Predicted to enable cholesterol binding activity. Predicted to be involved in several processes, including negative regulation of endocytosis; positive regulation of protein phosphorylation; and regulation of GTPase activity. Located in cell surface; plasma membrane; and prominosome. Is expressed in several structures, including alimentary system; brain; genitourinary system; lung; and naris epithelium. Orthologous to human PROM2 (prominin 2). [provided by Alliance of Genome Resources, Apr 2022]