Enriched in excretory gland cell; pharyngeal cell; and touch receptor neurons based on tiling array; microarray; proteomic; and single-cell RNA-seq studies. Is affected by several genes including daf-2; skn-1; and rrf-3 based on microarray; RNA-seq; tiling array; and proteomic studies. Is affected by thirteen chemicals including rotenone; stavudine; and Zidovudine based on RNA-seq and microarray studies. Human ortholog(s) of this gene implicated in asthma and ovarian cancer. Human GSTA1 enables several functions, including glutathione peroxidase activity; glutathione transferase activity; and steroid delta-isomerase activity. Is predicted to encode a protein with the following domains: Glutathione S-transferase, C-terminal domain superfamily; Glutathione S-transferase, C-terminal; and Glutathione S-transferase, C-terminal domain. Is an ortholog of several human genes including GSTA1 (glutathione S-transferase alpha 1); GSTA2 (glutathione S-transferase alpha 2); and GSTA3 (glutathione S-transferase alpha 3).