Sphingosine is a type of amino alcohol that plays a crucial role in the structure of cell membranes. It is a key component of sphingolipids, which are important for cell signaling and maintaining the integrity of cells. Sphingosine is produced in the body from serine and palmitic acid and is involved in various biological processes. In addition to its structural role, sphingosine is also involved in regulating cell growth and apoptosis, or programmed cell death. It can be converted into other bioactive molecules, such as sphingosine-1-phosphate, which has significant functions in the immune system and cardiovascular health.