Enriched in several structures, including amphid neurons; amphid sheath cell; germ line; male distal tip cell; and somatic gonad precursor based on tiling array; RNA-seq; and single-cell RNA-seq studies. Is affected by several genes including cyc-1; swsn-1; and atfs-1 based on microarray and RNA-seq studies. Is affected by sixteen chemicals including Cry5B; Zidovudine; and Psoralens based on RNA-seq and microarray studies. Is predicted to encode a protein with the following domains: Domain of unknown function (DUF3557) and Protein of unknown function DUF3557.