RNA in 3-D (IMAGE) International School of Advanced Studies (SISSA) Caption This image shows a three-dimensional distribution of nucleobases obtained from the crystal structure of a ribosomal RNA molecule. Different colours correspond to the different interaction types: Watson-Crick pairs in red/orange, non-canonical interactions in blue, stacked pairs in green. Credit SISSA 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.