Predicted to enable extracellular ligand-gated monoatomic ion channel activity and transmembrane signaling receptor activity. Predicted to be involved in monoatomic ion transmembrane transport. Predicted to be located in membrane. Is an ortholog of C. elegans pbo-5. In C. elegans, pbo-5 is involved in defecation; lipid transport involved in lipid storage; and positive regulation of multicellular organismal process.