Functions of Normal and Oncogenic RNF43 (IMAGE) Hokkaido University Caption Normal RNF43 acts as a tumor suppressor when activated by the addition of phosphate groups (phosphorylation), whereas mutant RNF43 cannot be phosphorylated due to the oncogenic mutations. (Tadasuke Tsukiyama, et al., Nature Communications, September 15, 2020) Credit Tadasuke Tsukiyama, et al., Nature Communications, September 15, 2020 Usage Restrictions This image is copyrighted but may be used to report this release if credited as instructed. 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.