Membrane Lipids (IMAGE) Goethe University Frankfurt Caption The Researchers revealed that the sensing mechanism is based on two cylinder-shaped structures which are positioned next to each other in biological membranes. Credit GU Usage Restrictions None 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.