Predicted to enable high-density lipoprotein particle receptor binding activity; lipase inhibitor activity; and phospholipid binding activity. Involved in several processes, including lipoprotein transport; negative regulation of oxidative phosphorylation; and positive regulation of triglyceride biosynthetic process. Located in extracellular space. Used to study hyperthyroidism; hypothyroidism; and type 1 diabetes mellitus. Biomarker of cholestasis. Human ortholog(s) of this gene implicated in several diseases, including apolipoprotein C-III deficiency; chronic kidney disease; coronary artery disease; familial hyperlipidemia (multiple); and glucose metabolism disease (multiple). Orthologous to human APOC3 (apolipoprotein C3). [provided by Alliance of Genome Resources, Apr 2022]