Flpp3 (IMAGE) Arizona State University Caption Comparison of the structures of the Flpp3 protein backbone as derived from an X-ray free electron laser (red) and from NMR (blue) reveals an internal cavity that is unique to the NMR structure and therefore suggests the existence of intermediate protein structures. Credit James Zook 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.