Modular structure of 4.5SH RNA (IMAGE) Hokkaido University Caption Modular structure of 4.5SH RNA. The sensor module (target binding via base-pairing) recognizes and binds to abnormal sequences. The effector binding module brings in molecules that modulate alternative splicing to prevent incorporation of abnormal sequences in mRNA. (Illustration: Shinichi Nakagawa) Credit Shinichi Nakagawa Usage Restrictions This image is copyrighted but may be used to report on this press release as long as the copyright holder is credited. License Original 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.