miRBase: the home of microRNA data
miRBase (http://microrna.sanger.ac.uk/) is the new home of microRNA data on the web, providing data previously accessible from the miRNA Registry. Old miRNA Registry addresses should redirect you to this page.
- The miRBase Sequence Database is a searchable database of published miRNA sequences and annotation. The data were previously provided by the miRNA Registry.
- The miRBase Registry continues to provide gene hunters with unique names for novel miRNA genes prior to publication of results.
- The miRBase Targets database is a new resource of predicted miRNA targets in animals.
Each entry in the miRBase Sequence database represents a predicted hairpin portion of a miRNA transcript (termed mir in the database), with information on the location and sequence of the mature miRNA sequence (termed miR). Both hairpin and mature sequences are available for searching using BLAST and SSEARCH, and entries can also be retrieved by name, keyword, references and annotation. All sequence and annotation data are also available for download.
Please note that the predicted stem-loop sequences in the database are not strictly precursor miRNAs (pre-miRNAs), but include the pre-miRNA and some flanking sequence from the presumed primary transcript.
Please use the tabs along the top of this page to access the different areas of the site, or you can click here to jump to the help pages.
To receive email notification of data updates and feature changes please subscribe to the miRNA mailing list. Any other queries about the website or naming service should be directed at microrna@sanger.ac.uk.