Enriched in several structures, including cholinergic neurons; coelomocyte; intestine; sperm; and ventral nerve cord based on tiling array; RNA-seq; single-cell RNA-seq; and microarray studies. Is affected by several genes including daf-2; daf-12; and hsf-1 based on microarray and RNA-seq studies. Is affected by twenty-three chemicals including hydrogen sulfide; Ethanol; and methylmercury hydroxide based on microarray and RNA-seq studies.