Involved in photoreceptor cell maintenance. Located in apical plasma membrane and photoreceptor inner segment. Is expressed in several structures, including alimentary system; eye; genitourinary system; hemolymphoid system gland; and nervous system. Human ortholog(s) of this gene implicated in cone-rod dystrophy. Orthologous to human DRAM2 (DNA damage regulated autophagy modulator 2). [provided by Alliance of Genome Resources, Apr 2022]