Markus Piotrowski (IMAGE) Ruhr-University Bochum Caption Markus Piotrowski in front of a collage; an image of nitrilase helices taken with an electron microscope is shown at the bottom, a reconstruction of the spiral (calculated from the electron-microscope image) on the right, and the model of a single nitrilase enzyme on the left. Credit RUB, Marquard Usage Restrictions The image may only be used for reporting about the Ruhr-Universitaet Bochum in the context of the press release "External structure can affect the function of enzymes ", published in november 2018. 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.