a receptor on the surface of a cell, and ending with the regulation of a downstream cellular process, e.g. transcription. |
erythrocyte differentiation | The process in which a myeloid precursor cell acquires specializes features of an erythrocyte. |
growth hormone receptor signaling pathway via JAK-STAT | The process in which STAT proteins (Signal Transducers and Activators of Transcription) are activated by members of the JAK (janus activated kinase) family of tyrosine kinases, following the binding of physiological ligands to the growth hormone receptor. Once activated, STATs dimerize and translocate to the nucleus and modulate the expression of target genes. |
intracellular signal transduction | The process in which a signal is passed on to downstream components within the cell, which become activated themselves to further propagate the signal and finally trigger a change in the function or state of the cell. |
positive regulation of cell population proliferation | Any process that activates or increases the rate or extent of cell proliferation. |
post-translational protein modification | The process of covalently altering one or more amino acids in a protein after the protein has been completely translated and released from the ribosome. |
protein autophosphorylation | The phosphorylation by a protein of one or more of its own amino acid residues (cis-autophosphorylation), or residues on an identical protein (trans-autophosphorylation). |
receptor signaling pathway via JAK-STAT | Any process in which STAT proteins (Signal Transducers and Activators of Transcription) and JAK (Janus Activated Kinase) proteins convey a signal to trigger a change in the activity or state of a cell. The receptor signaling pathway via JAK-STAT begins with activation of a receptor and proceeeds through STAT protein activation by members of the JAK family of tyrosine kinases. STAT proteins dimerize and subsequently translocate to the nucleus. The pathway ends with regulation of target gene expression by STAT proteins. |
regulation of apoptotic process | Any process that modulates the occurrence or rate of cell death by apoptotic process. |
signal transduction | The cellular process in which a signal is conveyed to trigger a change in the activity or state of a cell. Signal transduction begins with reception of a signal (e.g. a ligand binding to a receptor or receptor activation by a stimulus such as light), or for signal transduction in the absence of ligand, signal-withdrawal or the activity of a constitutively active receptor. Signal transduction ends with regulation of a downstream cellular process, e.g. regulation of transcription or regulation of a metabolic process. Signal transduction covers signaling from receptors located on the surface of the cell and signaling via molecules located within the cell. For signaling between cells, signal transduction is restricted to events at and within the receiving cell. |
76 homologous proteins in AiPD
UniProt AC | Gene Name | Protein Name | Species | Evidence Code |
---|---|---|---|---|
A0JNB0 | FYN | Tyrosine-protein kinase Fyn | Bos taurus (Bovine) | SS |
Q0VBZ0 | CSK | Tyrosine-protein kinase CSK | Bos taurus (Bovine) | SS |
Q3ZC95 | BTK | Tyrosine-protein kinase | Bos taurus (Bovine) | EV SS |
P42683 | LCK | Proto-oncogene tyrosine-protein kinase LCK | Gallus gallus (Chicken) | SS |
P41239 | CSK | Tyrosine-protein kinase CSK | Gallus gallus (Chicken) | SS |
P00523 | SRC | Proto-oncogene tyrosine-protein kinase Src | Gallus gallus (Chicken) | EV |
Q02977 | YRK | Proto-oncogene tyrosine-protein kinase Yrk | Gallus gallus (Chicken) | SS |
Q8JH64 | BTK | Tyrosine-protein kinase BTK | Gallus gallus (Chicken) | SS |
P09324 | YES1 | Tyrosine-protein kinase Yes | Gallus gallus (Chicken) | SS |
Q05876 | FYN | Tyrosine-protein kinase Fyn | Gallus gallus (Chicken) | SS |
P08630 | Btk | Tyrosine-protein kinase Btk | Drosophila melanogaster (Fruit fly) | SS |
Q9V9J3 | Src42A | Tyrosine-protein kinase Src42A | Drosophila melanogaster (Fruit fly) | SS |
P00528 | Src64B | Tyrosine-protein kinase Src64B | Drosophila melanogaster (Fruit fly) | SS |
Q24592 | hop | Tyrosine-protein kinase hopscotch | Drosophila melanogaster (Fruit fly) | PR |
P41240 | CSK | Tyrosine-protein kinase CSK | Homo sapiens (Human) | SS |
P51451 | BLK | Tyrosine-protein kinase Blk | Homo sapiens (Human) | SS |
P06239 | LCK | Tyrosine-protein kinase Lck | Homo sapiens (Human) | EV |
P23458 | JAK1 | Tyrosine-protein kinase JAK1 | Homo sapiens (Human) | SS |
P06241 | FYN | Tyrosine-protein kinase Fyn | Homo sapiens (Human) | SS |
P51813 | BMX | Cytoplasmic tyrosine-protein kinase BMX | Homo sapiens (Human) | SS |
P12931 | SRC | Proto-oncogene tyrosine-protein kinase Src | Homo sapiens (Human) | EV |
P09769 | FGR | Tyrosine-protein kinase Fgr | Homo sapiens (Human) | SS |
P42680 | TEC | Tyrosine-protein kinase Tec | Homo sapiens (Human) | SS |
P42679 | MATK | Megakaryocyte-associated tyrosine-protein kinase | Homo sapiens (Human) | SS |
P52333 | JAK3 | Tyrosine-protein kinase JAK3 | Homo sapiens (Human) | SS |
Q08881 | ITK | Tyrosine-protein kinase ITK/TSK | Homo sapiens (Human) | EV |
P07948 | LYN | Tyrosine-protein kinase Lyn | Homo sapiens (Human) | SS |
P29597 | TYK2 | Non-receptor tyrosine-protein kinase TYK2 | Homo sapiens (Human) | EV |
Q13882 | PTK6 | Protein-tyrosine kinase 6 | Homo sapiens (Human) | EV |
P08631 | HCK | Tyrosine-protein kinase HCK | Homo sapiens (Human) | EV |
P07947 | YES1 | Tyrosine-protein kinase Yes | Homo sapiens (Human) | SS |
P42685 | FRK | Tyrosine-protein kinase FRK | Homo sapiens (Human) | EV |
Q06187 | BTK | Tyrosine-protein kinase BTK | Homo sapiens (Human) | EV |
O60674 | JAK2 | Tyrosine-protein kinase JAK2 | Homo sapiens (Human) | EV |
Q9R117 | Tyk2 | Non-receptor tyrosine-protein kinase TYK2 | Mus musculus (Mouse) | SS |
P08103 | Hck | Tyrosine-protein kinase HCK | Mus musculus (Mouse) | SS |
P16277 | Blk | Tyrosine-protein kinase Blk | Mus musculus (Mouse) | SS |
Q62270 | Srms | Tyrosine-protein kinase Srms | Mus musculus (Mouse) | SS |
Q64434 | Ptk6 | Protein-tyrosine kinase 6 | Mus musculus (Mouse) | SS |
P05480 | Src | Proto-oncogene tyrosine-protein kinase Src | Mus musculus (Mouse) | EV |
P14234 | Fgr | Tyrosine-protein kinase Fgr | Mus musculus (Mouse) | SS |
P35991 | Btk | Tyrosine-protein kinase BTK | Mus musculus (Mouse) | EV |
P41241 | Csk | Tyrosine-protein kinase CSK | Mus musculus (Mouse) | EV |
P25911 | Lyn | Tyrosine-protein kinase Lyn | Mus musculus (Mouse) | EV |
Q62137 | Jak3 | Tyrosine-protein kinase JAK3 | Mus musculus (Mouse) | SS |
P06240 | Lck | Proto-oncogene tyrosine-protein kinase LCK | Mus musculus (Mouse) | SS |
P24604 | Tec | Tyrosine-protein kinase Tec | Mus musculus (Mouse) | SS |
Q04736 | Yes1 | Tyrosine-protein kinase Yes | Mus musculus (Mouse) | SS |
P39688 | Fyn | Tyrosine-protein kinase Fyn | Mus musculus (Mouse) | SS |
P52332 | Jak1 | Tyrosine-protein kinase JAK1 | Mus musculus (Mouse) | SS |
Q03526 | Itk | Tyrosine-protein kinase ITK/TSK | Mus musculus (Mouse) | SS |
P41242 | Matk | Megakaryocyte-associated tyrosine-protein kinase | Mus musculus (Mouse) | SS |
Q922K9 | Frk | Tyrosine-protein kinase FRK | Mus musculus (Mouse) | SS |
Q62120 | Jak2 | Tyrosine-protein kinase JAK2 | Mus musculus (Mouse) | EV |
A1Y2K1 | FYN | Tyrosine-protein kinase Fyn | Sus scrofa (Pig) | SS |
O19064 | JAK2 | Tyrosine-protein kinase JAK2 | Sus scrofa (Pig) | SS |
Q62662 | Frk | Tyrosine-protein kinase FRK | Rattus norvegicus (Rat) | SS |
Q62844 | Fyn | Tyrosine-protein kinase Fyn | Rattus norvegicus (Rat) | SS |
Q07014 | Lyn | Tyrosine-protein kinase Lyn | Rattus norvegicus (Rat) | SS |
P50545 | Hck | Tyrosine-protein kinase HCK | Rattus norvegicus (Rat) | SS |
Q9WUD9 | Src | Proto-oncogene tyrosine-protein kinase Src | Rattus norvegicus (Rat) | SS |
Q01621 | Lck | Proto-oncogene tyrosine-protein kinase LCK | Rattus norvegicus (Rat) | SS |
Q6P6U0 | Fgr | Tyrosine-protein kinase Fgr | Rattus norvegicus (Rat) | SS |
Q63272 | Jak3 | Tyrosine-protein kinase JAK3 | Rattus norvegicus (Rat) | SS |
P32577 | Csk | Tyrosine-protein kinase CSK | Rattus norvegicus (Rat) | SS |
P41243 | Matk | Megakaryocyte-associated tyrosine-protein kinase | Rattus norvegicus (Rat) | SS |
F1LM93 | Yes1 | Tyrosine-protein kinase Yes | Rattus norvegicus (Rat) | SS |
Q62689 | Jak2 | Tyrosine-protein kinase JAK2 | Rattus norvegicus (Rat) | SS |
O45539 | src-2 | Tyrosine protein-kinase src-2 | Caenorhabditis elegans | SS |
G5ECJ6 | csk-1 | Tyrosine-protein kinase csk-1 | Caenorhabditis elegans | SS |
G5EE56 | src-1 | Tyrosine protein-kinase src-1 | Caenorhabditis elegans | SS |
A1A5H8 | yes1 | Tyrosine-protein kinase yes | Danio rerio (Zebrafish) (Brachydanio rerio) | SS |
F1RDG9 | fynb | Tyrosine-protein kinase fynb | Danio rerio (Zebrafish) (Brachydanio rerio) | SS |
O12990 | jak1 | Tyrosine-protein kinase JAK1 | Danio rerio (Zebrafish) (Brachydanio rerio) | PR |
Q1JPZ3 | src | Proto-oncogene tyrosine-protein kinase Src | Danio rerio (Zebrafish) (Brachydanio rerio) | SS |
Q6EWH2 | fyna | Tyrosine-protein kinase fyna | Danio rerio (Zebrafish) (Brachydanio rerio) | SS |
10 | 20 | 30 | 40 | 50 | 60 |
MACLTMANIE | GSATATVHQN | GDILGNTSAP | KQTEPLLQVY | LYYSPGKTGG | DYLQFPAGEY |
70 | 80 | 90 | 100 | 110 | 120 |
VAEEICIVAC | KACGIMPVYH | NMFALMSETE | RVWYPPNHIF | HVDEATRLKL | LYRIRFYFPH |
130 | 140 | 150 | 160 | 170 | 180 |
WYCNGTSRAC | RYGIIRGSES | PVLDDLVMSY | LFAQWRKDFL | DGWIQMPVTH | ETQEECLGMA |
190 | 200 | 210 | 220 | 230 | 240 |
VLDMMRVAKE | KDQTPLAVYN | SVSYKMFLPK | CVRAKIQEYH | ILTRKRIRYR | FRKFIQQFGQ |
250 | 260 | 270 | 280 | 290 | 300 |
CKATARNLKL | KYLINLETLQ | SAFYSEVFEV | KEPGGDPSGE | ESFATIVITG | NGGIQCSRGK |
310 | 320 | 330 | 340 | 350 | 360 |
LKNCETLAEQ | DLQTYCDFPD | IIDVSIKQAS | QEGSSERRIV | TIHKQDSKNL | EAEFQSLREA |
370 | 380 | 390 | 400 | 410 | 420 |
LSFVSLIDGY | YRLTADAHHY | LCKEVAPPSV | LENIQSNCHG | PIFMDFAINK | LKKAGNQTGF |
430 | 440 | 450 | 460 | 470 | 480 |
YVLRCSPKDF | KKYFLTFAIE | RENATDYKHC | LITKNENGEY | NLSGTKRSFG | NLKDLLTCYQ |
490 | 500 | 510 | 520 | 530 | 540 |
TETVRSDSII | FQFIKCCPPK | PKDKSNLLVF | RSNSVSDVPS | SPTLQRHNVS | QMVFHKIRNE |
550 | 560 | 570 | 580 | 590 | 600 |
DLIFEESLGQ | GTFTKIFKGI | RKEVGDYGQL | HQTEVLLKVL | DKVHRNYSES | FFEAASMMSQ |
610 | 620 | 630 | 640 | 650 | 660 |
LSYKHLVLNY | GVCVCGEENI | LVQEYVKFGS | LDTYLKKNKN | VINILWKLEV | AKQLALAMHF |
670 | 680 | 690 | 700 | 710 | 720 |
LEDKGLVHGN | VCAKNILLIR | EEDRKSGNLP | FIKLSDPGIS | ITVLPRDILL | ERIPWVPPEC |
730 | 740 | 750 | 760 | 770 | 780 |
IENPRQLSLA | TDKWSFGTTL | WEICSGGDKP | LSALDSSRKL | QFYEDRHQLP | APNWTELANL |
790 | 800 | 810 | 820 | 830 | 840 |
INNCMDYEPD | FRPSFRAIIR | DLNSLFTPDY | ELLTENDMLP | NIRTGALGFS | GAFEDRDPTQ |
850 | 860 | 870 | 880 | 890 | 900 |
FEERHLKFLQ | QLGKGNFGSV | EMCRYDPLQD | NTGEVVAVKK | LQHSTEEHLR | DFEREIEILK |
910 | 920 | 930 | 940 | 950 | 960 |
SLQHDNIVKY | KGVCYSAGRR | NLRLIMEYLP | YGSLRDYLQK | HKERLDHKKL | LLYASQICKG |
970 | 980 | 990 | 1000 | 1010 | 1020 |
MEYLGTKRYV | HRDLATRNIL | VENENRVKIG | DFGLTKVLPQ | DKEYYKVKEP | GESPIFWYAP |
1030 | 1040 | 1050 | 1060 | 1070 | 1080 |
ESLTESKFSV | ASDVWSFGVV | LYELFTYIEK | SKSPPAEFMR | MIGNDKQGQM | IVFHLIELLK |
1090 | 1100 | 1110 | 1120 | ||
NNGRLPRPDG | CPDEIYAIMK | ECWNNNVAQR | PTFRDLAQRV | DQIRDNMGG |