SNA and L-aTNA (IMAGE) Nagoya University Caption SNA and L-aTNA, comprising a serinol and L-threoninol backbone, respectively, can hybridize with RNA. This study determined the crystal structures of dimers of hetero duplex of L-aTNA/RNA and SNA/RNA stabilized by Hoogsteen base pairs. Credit Yukiko Kamiya 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.