期刊
CELL CYCLE
卷 6, 期 14, 页码 1692-1695出版社
TAYLOR & FRANCIS INC
DOI: 10.4161/cc.6.14.4478
关键词
TSC; Rheb; mTOR; Tor2; fission yeast
类别
资金
- NCI NIH HHS [CA41996] Funding Source: Medline
The TSC/Rheb/TOR signaling pathway plays important roles in growth and cell cycle regulation. The main player TOR belongs to the PI3K- related protein kinase family. Recent studies utilizing fission yeast Tor2 have led to the identification of a number of amino acid changes that lead to inactivation as well as activation of TOR kinase. Also, constitutive active mutations in its upstream regulator, Rheb, have been identified. Isolation and characterization of temperature sensitive Tor2 mutants have established that this kinase functions as a key switch that determines cell fate between growth and sexual development. Introduction of Tor2 activating mutations into mTOR conferred nutrient independent activation of mTOR. Interestingly, these studies point to regions of TOR kinase important for its function.
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