mTOR (image) Johns Hopkins Medicine Share Print E-Mail Caption A protein called mTOR receives information from these signals and then directs the cell to take action. And now, with data from cells and mice, researchers at Johns Hopkins Medicine say they have uncovered a long-sought built-in molecular switch that behaves much like a car-brake -- slowing mTOR's action -- and in this particular study prevents overworked hearts from enlarging. WATCH: Shrinking Diseased Hearts by Putting the Brakes on a Master Growth Controller Hyperlink: https://www.youtube.com/watch?time_continue=4&v=vrUFOMZCItM Credit Johns Hopkins Medicine Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.