Predicted to enable G protein-coupled receptor binding activity; G-protein beta/gamma-subunit complex binding activity; and GTPase activity. Involved in several processes, including detection of chemical stimulus involved in sensory perception of bitter taste; positive regulation of cytosolic calcium ion concentration; and response to light intensity. Located in photoreceptor inner segment and photoreceptor outer segment. Human ortholog(s) of this gene implicated in achromatopsia 4 and color blindness. Orthologous to human GNAT2 (G protein subunit alpha transducin 2). [provided by Alliance of Genome Resources, Apr 2022]