miRBase: microRNA Sequences and Annotation

miRBase is the central repository for microRNA (miRNA) sequence information. miRBase has a role in defining the nomenclature for miRNA genes and assigning names to novel miRNAs for publication in peer-reviewed journals. The online miRBase database is a resource containing all published miRNA sequences, together with textual annotation and links to the primary literature and to other secondary databases. The database provides a variety of methods to query the data, by specific searches of sequences and associated text and literature. All miRBase data are also available for download from the miRBase FTP site.