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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Janus kinase ： ウィキペディア英語版 Janus kinase Janus kinase (JAK) is a family of intracellular, nonreceptor tyrosine kinases that transduce cytokine-mediated signals via the JAK-STAT pathway. They were initially named "just another kinase" 1 and 2 (since they were just two of a large number of discoveries in a PCR-based screen of kinases,) but were ultimately published as "Janus kinase". The name is taken from the two-faced Roman god of beginnings and endings, Janus, because the JAKs possess two near-identical phosphate-transferring domains. One domain exhibits the kinase activity, while the other negatively regulates the kinase activity of the first. ==Family== The four JAK family members are: * Janus kinase 1 (JAK1) * Janus kinase 2 (JAK2) * Janus kinase 3 (JAK3) * Tyrosine kinase 2 (TYK2) Transgenic mice that do not express JAK1 have defective responses to some cytokines, such as interferon-gamma. JAK1 and JAK2 are involved in type II interferon (interferon-gamma) signalling, whereas JAK1 and TYK2 are involved in type I interferon signalling. Mice that do not express TYK2 have defective natural killer cell function. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Janus kinase」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.