Predicted to enable several functions, including adenyl ribonucleotide binding activity; protein dimerization activity; and sterol transporter activity. Involved in positive regulation of insulin secretion involved in cellular response to glucose stimulus and positive regulation of secretory granule organization. Predicted to be located in external side of plasma membrane; mitochondrion; and recycling endosome. Predicted to be active in plasma membrane. Orthologous to human ABCG1 (ATP binding cassette subfamily G member 1). [provided by Alliance of Genome Resources, Apr 2022]