Enriched in several structures, including germ line; hypodermis; intestine; sensory neurons; and ventral nerve cord based on tiling array; RNA-seq; and microarray studies. Is affected by several genes including daf-2; hsf-1; and sir-2.1 based on microarray and RNA-seq studies. Is affected by nine chemicals including hydrogen sulfide; rotenone; and D-glucose based on microarray and RNA-seq studies.