MODOMICS is a database of RNA modifications that provides comprehensive information concerning the chemical structures of modified ribonucleosides, their biosynthetic pathways, the location of modified residues in RNA sequences, and RNA modifying enzymes.

Dear Users of Modomics, thank you very much for the numerous emails of concern you sent during the last two weeks. Our servers experienced a minor downtime that caused some of our services to don't work correctly anymore. We took this as an occasion to switch our database to its next release. We hope you will find the new graphic more modern and usable. Let us know what you think. Pietro B.