Summary

Name JAK3
Full Name Tyrosine-protein kinase JAK3
Synonyms Janus kinase 3, JAK-3, Leukocyte janus kinase, L-JAK
Primary ID P52333
Links - -
Type protein
Relations 35
Pathways FAP: IL15
Inhibitors tofacitinib; ruxolitinib; 9-(1-Methyl-4-pyrazolyl)-1-[1-(1-oxoprop-2-enyl)-2,3-dihydroindol-6-yl]-2-benzo[h][1,6]naphthyridinone; TG101209; tofacitinib citrate; AT9283
Function Non-receptor tyrosine kinase involved in various processes such as cell growth, development, or differentiation. Mediates essential signaling events in both innate and adaptive immunity and plays a crucial role in hematopoiesis during T-cells development. In the cytoplasm, plays a pivotal role in signal transduction via its association with type I receptors sharing the common subunit gamma such as IL2R, IL4R, IL7R, IL9R, IL15R and IL21R. 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, upon IL2R activation by IL2, JAK1 and JAK3 molecules bind to IL2R beta (IL2RB) and gamma chain (IL2RG) subunits inducing the tyrosine phosphorylation of both receptor subunits on their cytoplasmic domain. Then, STAT5A AND STAT5B are recruited, phosphorylated and activated by JAK1 and JAK3. Once activated, dimerized STAT5 translocates to the nucleus and promotes the transcription of specific target genes in a cytokine-specific fashion.

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Modifications Tables

Relations

Regulator Mechanism target score
+ up-regulates activity img/direct-activation.png phosphorylation JAK1 0.509
Publications: 2 Organism: In Vitro
+ up-regulates img/direct-activation.png phosphorylation PLD2 0.423
Publications: 1 Organism: Homo Sapiens
+ up-regulates img/direct-activation.png phosphorylation SIGLEC10 0.2
Publications: 2 Organism: Homo Sapiens
+ img/unknown.png phosphorylation SIGLEC10 0.2
Publications: 1 Organism: Homo Sapiens
+ up-regulates img/direct-activation.png phosphorylation STAT5A 0.85
Publications: 2 Organism: Homo Sapiens
+ up-regulates img/direct-activation.png phosphorylation JAK3 0.2
Publications: 4 Organism: Homo Sapiens
+ down-regulates img/direct_inhibition.png phosphorylation JAK3 0.2
Publications: 1 Organism: Homo Sapiens
+ down-regulates activity img/direct_inhibition.png chemical inhibition JAK3 0.8
Publications: 1 Organism: In Vitro
+ down-regulates img/direct_inhibition.png chemical inhibition JAK3 0.8
Publications: 1 Organism: Homo Sapiens
+ up-regulates img/direct-activation.png phosphorylation, JAK3 0.478
Publications: 2 Organism: Homo Sapiens
+ up-regulates img/direct-activation.png dephosphorylation JAK3 0.47
Publications: 1 Organism: Homo Sapiens
+ down-regulates activity img/direct_inhibition.png chemical inhibition JAK3 0.8
Publications: 1 Organism: In Vitro
+ down-regulates activity img/direct_inhibition.png dephosphorylation JAK3 0.47
Publications: 1 Organism: Mus Musculus
+ up-regulates img/direct-activation.png dephosphorylation JAK3 0.673
Publications: 1 Organism: Homo Sapiens
+ up-regulates img/indirect-activation.png JAK3 0.66
Publications: 1 Organism: Homo Sapiens
+ down-regulates activity img/direct_inhibition.png dephosphorylation JAK3 0.681
Publications: 1 Organism: Homo Sapiens
+ up-regulates img/indirect-activation.png JAK3 0.509
Publications: 1 Organism: Homo Sapiens
+ down-regulates activity img/direct_inhibition.png binding JAK3 0.685
Publications: 1 Organism: Homo Sapiens
+ down-regulates img/direct_inhibition.png chemical inhibition JAK3 0.8
Publications: 1 Organism: Homo Sapiens
+ up-regulates img/direct-activation.png phosphorylation STAT3 0.786
Publications: 1 Organism: Homo Sapiens
+ up-regulates img/direct-activation.png binding JAK3 0.539
Publications: 1 Organism: Homo Sapiens
+ up-regulates img/direct-activation.png phosphorylation JAK1 0.509
Publications: 1 Organism: Homo Sapiens
+ up-regulates img/direct-activation.png phosphorylation JAK3 0.509
Publications: 1 Organism: Homo Sapiens
+ down-regulates img/direct_inhibition.png chemical inhibition JAK3 0.8
Publications: 1 Organism: Homo Sapiens
+ up-regulates img/direct-activation.png binding JAK3 0.737
Publications: 1 Organism: Homo Sapiens
+ down-regulates img/direct_inhibition.png chemical inhibition JAK3 0.8
Publications: 1 Organism: Homo Sapiens
+ down-regulates activity img/direct_inhibition.png binding JAK3 0.695
Publications: 1 Organism: Homo Sapiens
+ down-regulates activity img/direct_inhibition.png chemical inhibition JAK3 0.8
Publications: 1 Organism: In Vitro