The RNA modification database provides a comprehensive listing of posttranscriptionally modified nucleosides from RNA, and is maintained as an updated version of the initial printed report [Limbach,P.A., Crain,P.F. and McCloskey,J.A. (1994)Nucleic Acids Res., 22, 2183–2196]. Information provided for each nucleoside includes: the type of RNA in which it occurs and phylogenetic distribution; common chemiand symbol; Chemical Abstracts registry number and index name; chemical structure; initial literature citations for structural characterization or occurrence, and for chemical synthesis. The data are available through the World Wide Web at: http://wwwmedlib.med.utah/RNAmods/RNAmods.html
James A. McCloskey, Pamela F. Crain