Predicted to enable bitter taste receptor activity. Predicted to be involved in detection of chemical stimulus involved in sensory perception of bitter taste. Predicted to act upstream of or within respiratory gaseous exchange by respiratory system. Predicted to be located in ciliary membrane. Predicted to be integral component of membrane. Orthologous to human TAS2R4 (taste 2 receptor member 4). [provided by Alliance of Genome Resources, Apr 2022]