Predicted to enable glutathione peroxidase activity and glutathione transferase activity. Predicted to be located in intracellular membrane-bounded organelle. Is expressed in several structures, including adult heart; embryonic/larval nervous system; fat body; gonad; and gut section. Orthologous to human MGST1 (microsomal glutathione S-transferase 1). [provided by Alliance of Genome Resources, Apr 2022]