Predicted to enable GABA-A receptor activity and extracellular ligand-gated monoatomic ion channel activity. Predicted to be involved in monoatomic ion transmembrane transport. Predicted to be located in membrane. Is an ortholog of C. elegans exp-1; lgc-35; and lgc-38. In C. elegans, exp-1 is involved in several processes, including lipid transport involved in lipid storage; metal ion transport; and positive regulation of multicellular organismal process.