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. 2003 Aug 1;17(15):1829–1834. doi: 10.1101/gad.1110003

Figure 5.

Figure 5.

A proposed model of Rheb functions downstream of TSC1/TSC2 and upstream of mTOR. TSC2 acts as a GAP to inactivate Rheb by directly stimulating GTP hydrolysis. Rheb stimulates mTOR. Nutrient and cellular energy status signals through Rheb, whereas osmotic stress signals independently of Rheb.