Transporter that may play a role in monocyte differentiation and lipid transport and homeostasis. Widely expressed with higher expression in heart. Expressed in fetal tissues with higher expression in fetal heart and kidney. Up-regulated during monocyte differentiation into macrophages. Down-regulated by cholesterol loading of macrophages. Belongs to the ABC transporter superfamily. ABCA family. Truncated N-terminus. Truncated N-terminus. Database for mutations in ABC proteins