Enables glutathione peroxidase activity and glutathione transferase activity. Involved in response to salicylic acid. Acts upstream of or within glutathione metabolic process. Located in cytosol and nucleus. Biomarker of Charcot-Marie-Tooth disease. Orthologous to human GSTT2 (glutathione S-transferase theta 2 (gene/pseudogene)). [provided by Alliance of Genome Resources, Apr 2022]