Cover image

Group I self-splicing intron P4-P6 domain mutant U131A (Protein Data Bank code: 6d8l; Shoffner GM, Wang R, Podell E, Cech TR, Guo F. 2018. In Crystallo selection to establish new RNA crystal contacts. Structure 26: 1275–1283). The RNA intron backbone is displayed as an orange ribbon; bases are shown as blocks with NDB coloring: A—red, C—yellow, G—green, U—cyan. The image was generated using 3DNA/blocview and PyMol software. Cover image provided by the Nucleic Acid Database (ndbserver.rutgers.edu).