Enables cholesterol binding activity and cholesterol transfer activity. Involved in cellular response to cholesterol. Located in endoplasmic reticulum membrane; endoplasmic reticulum-plasma membrane contact site; and plasma membrane. Is expressed in several structures, including alimentary system; brain; reproductive system; respiratory system; and ventricular layer. Orthologous to human GRAMD1C (GRAM domain containing 1C). [provided by Alliance of Genome Resources, Apr 2022]