MiaB bound to tRNA (IMAGE) Penn State Caption A new study by Penn State researchers has revealed the chemical steps involved in adding an important tag—a methyl sulfur group—to transfer RNA, a process that, if interfered with in humans, can lead to neuronal diseases, diabetes, and cancers. Credit Booker Lab, Penn State Usage Restrictions Credit must be given to the creator. License CC BY 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.