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Molecule Details

General Information of the Molecule
Name
Janus kinase 2 (JAK-2)
Synonyms
Tyrosine-protein kinase JAK2
Gene Name
JAK2
Gene ID
3717
Sequence
MGMACLTMTEMEGTSTSSIYQNGDISGNANSMKQIDPVLQVYLYHSLGKSEADYLTFPSG
EYVAEEICIAASKACGITPVYHNMFALMSETERIWYPPNHVFHIDESTRHNVLYRIRFYF
PRWYCSGSNRAYRHGISRGAEAPLLDDFVMSYLFAQWRHDFVHGWIKVPVTHETQEECLG
MAVLDMMRIAKENDQTPLAIYNSISYKTFLPKCIRAKIQDYHILTRKRIRYRFRRFIQQF
SQCKATARNLKLKYLINLETLQSAFYTEKFEVKEPGSGPSGEEIFATIIITGNGGIQWSR
GKHKESETLTEQDLQLYCDFPNIIDVSIKQANQEGSNESRVVTIHKQDGKNLEIELSSLR
EALSFVSLIDGYYRLTADAHHYLCKEVAPPAVLENIQSNCHGPISMDFAISKLKKAGNQT
GLYVLRCSPKDFNKYFLTFAVERENVIEYKHCLITKNENEEYNLSGTKKNFSSLKDLLNC
YQMETVRSDNIIFQFTKCCPPKPKDKSNLLVFRTNGVSDVPTSPTLQRPTHMNQMVFHKI
RNEDLIFNESLGQGTFTKIFKGVRREVGDYGQLHETEVLLKVLDKAHRNYSESFFEAASM
MSKLSHKHLVLNYGVCVCGDENILVQEFVKFGSLDTYLKKNKNCINILWKLEVAKQLAWA
MHFLEENTLIHGNVCAKNILLIREEDRKTGNPPFIKLSDPGISITVLPKDILQERIPWVP
PECIENPKNLNLATDKWSFGTTLWEICSGGDKPLSALDSQRKLQFYEDRHQLPAPKWAEL
ANLINNCMDYEPDFRPSFRAIIRDLNSLFTPDYELLTENDMLPNMRIGALGFSGAFEDRD
PTQFEERHLKFLQQLGKGNFGSVEMCRYDPLQDNTGEVVAVKKLQHSTEEHLRDFEREIE
ILKSLQHDNIVKYKGVCYSAGRRNLKLIMEYLPYGSLRDYLQKHKERIDHIKLLQYTSQI
CKGMEYLGTKRYIHRDLATRNILVENENRVKIGDFGLTKVLPQDKEYYKVKEPGESPIFW
YAPESLTESKFSVASDVWSFGVVLYELFTYIEKSKSPPAEFMRMIGNDKQGQMIVFHLIE
LLKNNGRLPRPDGCPDEIYMIMTECWNNNVNQRPSFRDLALRVDQIRDNMAG
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Function
Non-receptor tyrosine kinase involved in various processes such as cell growth, development, differentiation or histone modifications. Mediates essential signaling events in both innate and adaptive immunity. In the cytoplasm, plays a pivotal role in signal transduction via its association with type I receptors such as growth hormone (GHR), prolactin (PRLR), leptin (LEPR), erythropoietin (EPOR), thrombopoietin (THPO); or type II receptors including IFN-alpha, IFN-beta, IFN-gamma and multiple interleukins. 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.
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Uniprot ID
JAK2_HUMAN
EC Number
EC: 2.7.10.2
Pfam
PF18379 ; PF18377 ; PF17887 ; PF07714 ; PF00017
KEGG ID
hsa3717
TTD ID
T08391
A List of Drug Combination(s) Able to Regulate This Molecule
          Phosphorylation Regulation     Click to Show/Hide the Drug Combination Regulating This Molecule
                 Down-regulation     Click to Show/Hide
                    Drug Combination 1 Down-regulating the Phosphorylation of This Molecule [1]
                    Detail(s)  Combination Info  click to show the detail info of this combination
                    Name Curcumin   NP Info  + Sorafenib   Drug Info 
                    Structure +
                    Drug Combination 2 Down-regulating the Phosphorylation of This Molecule [2]
                    Detail(s)  Combination Info  click to show the detail info of this combination
                    Name Elemene   NP Info  + Cisplatin   Drug Info 
                    Structure +
                 Up-regulation     Click to Show/Hide
                    Drug Combination 1 Up-regulating the Phosphorylation of This Molecule [4]
                    Detail(s)  Combination Info  click to show the detail info of this combination
                    Name Arsenic trioxide   NP Info  + GM-CSF   Drug Info 
                    Structure +
                    Drug Combination 2 Up-regulating the Phosphorylation of This Molecule [5]
                    Detail(s)  Combination Info  click to show the detail info of this combination
                    Name Lycopene   NP Info  + Anti-PD-1 antibody   Drug Info 
                    Structure +
          Expression Regulation     Click to Show/Hide the Drug Combination Regulating This Molecule
                 Up-regulation     Click to Show/Hide
                    Drug Combination 1 Up-regulating the Expression of This Molecule [3]
                    Detail(s)  Combination Info  click to show the detail info of this combination
                    Name Anisodamine   NP Info  + Neostigmine   Drug Info 
                    Structure +
References
Reference 1 Combinatorial anticancer effects of curcumin and sorafenib towards thyroid cancer cells via PI3K/Akt and ERK pathways. Nat Prod Res. 2016 Aug;30(16):1858-61.
Reference 2 beta-Elemene, a novel plant-derived antineoplastic agent, increases cisplatin chemosensitivity of lung tumor cells by triggering apoptosis. Oncol Rep. 2009 Jul;22(1):161-70.
Reference 3 Combined administration of anisodamine and neostigmine rescued acute lethal crush syndrome through Alpha7nAChR-dependent JAK2-STAT3 signaling. Sci Rep. 2016 Nov 22;6:37709.
Reference 4 A novel differentiation-inducing therapy for acute promyelocytic leukemia with a combination of arsenic trioxide and GM-CSF. Leukemia. 2001 Aug;15(8):1176-84.
Reference 5 Lycopene improves the efficiency of anti-PD-1 therapy via activating IFN signaling of lung cancer cells. Cancer Cell Int. 2019 Mar 21;19:68.
Cite NPCDR
Visitor Map
Correspondence

X. N. Sun, Y. T. Zhang, Y. Zhou, X. C. Lian, L. L. Yan, T. Pan, T. Jin, H. Xie, Z. M. Liang, W. Q. Qiu, J. X. Wang, Z. R. Li, F. Zhu*, X. B. Sui*. NPCDR: natural product-based drug combination and its disease-specific molecular regulation. Nucleic Acids Research. 50(D1): 1324-1333 (2020). PMID: 34664659

Prof. Feng ZHU  (zhufeng@zju.edu.cn)

College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China


Prof. Xinbing SUI  (hzzju@hznu.edu.cn)

School of Pharmacy and Department of Medical Oncology, the Affiliated Hospital of Hangzhou Normal University, Hangzhou Normal University, Hangzhou, China