Membrane Enzymes 'Stop and Frisk' (IMAGE) Johns Hopkins Medicine Caption Caption: Rhomboid proteases "stop and frisk" all protein "prey" in the membrane indiscriminately. The rhomboid protease cuts slowly so that stable proteins can escape from being cut, but too slow unstable proteins get the chop. Credit Credit: Sin Urban lab Usage Restrictions Please credit the lab License Licensed content 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.