Crystal Structure of TYRP1 (IMAGE) European Synchrotron Radiation Facility Caption This is a crystal structure of TYRP1. Tyrosine (the substrate metabolised by TYPR1, in deepteal colour) is bound to the active site, where the zinc metal ions (red spheres) coordinate the functional role. Credit @Montse Lopez Usage Restrictions Credits mentions 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.