A compilation of posttranscriptional modification sites in RNA from the small ribosomal subunit. Includes identities of modified nucleosides if known, and provision for comparison of modifications in aligned sequences from Bacteria, Archaea and Eukarya.

This compilation contains 3279 sequences of tRNAs and tRNA genes covering the literature up to December 1996.
Searches can now be performed using the Utah mirror interface.

The website from John Santalucia's group (Wayne State University) contains AMBER parameters for all 103 modifications known to exist in RNA. The links to each one of the modification contain downloadable AMBER parameter files and the input and output files used in developing the parameters.

The tmRNA website was established in 1997 as a resource for phylogenetic considerations of tmRNA structure and function. Since then, three partial tmRNA sequences have been completed, and sequences from 13 more species have been identified. Forty-six species from 10 bacterial phyla and chloroplasts are now represented in the database. Provisional sequence alignments and predicted proteolysis tag sequences are provided, as well as a literature review and a guide to searching for new tmRNA sequences.

The tmRDB is a tool in the study of the structures and functions of the tmRNA (earlier called "10S RNA"). As the name implies, tmRNA has properties of tRNA and mRNA combined in a single molecule. The tmRDB provides aligned, annotated and phylogenetically ordered tmRNA sequences.

Curation of RNA transcripts with non-protein-coding functions.

Small Nucleolar RNAs (snoRNAs) from the Yeast Saccharomyces cerevisiae.