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Details on Person Activated AMPK (phosphorylated on the alpha subunit and with...
| Class:Id | Summation:381836 |
|---|---|
| _displayName | Activated AMPK (phosphorylated on the alpha subunit and with... |
| _timestamp | 2026-02-18 04:33:39 |
| created | [InstanceEdit:381843] Jassal, B, 2008-11-21 15:07:04 |
| literatureReference | [LiteratureReference:377264] PRAS40 is an insulin-regulated inhibitor of the mTORC1 protein kinase [LiteratureReference:200166] Insulin signalling to mTOR mediated by the Akt/PKB substrate PRAS40 |
| modified | [InstanceEdit:381856] Jassal, B, 2008-11-21 15:08:38 [InstanceEdit:447056] Jassal, B, 2009-11-20 [InstanceEdit:5672806] Jupe, Steve, 2015-02-06 [InstanceEdit:5686414] Jupe, Steve, 2015-04-01 [InstanceEdit:8855991] Orlic-Milacic, Marija, 2016-02-08 [InstanceEdit:9982496] Orlic-Milacic, Marija, 2026-02-18 |
| text | Activated AMPK (phosphorylated on the alpha subunit and with AMP bound) phosphorylates TSC2 (also known as tuberin) on Ser-1387, thereby activating the GTPase activating protein (GAP) activity of the Tuberous Sclerosis Complex (TSC). The TSC tumor suppressor is a critical upstream inhibitor of the mTORC1 complex. TSC is a GTPase-activating protein that stimulates the intrinsic GTPase activity of the small G-protein Rheb. This inactivates Rheb by stimulating its GTPase activity. The GDP-bound form of Rheb loses the ability to activate the kinase activity of the mTORC1 complex (Sancak et al. 2007). Loss of TSC1 or TSC2 leads to hyperactivation of mTORC1. Phosphorylation of TSC1 and TSC2 serves as an integration point for a wide variety of environmental signals that regulate mTORC1 (Sabatini 2006). Mitogen-activated kinases including Akt, Erk, and Rsk directly phosphorylate TSC2, leading to its inactivation by an unknown mechanism. Another Akt substrate, PRAS40, was recently shown to bind and inhibit the mTORC1 complex. Upon phosphorylation by Akt, PRAS40 no longer inhibits mTORC1 (Sancak et al. 2007; Vander Haar et al. 2007). |
| (summation) | [Reaction:380927] p-AMPK phosphorylates TSC1:TSC2 [Homo sapiens] |
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