A proton Ferris wheel in action (IMAGE) DOE/SLAC National Accelerator Laboratory Caption This animation, based on simulations and cryo-EM images, shows a top-down view of the V-ATPase proton pump Ferris wheel as it rotates clockwise. As each Ferris wheel seat arrives at the drop-off point - at the top of the rotation here - its proton passenger hops off and is guided by water molecules to its destination in the organelle's interior (green ribbons). A study by researchers from SLAC National Accelerator Laboratory, Stanford University, SUNY Upstate Medical University and Arizona State University revealed key details of this drop-off. Credit S.-H.Roh et al., Science Advances, 7 October 2020 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.