Descriptions

Jak2 is a member of the Janus (Jak) family of non-receptor protein tyrosine kinases (Jak1, Jak2, Jak3, and Tyk2) and is crucial in signaling through multiple cytokine receptors. Jak2 has a kinase domain (JH1) and pseudokinase domain (JH2). JH2 has three regions for autoinhibition of JH1: IR3 (758-807) directly inhibits JH1, and IR2 (725-757) and IR1 (619-670) enhances IR3-mediated inhibition of JH1.

Autoinhibitory domains (AIDs)

Target domain

818-1098 (Protein kinase domain)

Relief mechanism

Partner binding

Assay

Target domain

818-1098 (Protein kinase domain)

Relief mechanism

Partner binding

Assay

Target domain

818-1098 (Protein kinase domain)

Relief mechanism

Partner binding

Assay

Accessory elements

No accessory elements

Autoinhibited structure

Activated structure

1 structures for Q63272

Entry ID Method Resolution Chain Position Source
AF-Q63272-F1 Predicted AlphaFoldDB

No variants for Q63272

Variant ID(s) Position Change Description Diseaes Association Provenance
No variants for Q63272

No associated diseases with Q63272

14 regional properties for Q63272

Type Name Position InterPro Accession
domain FERM domain 24 - 353 IPR000299
domain Protein kinase domain 517 - 777 IPR000719-1
domain Protein kinase domain 818 - 1091 IPR000719-2
domain SH2 domain 370 - 474 IPR000980
domain Serine-threonine/tyrosine-protein kinase, catalytic domain 517 - 773 IPR001245-1
domain Serine-threonine/tyrosine-protein kinase, catalytic domain 819 - 1091 IPR001245-2
active_site Tyrosine-protein kinase, active site 941 - 953 IPR008266
binding_site Protein kinase, ATP binding site 824 - 851 IPR017441
domain Band 4.1 domain 20 - 254 IPR019749
domain Tyrosine-protein kinase, catalytic domain 517 - 773 IPR020635-1
domain Tyrosine-protein kinase, catalytic domain 818 - 1091 IPR020635-2
domain JAK, FERM F2 lobe domain 126 - 245 IPR041046
domain FERM F1 lobe ubiquitin-like domain 39 - 114 IPR041155
domain JAK1-3/TYK2, pleckstrin homology-like domain 280 - 354 IPR041381

Functions

Description
EC Number 2.7.10.2 Protein-tyrosine kinases
Subcellular Localization
  • Endomembrane system ; Peripheral membrane protein
  • Cytoplasm
PANTHER Family
PANTHER Subfamily
PANTHER Protein Class
PANTHER Pathway Category No pathway information available

4 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.
extrinsic component of cytoplasmic side of plasma membrane The component of a plasma membrane consisting of gene products and protein complexes that are loosely bound to its cytoplasmic surface, but not integrated into the hydrophobic region.

5 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.
non-membrane spanning protein tyrosine kinase activity Catalysis of the reaction
protein phosphatase binding Binding to a protein phosphatase.
protein tyrosine kinase activity Catalysis of the reaction

35 GO annotations of biological process

Name Definition
adaptive immune response An immune response mediated by cells expressing specific receptors for antigens produced through a somatic diversification process, and allowing for an enhanced secondary response to subsequent exposures to the same antigen (immunological memory).
B cell differentiation The process in which a precursor cell type acquires the specialized features of a B cell. A B cell is a lymphocyte of B lineage with the phenotype CD19-positive and capable of B cell mediated immunity.
cell differentiation The cellular developmental process in which a relatively unspecialized cell, e.g. embryonic or regenerative cell, acquires specialized structural and/or functional features that characterize a specific cell. Differentiation includes the processes involved in commitment of a cell to a specific fate and its subsequent development to the mature state.
cellular response to cytokine stimulus Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a cytokine stimulus.
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.
enzyme-linked receptor protein signaling pathway The series of molecular signals initiated by an extracellular ligand binding to a receptor on the surface of the target cell, where the receptor possesses catalytic activity or is closely associated with an enzyme such as a protein kinase, and ending with the regulation of a downstream cellular process, e.g. transcription.
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.
innate immune response Innate immune responses are defense responses mediated by germline encoded components that directly recognize components of potential pathogens.
interleukin-15-mediated signaling pathway The series of molecular signals initiated by interleukin-15 binding to its receptor on the surface of a target cell, and ending with the regulation of a downstream cellular process, e.g. transcription.
interleukin-2-mediated signaling pathway The series of molecular signals initiated by interleukin-2 binding to its receptor on the surface of a cell, and ending with the regulation of a downstream cellular process, e.g. transcription.
interleukin-4-mediated signaling pathway The series of molecular signals initiated by interleukin-4 binding to its receptor on the surface of a target cell, and ending with the regulation of a downstream cellular process, e.g. transcription.
interleukin-9-mediated signaling pathway The series of molecular signals initiated by interleukin-9 binding to its receptor on the surface of a target cell, and ending with the regulation of a downstream cellular process, e.g. transcription.
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.
negative regulation of dendritic cell cytokine production Any process that stops, prevents, or reduces the frequency, rate, or extent of dendritic cell cytokine production.
negative regulation of FasL production Any process that stops, prevents, or reduces the frequency, rate or extent of the chemical reactions and pathways resulting in the formation of FasL.
negative regulation of interleukin-10 production Any process that stops, prevents, or reduces the frequency, rate, or extent of interleukin-10 production.
negative regulation of interleukin-12 production Any process that stops, prevents, or reduces the frequency, rate, or extent of interleukin-12 production.
negative regulation of T cell activation Any process that stops, prevents, or reduces the frequency, rate or extent of T cell activation.
negative regulation of T-helper 1 cell differentiation Any process that stops, prevents, or reduces the frequency, rate or extent of T-helper 1 cell differentiation.
negative regulation of thymocyte apoptotic process Any process that stops, prevents, or reduces the frequency, rate or extent of thymocyte death by apoptotic process.
peptidyl-tyrosine phosphorylation The phosphorylation of peptidyl-tyrosine to form peptidyl-O4'-phospho-L-tyrosine.
positive regulation of activated T cell proliferation Any process that activates or increases the rate or extent of activated T cell proliferation.
positive regulation of calcium ion transport Any process that activates or increases the frequency, rate or extent of the directed movement of calcium ions into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
positive regulation of cytosolic calcium ion concentration Any process that increases the concentration of calcium ions in the cytosol.
positive regulation of dendritic cell apoptotic process Any process that activates or increases the frequency, rate or extent of dendritic cell apoptotic process.
positive regulation of extrinsic apoptotic signaling pathway in absence of ligand Any process that activates or increases the frequency, rate or extent of extrinsic apoptotic signaling pathway in absence of ligand.
positive regulation of nitric-oxide synthase biosynthetic process Any process that activates or increases the frequency, rate or extent of the chemical reactions and pathways resulting in the formation of a nitric oxide synthase enzyme.
positive regulation of T cell proliferation Any process that activates or increases the rate or extent of T cell proliferation.
positive regulation of transcription by RNA polymerase II Any process that activates or increases the frequency, rate or extent of transcription from an RNA polymerase II promoter.
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.
regulation of T cell apoptotic process Any process that modulates the occurrence or rate of T cell death by apoptotic process.
response to interleukin-4 Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of an interleukin-4 stimulus.
T cell homeostasis The process of regulating the proliferation and elimination of T cells such that the total number of T cells within a whole or part of an organism is stable over time in the absence of an outside stimulus.
transcription by RNA polymerase II The synthesis of RNA from a DNA template by RNA polymerase II (RNAP II), originating at an RNA polymerase II promoter. Includes transcription of messenger RNA (mRNA) and certain small nuclear RNAs (snRNAs).

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
Q75R65 JAK2 Tyrosine-protein kinase JAK2 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
O60674 JAK2 Tyrosine-protein kinase JAK2 Homo sapiens (Human) EV
P42679 MATK Megakaryocyte-associated tyrosine-protein kinase 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
P52333 JAK3 Tyrosine-protein kinase JAK3 Homo sapiens (Human) SS
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
Q62120 Jak2 Tyrosine-protein kinase JAK2 Mus musculus (Mouse) EV
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
Q62137 Jak3 Tyrosine-protein kinase JAK3 Mus musculus (Mouse) SS
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
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
MAPPSEETPL ISQRSCSLSS SEAGALHVLL PPRGPGPPQR LSFSFGDYLA EDLCVRAAKA
70 80 90 100 110 120
CGILPVYHSL FALATEDLSC WFPPSHIFSI EDVDTQVLVY RLRFYFPGWF GLETCHRFGL
130 140 150 160 170 180
HKDLTSAILD VHVLEHLFAQ HRSDLVSGRL PVGLSLKDQG EFLSLAVLDL AQMARKQAQR
190 200 210 220 230 240
PGELLKSVSY KACLPPSLRD LIQGQSFVTR RRIRRTVVQA LRRVVACQAD RYALMAKYIL
250 260 270 280 290 300
DLERLHPAAT TESFLVGLPG AQEEPGCLRV TGDNGIAWSS KDQELFQTFC DFPEIVDVSI
310 320 330 340 350 360
KQAPRVGPAG EHRLVTITRM DGHILEAEFP GLPEALSFVA LVDGYFRLIC DSRHFFCKEV
370 380 390 400 410 420
APPRLLEEEA ELCHGPITLD FAIHKLKAAG SLPGSYILRR SPQDYDSFLL TACVQTPLGP
430 440 450 460 470 480
DYKGCLIRQD PSGAFSLVGL SQLHRSLQEL LTACWHSGLQ VDGTALNLTS CCVPRPKEKS
490 500 510 520 530 540
NLIVVRRGRN PTPAPGHSPS CCALTKLSFH TIPADSLEWH ENLGHGSFTK IFHGHRREVV
550 560 570 580 590 600
DGETHDTEVL LKVMDSRHQN CMESFLEAAS LMSQVSYPHL VLLHGVCMAG DSIMVQEFVY
610 620 630 640 650 660
LGAIDTYLRK RGHLVPASWK LQVTKQLAYA LNYLEDKGLP HGNVSARKVL LAREGVDGNP
670 680 690 700 710 720
PFIKLSDPGV SPTVLSLEML TDRIPWVAPE CLQEAGTLNL EADKWGFGAT TWEVFSGAPM
730 740 750 760 770 780
HITSLEPAKK LKFYEDRGQL PALKWTELEG LIAQCMAYDP GRRPSFRAIL RDLNGLITSD
790 800 810 820 830 840
YELLSDPTPG IPNPRDELCG GAQLYACQDP AIFEERHLKY ISLLGKGNFG SVELCRYDPL
850 860 870 880 890 900
GDNTGPLVAV KQLQHSGPEQ QRDFQREIQI LKALHCDFIV KYRGVSYGPG RQSLRLVMEY
910 920 930 940 950 960
LPSGCLRDFL QRHRARLHND RLLLFAWQIC KGMEYLGARR CVHRDLAARN ILVESEAHVK
970 980 990 1000 1010 1020
IADFGLAKLL PLGKDYYVVR EPGQSPIFWY APESLSDNIF SRQSDVWSFG VVLYELFTYS
1030 1040 1050 1060 1070 1080
DKSCSPSTEF LRMMGPEREG SPLCHLLELL AEGRRLPPPS TCPTEVQELM QLCWSPNPQD
1090
RPAFDTLSPQ LDALWRGSPG