Enzyme research (IMAGE) Graz University of Technology Caption The Graz researchers are the first in the world to demonstrate "YeiN", an enzyme that is a suitable biocatalyst for the production of C-nucleosides, the basic building blocks of RNA. (Symbolic photo from enzyme research) Credit Lunghammer - TU Graz 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.