Mtor inhibition. mTOR is a kinase protein predominantly found in the cytoplasm of the cell. It acts as a central regulator of many biological processes that are essential for cell proliferation, angiogenesis, and cell metabolism.1-3 mTOR exerts its effects primarily by turning on and off the cell's translational machinery, which includes the ribosomes, and is responsible for protein synthesis. http://www.targetmtor.com/health-care-professional/mtor/index.jsp