Predicted to enable leucine binding activity and oxidoreductase activity, acting on peroxide as acceptor. Involved in several processes, including TORC2 signaling; glucose homeostasis; and regulation of signal transduction. Acts upstream of or within regulation of protein kinase B signaling. Part of TORC2 complex. Orthologous to human SESN3 (sestrin 3). [provided by Alliance of Genome Resources, Apr 2022]