Acyl-CoA is a molecule formed when a fatty acid binds to coenzyme A. This process is essential for the metabolism of fatty acids, allowing them to be transported into the mitochondria for energy production. Acyl-CoA plays a crucial role in the breakdown of fats, which is vital for energy supply in cells. In addition to energy production, acyl-CoA is involved in the synthesis of lipids and other important biomolecules. It serves as a building block for the formation of triglycerides and phospholipids, which are essential components of cell membranes and energy storage in the body.