Enriched in ADEshL; ADEshR; NSM; intestine; and in male based on RNA-seq; single-cell RNA-seq; and microarray studies. Is affected by several genes including daf-2; skn-1; and eat-2 based on microarray and RNA-seq studies. Is affected by eight chemicals including methylmercuric chloride; multi-walled carbon nanotube; and Cry5B based on microarray and RNA-seq studies. Is predicted to encode a protein with the following domain: Uncharacterized protein ZC21.8.