Predicted to be involved in detection of light stimulus involved in visual perception and regulation of intracellular transport. Predicted to be located in several cellular components, including endoplasmic reticulum membrane; photoreceptor inner segment; and rod spherule. Human ortholog(s) of this gene implicated in retinitis pigmentosa 77. Orthologous to human REEP6 (receptor accessory protein 6). [provided by Alliance of Genome Resources, Apr 2022]