Enriched in cephalic sheath cell; excretory cell; and neurons based on tiling array and RNA-seq studies. Is affected by several genes including qui-1; etr-1; and rsd-2 based on microarray and RNA-seq studies. Is affected by five chemicals including Psoralens; allantoin; and rifampin based on RNA-seq studies. Is predicted to encode a protein with the following domains: Vitelline membrane outer layer protein I (VOMI) superfamily and Vitelline membrane outer layer protein I (VOMI).