The distinguishing feature between janus kinase 2 and other JAK kinases is the lack of Src homology binding domains (SH2/SH3) and the presence of up to seven JAK homology domains (JH1-JH7). Nonetheless the terminal JH domains retain a high level of homology to tyrosine kinase domains. An interesting note is that only one of these carboxy-terminal JH domains retains full kinase function (JH1) while the other (JH2), previously thought to have no kinase functionality and accordingly termed a pseudokinase domain, has since been found to be catalytically active, albeit at only 10% that of the JH1 domain.[3][4]
Loss of Jak2 is lethal by embryonic day 12 in mice.[5]
JAK2orthologs[6] have been identified in all mammals for which complete genome data are available.
JAK2 gene fusions with the TEL(ETV6) (TEL-JAK2) and PCM1 genes have been found in patients suffering leukemia, particularly clonal eosinophilia forms of the disease.[7][8][9] Jak - 2 kinase mutations were found to have a high correlation with abnormal heart defects in those of Southeast Asian descent carrying the PYFA gene.[7][8]
↑Bole-Feysot C, Goffin V, Edery M, Binart N, Kelly PA (June 1998). "Prolactin (PRL) and its receptor: actions, signal transduction pathways and phenotypes observed in PRL receptor knockout mice". Endocrine Reviews. 19 (3): 225–68. doi:10.1210/er.19.3.225. PMID9626554.
↑Brooks AJ, Dai W, O'Mara ML, Abankwa D, Chhabra Y, Pelekanos RA, et al. (2014). "Mechanism of activation of protein kinase JAK2 by the growth hormone receptor". Science. 344 (6185). doi:10.1126/science.1249783. PMID24833397.
↑Neubauer H, Cumano A, Müller M, Wu H, Huffstadt U, Pfeffer K (May 1998). "Jak2 deficiency defines an essential developmental checkpoint in definitive hematopoiesis". Cell. 93 (3): 397–409. doi:10.1016/S0092-8674(00)81168-X. PMID9590174.
↑ 7.07.1Lacronique V, Boureux A, Valle VD, Poirel H, Quang CT, Mauchauffé M, Berthou C, Lessard M, Berger R, Ghysdael J, Bernard OA (November 1997). "A TEL-JAK2 fusion protein with constitutive kinase activity in human leukemia". Science. 278 (5341): 1309–12. doi:10.1126/science.278.5341.1309. PMID9360930.
↑ 8.08.1Reiter A, Walz C, Watmore A, Schoch C, Blau I, Schlegelberger B, Berger U, Telford N, Aruliah S, Yin JA, Vanstraelen D, Barker HF, Taylor PC, O'Driscoll A, Benedetti F, Rudolph C, Kolb HJ, Hochhaus A, Hehlmann R, Chase A, Cross NC (April 2005). "The t(8;9)(p22;p24) is a recurrent abnormality in chronic and acute leukemia that fuses PCM1 to JAK2". Cancer Research. 65 (7): 2662–7. doi:10.1158/0008-5472.CAN-04-4263. PMID15805263.
↑Kralovics R, Passamonti F, Buser AS, Teo SS, Tiedt R, Passweg JR, Tichelli A, Cazzola M, Skoda RC (April 2005). "A gain-of-function mutation of JAK2 in myeloproliferative disorders". The New England Journal of Medicine. 352 (17): 1779–90. doi:10.1056/NEJMoa051113. PMID15858187.
↑Gu L, Liao Z, Hoang DT, Dagvadorj A, Gupta S, Blackmon S, Ellsworth E, Talati P, Leiby B, Zinda M, Lallas CD, Trabulsi EJ, McCue P, Gomella L, Huszar D, Nevalainen MT (October 2013). "Pharmacologic inhibition of Jak2-Stat5 signaling By Jak2 inhibitor AZD1480 potently suppresses growth of both primary and castrate-resistant prostate cancer". Clinical Cancer Research. 19 (20): 5658–74. doi:10.1158/1078-0432.CCR-13-0422. PMID23942095.
↑Scott LM (August 2011). "The JAK2 exon 12 mutations: a comprehensive review". American Journal of Hematology. 86 (8): 668–76. doi:10.1002/ajh.22063. PMID21674578.
↑Sarkar S, Pollack BP, Lin KT, Kotenko SV, Cook JR, Lewis A, Pestka S (December 2001). "hTid-1, a human DnaJ protein, modulates the interferon signaling pathway". The Journal of Biological Chemistry. 276 (52): 49034–42. doi:10.1074/jbc.M103683200. PMID11679576.
↑Olayioye MA, Beuvink I, Horsch K, Daly JM, Hynes NE (June 1999). "ErbB receptor-induced activation of stat transcription factors is mediated by Src tyrosine kinases". The Journal of Biological Chemistry. 274 (24): 17209–18. doi:10.1074/jbc.274.24.17209. PMID10358079.
↑Huang LJ, Constantinescu SN, Lodish HF (December 2001). "The N-terminal domain of Janus kinase 2 is required for Golgi processing and cell surface expression of erythropoietin receptor". Molecular Cell. 8 (6): 1327–38. doi:10.1016/S1097-2765(01)00401-4. PMID11779507.
↑Witthuhn BA, Quelle FW, Silvennoinen O, Yi T, Tang B, Miura O, Ihle JN (July 1993). "JAK2 associates with the erythropoietin receptor and is tyrosine phosphorylated and activated following stimulation with erythropoietin". Cell. 74 (2): 227–36. doi:10.1016/0092-8674(93)90414-L. PMID8343951.
↑Sayeski PP, Ali MS, Safavi A, Lyles M, Kim SO, Frank SJ, Bernstein KE (November 1999). "A catalytically active Jak2 is required for the angiotensin II-dependent activation of Fyn". The Journal of Biological Chemistry. 274 (46): 33131–42. doi:10.1074/jbc.274.46.33131. PMID10551884.
↑Giorgetti-Peraldi S, Peyrade F, Baron V, Van Obberghen E (December 1995). "Involvement of Janus kinases in the insulin signaling pathway". European Journal of Biochemistry / FEBS. 234 (2): 656–60. doi:10.1111/j.1432-1033.1995.656_b.x. PMID8536716.
↑Frank SJ, Yi W, Zhao Y, Goldsmith JF, Gilliland G, Jiang J, Sakai I, Kraft AS (June 1995). "Regions of the JAK2 tyrosine kinase required for coupling to the growth hormone receptor". The Journal of Biological Chemistry. 270 (24): 14776–85. doi:10.1074/jbc.270.24.14776. PMID7540178.
↑VanderKuur JA, Wang X, Zhang L, Campbell GS, Allevato G, Billestrup N, Norstedt G, Carter-Su C (August 1994). "Domains of the growth hormone receptor required for association and activation of JAK2 tyrosine kinase". The Journal of Biological Chemistry. 269 (34): 21709–17. PMID8063815.
↑Hellgren G, Jansson JO, Carlsson LM, Carlsson B (June 1999). "The growth hormone receptor associates with Jak1, Jak2 and Tyk2 in human liver". Growth Hormone & IGF Research. 9 (3): 212–8. doi:10.1054/ghir.1999.0111. PMID10502458.
↑Gual P, Baron V, Lequoy V, Van Obberghen E (March 1998). "Interaction of Janus kinases JAK-1 and JAK-2 with the insulin receptor and the insulin-like growth factor-1 receptor". Endocrinology. 139 (3): 884–93. doi:10.1210/endo.139.3.5829. PMID9492017.
↑Yamamoto K, Shibata F, Miura O, Kamiyama R, Hirosawa S, Miyasaka N (April 1999). "Physical interaction between interleukin-12 receptor beta 2 subunit and Jak2 tyrosine kinase: Jak2 associates with cytoplasmic membrane-proximal region of interleukin-12 receptor beta 2 via amino-terminus". Biochemical and Biophysical Research Communications. 257 (2): 400–4. doi:10.1006/bbrc.1999.0479. PMID10198225.
↑Ogata N, Kouro T, Yamada A, Koike M, Hanai N, Ishikawa T, Takatsu K (April 1998). "JAK2 and JAK1 constitutively associate with an interleukin-5 (IL-5) receptor alpha and betac subunit, respectively, and are activated upon IL-5 stimulation". Blood. 91 (7): 2264–71. PMID9516124.
↑ 27.027.127.2Fuhrer DK, Yang YC (July 1996). "Complex formation of JAK2 with PP2A, P13K, and Yes in response to the hematopoietic cytokine interleukin-11". Biochemical and Biophysical Research Communications. 224 (2): 289–96. doi:10.1006/bbrc.1996.1023. PMID8702385.
↑Zhu T, Goh EL, Lobie PE (April 1998). "Growth hormone stimulates the tyrosine phosphorylation and association of p125 focal adhesion kinase (FAK) with JAK2. Fak is not required for stat-mediated transcription". The Journal of Biological Chemistry. 273 (17): 10682–9. doi:10.1074/jbc.273.17.10682. PMID9553131.
↑Ryu H, Lee JH, Kim KS, Jeong SM, Kim PH, Chung HT (August 2000). "Regulation of neutrophil adhesion by pituitary growth hormone accompanies tyrosine phosphorylation of Jak2, p125FAK, and paxillin". Journal of Immunology. 165 (4): 2116–23. doi:10.4049/jimmunol.165.4.2116. PMID10925297.
↑Yin T, Shen R, Feng GS, Yang YC (January 1997). "Molecular characterization of specific interactions between SHP-2 phosphatase and JAK tyrosine kinases". The Journal of Biological Chemistry. 272 (2): 1032–7. doi:10.1074/jbc.272.2.1032. PMID8995399.
↑Tauchi T, Damen JE, Toyama K, Feng GS, Broxmeyer HE, Krystal G (June 1996). "Tyrosine 425 within the activated erythropoietin receptor binds Syp, reduces the erythropoietin required for Syp tyrosine phosphorylation, and promotes mitogenesis". Blood. 87 (11): 4495–501. PMID8639815.
↑Maegawa H, Kashiwagi A, Fujita T, Ugi S, Hasegawa M, Obata T, Nishio Y, Kojima H, Hidaka H, Kikkawa R (November 1996). "SHPTP2 serves adapter protein linking between Janus kinase 2 and insulin receptor substrates". Biochemical and Biophysical Research Communications. 228 (1): 122–7. doi:10.1006/bbrc.1996.1626. PMID8912646.
↑Wu DW, Stark KC, Dunnington D, Dillon SB, Yi T, Jones C, Pelus LM (February 2000). "SH2-Containing protein tyrosine phosphatase-1 (SHP-1) association with Jak2 in UT-7/Epo cells". Blood Cells, Molecules & Diseases. 26 (1): 15–24. doi:10.1006/bcmd.2000.0273. PMID10772872.
↑Pollack BP, Kotenko SV, He W, Izotova LS, Barnoski BL, Pestka S (October 1999). "The human homologue of the yeast proteins Skb1 and Hsl7p interacts with Jak kinases and contains protein methyltransferase activity". The Journal of Biological Chemistry. 274 (44): 31531–42. doi:10.1074/jbc.274.44.31531. PMID10531356.
↑Xie S, Lin H, Sun T, Arlinghaus RB (October 2002). "Jak2 is involved in c-Myc induction by Bcr-Abl". Oncogene. 21 (47): 7137–46. doi:10.1038/sj.onc.1205942. PMID12370803.
↑VanderKuur J, Allevato G, Billestrup N, Norstedt G, Carter-Su C (March 1995). "Growth hormone-promoted tyrosyl phosphorylation of SHC proteins and SHC association with Grb2". The Journal of Biological Chemistry. 270 (13): 7587–93. doi:10.1074/jbc.270.13.7587. PMID7535773.
↑Giordano V, De Falco G, Chiari R, Quinto I, Pelicci PG, Bartholomew L, Delmastro P, Gadina M, Scala G (May 1997). "Shc mediates IL-6 signaling by interacting with gp130 and Jak2 kinase". Journal of Immunology. 158 (9): 4097–103. PMID9126968.
↑Sasaki A, Yasukawa H, Shouda T, Kitamura T, Dikic I, Yoshimura A (September 2000). "CIS3/SOCS-3 suppresses erythropoietin (EPO) signaling by binding the EPO receptor and JAK2". The Journal of Biological Chemistry. 275 (38): 29338–47. doi:10.1074/jbc.M003456200. PMID10882725.
↑Sasaki A, Yasukawa H, Suzuki A, Kamizono S, Syoda T, Kinjyo I, Sasaki M, Johnston JA, Yoshimura A (June 1999). "Cytokine-inducible SH2 protein-3 (CIS3/SOCS3) inhibits Janus tyrosine kinase by binding through the N-terminal kinase inhibitory region as well as SH2 domain". Genes to Cells. 4 (6): 339–51. doi:10.1046/j.1365-2443.1999.00263.x. PMID10421843.
↑ 42.042.1Masuhara M, Sakamoto H, Matsumoto A, Suzuki R, Yasukawa H, Mitsui K, Wakioka T, Tanimura S, Sasaki A, Misawa H, Yokouchi M, Ohtsubo M, Yoshimura A (October 1997). "Cloning and characterization of novel CIS family genes". Biochemical and Biophysical Research Communications. 239 (2): 439–46. doi:10.1006/bbrc.1997.7484. PMID9344848.
↑ 43.043.1Barahmand-Pour F, Meinke A, Groner B, Decker T (May 1998). "Jak2-Stat5 interactions analyzed in yeast". The Journal of Biological Chemistry. 273 (20): 12567–75. doi:10.1074/jbc.273.20.12567. PMID9575217.
↑ 44.044.1Fujitani Y, Hibi M, Fukada T, Takahashi-Tezuka M, Yoshida H, Yamaguchi T, Sugiyama K, Yamanaka Y, Nakajima K, Hirano T (February 1997). "An alternative pathway for STAT activation that is mediated by the direct interaction between JAK and STAT". Oncogene. 14 (7): 751–61. doi:10.1038/sj.onc.1200907. PMID9047382.
↑Takeshita T, Arita T, Higuchi M, Asao H, Endo K, Kuroda H, Tanaka N, Murata K, Ishii N, Sugamura K (April 1997). "STAM, signal transducing adaptor molecule, is associated with Janus kinases and involved in signaling for cell growth and c-myc induction". Immunity. 6 (4): 449–57. doi:10.1016/S1074-7613(00)80288-5. PMID9133424.
↑Dif F, Saunier E, Demeneix B, Kelly PA, Edery M (December 2001). "Cytokine-inducible SH2-containing protein suppresses PRL signaling by binding the PRL receptor". Endocrinology. 142 (12): 5286–93. doi:10.1210/endo.142.12.8549. PMID11713228.
↑Endo TA, Masuhara M, Yokouchi M, Suzuki R, Sakamoto H, Mitsui K, Matsumoto A, Tanimura S, Ohtsubo M, Misawa H, Miyazaki T, Leonor N, Taniguchi T, Fujita T, Kanakura Y, Komiya S, Yoshimura A (June 1997). "A new protein containing an SH2 domain that inhibits JAK kinases". Nature. 387 (6636): 921–4. doi:10.1038/43213. PMID9202126.
↑Pezet A, Favre H, Kelly PA, Edery M (August 1999). "Inhibition and restoration of prolactin signal transduction by suppressors of cytokine signaling". The Journal of Biological Chemistry. 274 (35): 24497–502. doi:10.1074/jbc.274.35.24497. PMID10455112.
↑Takahashi-Tezuka M, Hibi M, Fujitani Y, Fukada T, Yamaguchi T, Hirano T (May 1997). "Tec tyrosine kinase links the cytokine receptors to PI-3 kinase probably through JAK". Oncogene. 14 (19): 2273–82. doi:10.1038/sj.onc.1201071. PMID9178903.
↑Yamashita Y, Watanabe S, Miyazato A, Ohya Ki, Ikeda U, Shimada K, Komatsu N, Hatake K, Miura Y, Ozawa K, Mano H (March 1998). "Tec and Jak2 kinases cooperate to mediate cytokine-driven activation of c-fos transcription". Blood. 91 (5): 1496–507. PMID9473212.
↑Guo D, Dunbar JD, Yang CH, Pfeffer LM, Donner DB (March 1998). "Induction of Jak/STAT signaling by activation of the type 1 TNF receptor". Journal of Immunology. 160 (6): 2742–50. PMID9510175.
↑Shigematsu H, Iwasaki H, Otsuka T, Ohno Y, Arima F, Niho Y (May 1997). "Role of the vav proto-oncogene product (Vav) in erythropoietin-mediated cell proliferation and phosphatidylinositol 3-kinase activity". The Journal of Biological Chemistry. 272 (22): 14334–40. doi:10.1074/jbc.272.22.14334. PMID9162069.
Berger R (May 2006). "[A recurrent mutation of the JAK2 gene in chronic myeloproliferative disorders]". Pathologie-Biologie. 54 (4): 182–4. doi:10.1016/j.patbio.2005.07.002. PMID16084028.
Pargade V, Darnige L, Gaussem P (2006). "[Acquired mutation of JAK2 tyrosine kinase and polycythaemia vera]". Annales De Biologie Clinique. 64 (1): 3–9. PMID16420986.
Staerk J, Kallin A, Royer Y, Diaconu CC, Dusa A, Demoulin JB, Vainchenker W, Constantinescu SN (March 2007). "JAK2, the JAK2 V617F mutant and cytokine receptors". Pathologie-Biologie. 55 (2): 88–91. doi:10.1016/j.patbio.2006.06.003. PMID16904848.
Hsu HC (March 2007). "Pathogenetic role of JAK2 V617F mutation in chronic myeloproliferative disorders". Journal of the Chinese Medical Association. 70 (3): 89–93. doi:10.1016/S1726-4901(09)70337-5. PMID17389152.