Nanchung (Nan) protein, an ion channel subunit similar to vanilloid-receptor-related (TRPV) channels of the TRP superfamily, required for hearing in Drosophila; Nan mediates hypo-osmotically activated calcium influx and cation currents in cultured cells; it is expressed in vivo exclusively in chordotonal neurons and is localized to their sensory cilia; RefSeq NM_140439