mTORC1-independent Raptor prevents hepatic steatosis by stabilizing PHLPP2

Abstract

The protein raptor is a subunit of the mTORC signalling complex. Here the authors show that Raptor also exists in a free form, unbound to mTORC, and that this free Raptor negatively regulates hepatic Akt activity and lipid metabolism in mice via a mechanism involving the Akt phosphatase PHLPP2.