Predicted to enable leucine binding activity and oxidoreductase activity, acting on peroxide as acceptor. Involved in cellular response to amino acid stimulus; negative regulation of TORC1 signaling; and negative regulation of cell growth. Acts upstream of or within regulation of protein kinase B signaling. Predicted to be located in cytoplasm; fibrillar center; and nucleoplasm. Predicted to be part of GATOR2 complex. Is expressed in several structures, including alimentary system; brain; cardiovascular system; genitourinary system; and immune system. Orthologous to human SESN1 (sestrin 1). [provided by Alliance of Genome Resources, Apr 2022]