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Energy dependent regulation of mTOR by LKB1-AMPK

Reactome ID: R-HSA-380972

中文名称

LKB1-AMPK 通过能量依赖方式调节 mTOR

通路描述

在形成三聚体 LKB1:STRAD:MO25 复合物后,LKB1 磷酸化并激活 AMPK。这种磷酸化在基础条件下立即被 PP2C 去除,但如果细胞 AMP:ATP 比值升高,这种激活则得以维持,因为 AMP 与 AMPK 的结合抑制了去磷酸化。AMPK 然后磷酸化 TSC2 以激活 TSC 复合物。活性 TSC 激活 Rheb 的内源性 GTP 酶活性,导致 GDP 负载的 Rheb 和 mTOR 通路的抑制。
英文描述
Energy dependent regulation of mTOR by LKB1-AMPK Upon formation of a trimeric LKB1:STRAD:MO25 complex, LKB1 phosphorylates and activates AMPK. This phosphorylation is immediately removed in basal conditions by PP2C, but if the cellular AMP:ATP ratio rises, this activation is maintained, as AMP binding by AMPK inhibits the dephosphorylation. AMPK then activates the TSC complex by phosphorylating TSC2. Active TSC activates the intrinsic GTPase activity of Rheb, resulting in GDP-loaded Rheb and inhibition of mTOR pathway.

所含基因

29 个基因