Secondary structures of rRNAs from all three domains of life.

TitleSecondary structures of rRNAs from all three domains of life.
Publication TypeJournal Article
Year of Publication2014
AuthorsPetrov AS, Bernier CR, Gulen B, Waterbury CC, Hershkovits E, Hsiao C, Harvey SC, Hud NV, Fox GE, Wartell RM, Williams LD
JournalPloS one
Date Published2014
KeywordsAnimals, Base Pairing, Drosophila melanogaster, Haloarcula marismortui, Humans, Models, Molecular, Molecular Sequence Data, Nucleic Acid Conformation, Phylogeny, RNA, Archaeal, RNA, Bacterial, RNA, Fungal, RNA, Ribosomal, Saccharomyces cerevisiae, Thermus thermophilus

Accurate secondary structures are important for understanding ribosomes, which are extremely large and highly complex. Using 3D structures of ribosomes as input, we have revised and corrected traditional secondary (2°) structures of rRNAs. We identify helices by specific geometric and molecular interaction criteria, not by co-variation. The structural approach allows us to incorporate non-canonical base pairs on parity with Watson-Crick base pairs. The resulting rRNA 2° structures are up-to-date and consistent with three-dimensional structures, and are information-rich. These 2° structures are relatively simple to understand and are amenable to reproduction and modification by end-users. The 2° structures made available here broadly sample the phylogenetic tree and are mapped with a variety of data related to molecular interactions and geometry, phylogeny and evolution. We have generated 2° structures for both large subunit (LSU) 23S/28S and small subunit (SSU) 16S/18S rRNAs of Escherichia coli, Thermus thermophilus, Haloarcula marismortui (LSU rRNA only), Saccharomyces cerevisiae, Drosophila melanogaster, and Homo sapiens. We provide high-resolution editable versions of the 2° structures in several file formats. For the SSU rRNA, the 2° structures use an intuitive representation of the central pseudoknot where base triples are presented as pairs of base pairs. Both LSU and SSU secondary maps are available ( Mapping of data onto 2° structures was performed on the RiboVision server (

Alternate JournalPLoS ONE