Glucocerebroside is a type of lipid, specifically a glycosphingolipid, that is found in cell membranes. It consists of a sugar molecule attached to a fatty acid and is primarily located in the brain and other tissues. Glucocerebroside plays a role in cellular signaling and maintaining the structure of cell membranes. In the human body, glucocerebroside is broken down by an enzyme called glucocerebrosidase. A deficiency in this enzyme can lead to the accumulation of glucocerebroside, resulting in a genetic disorder known as Gaucher's disease. This condition can cause various symptoms, including enlargement of the liver and spleen, bone pain, and fatigue.