mLST8 is a protein that plays a crucial role in the mTOR signaling pathway, which is important for cell growth, proliferation, and survival. It is a component of the mTORC1 complex, helping to regulate various cellular processes in response to nutrients and growth factors. In addition to its role in cell signaling, mLST8 is involved in the regulation of metabolism and autophagy. Dysregulation of mLST8 and the mTOR pathway has been linked to various diseases, including cancer and metabolic disorders, making it a significant focus of research in cellular biology and medicine.