Hamartin is a protein that plays a crucial role in cellular processes, particularly in the regulation of cell growth and division. It is part of a larger protein complex known as mTOR, which is essential for controlling various cellular functions, including metabolism and autophagy. Hamartin is encoded by the TSC1 gene, and mutations in this gene can lead to tuberous sclerosis complex, a genetic disorder characterized by the growth of benign tumors in multiple organs. Understanding hamartin's function is important for developing potential therapies for conditions related to its dysfunction.