Glycosylphosphatidylinositol-anchored high-density lipoprotein-binding protein 1 (gpihbp1) is a specialized protein that plays a crucial role in lipid metabolism. It is primarily known for binding and transporting lipoprotein lipase (LPL) to the capillary lumen, where LPL can catalyze the hydrolysis of triglycerides in lipoproteins, thereby facilitating the uptake of fatty acids by tissues.