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Aims/hypothesis TBC1D1 (tre-2/USP6, BUB2, cdc16 domain family member 1) is a Rab GTPase-activating protein (RabGAP) that has been implicated in regulating GLUT4 trafficking. TBC1D1 can be phosphorylated by the AMP-activated protein kinase (AMPK) on Ser231, which consequently interacts with 14-3-3 proteins. Given the key role for AMPK in regulating insulin-independent muscle glucose uptake, we hypothesised...
Here we show that 14-3-3 proteins bind to Pim kinase-phosphorylated Ser166 and Ser186 on the human E3 ubiquitin ligase mouse double minute 2 (Mdm2), but not protein kinase B (PKB)/Akt-phosphorylated Ser166 and Ser188. Pim-mediated phosphorylation of Ser186 blocks phosphorylation of Ser188 by PKB, indicating potential interplay between the Pim and PKB signaling pathways in regulating Mdm2. In cells,...
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