Is predicted to encode a protein with the following domains: Short-chain dehydrogenase/reductase SDR; short chain dehydrogenase; Caenorhabditis protein of unknown function, DUF267; Lysosomal cystine transporter; NAD(P)-binding domain superfamily; PQ-loop repeat; Protein of unknown function DUF267, Caenorhabditis species; and PQ loop repeat. Is an ortholog of C. elegans
ctns-1. In C. elegans,
ctns-1 is involved in L-cystine transport; lysosome organization; and phagocytosis.