Phospholipase A1 is an enzyme that plays a crucial role in the breakdown of phospholipids, which are essential components of cell membranes. It specifically hydrolyzes the fatty acid at the sn-1 position of phospholipids, releasing free fatty acids and lysolipids. This process is important for various cellular functions, including membrane remodeling and signaling. The activity of Phospholipase A1 is significant in several biological processes, such as inflammation and cell signaling. It is found in various organisms, including humans, and is involved in the metabolism of lipids. Understanding this enzyme can provide insights into its potential roles in health and disease.