Advanced notice of Ensembl Tools maintenance
Please note that due to planned maintenance, Ensembl Tools will be unavailable from Tuesday, September 9, at 08:30 AM BST until Wednesday, September 10, at 08:30 AM BST.
Jobs submitted during the maintenance window will be queued and processed once maintenance is complete. We apologise for the inconvenience.

DAS

The Distributed Annotation System (DAS)

DAS is a specification of a protocol for requesting and returning annotation data for genomic regions. DAS allows sequence annotation to be stored in a decentralised manner, by multiple third-party annotators, and integrated on an as-needed basis by client-side software.

As of release 84, Ensembl no longer supports the DAS protocol. If you wish to make your data publicly accessible, we recommend creating a track hub, which provides a similar service to DAS but requires only a standard web server (or ftp site) and a few simple configuration files.

Information on how to create a track hub can be found at the UCSC Genome Browser website. The track hub format was created by the browser team at UCSC.