UCSC Genome Bioinformatics
Genome Browser
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  About the UCSC Genome Bioinformatics Site

Welcome to the UCSC Genome Browser website. This site contains the reference sequence and working draft assemblies for a large collection of genomes. It also provides portals to ENCODE data at UCSC (2003 to 2012) and to the Neandertal project. You may download or purchase the Genome Browser source code, or the Genome Browser in a Box (GBiB) at our online store.

We encourage you to explore these sequences with our tools. The Genome Browser zooms and scrolls over chromosomes, showing the work of annotators worldwide. The Gene Sorter shows expression, homology and other information on groups of genes that can be related in many ways. Blat quickly maps your sequence to the genome. The Table Browser provides convenient access to the underlying database. VisiGene lets you browse through a large collection of in situ mouse and frog images to examine expression patterns. Genome Graphs allows you to upload and display genome-wide data sets.

The UCSC Genome Browser is developed and maintained by the Genome Bioinformatics Group, a cross-departmental team within the UC Santa Cruz Genomics Institute at the University of California Santa Cruz (UCSC). If you have feedback or questions concerning the tools or data on this website, feel free to contact us on our public mailing list. The Genome Browser is for research use only. Not intended for clinical use.

The Genome Browser project team relies on public funding to support our work. Donations are welcome -- we have many more ideas than our funding supports! If you have ideas, drop a comment in our suggestion box. Give to the UCSC Genome Browser

  NewsFollow @GenomeBrowser on Twitter Genome Browser Facebook page

To receive announcements of new genome assembly releases, new software features, updates and training seminars by email, subscribe to the genome-announce mailing list. Please see our blog for posts about Genome Browser tools, features, projects and more.


27 June 2016 - New Way to Share Sessions - Public Sessions!

We are excited to announce the release of the Public Sessions page, the newest way to share your UCSC Genome Browser snapshots with your colleagues and the world. The Public Sessions page collects sessions that users have elected to share publicly. Sessions on this page can be filtered based on assembly, name, or a phrase from the description. Sessions can also be sorted based on their popularity or creation date. To add your own sessions to this Public Sessions page, just check the box under "post in public listing" on the session management page.

The Genome Browser session management page has also received an update with the release of the new Public Sessions page. Sessions are now arranged in a table, where varying numbers of sessions can be displayed on a page of this table. Sessions can now be filtered and ordered based on session name, primary assembly, and creation date. Clicking on the session name now displays that session in the Genome Browser. Session details, such as the name or the description, can be changed using the "details" button in the new table layout.

The release of the new Public Sessions page also marks a change in our session expiration policy. We no longer expire sessions and associated custom tracks four months after their last use. Please note, however, that the UCSC Genome Browser is not a data storage service and that we encourage you to keep local copies of your session contents and custom track data.

For more information about using sessions to share snapshots of the UCSC Genome Browser, please see the User Guide or our blog post, "How to share your UCSC screenthoughts."

Thanks to Jonathan Casper and Matthew Speir for their work on this new tool.


15 June 2016 - New Official Asian Mirror Released

We are pleased to announce the introduction of a new supported Genome Browser mirror to serve our users in Asia. The genome-asia server (http://genome-asia.ucsc.edu), which is administered by UCSC, is physically located at the RIKEN Yokohama Campus in Japan.

Genome-asia is intended as an alternate, faster access point for those Browser users who are geographically closer to Asia than to the western United States. The mirror is functionally identical to the U.S.-based server, with one exception. Custom tracks residing on the U.S. server are not automatically accessible from the genome-asia mirror; therefore, the use of these custom tracks and saved sessions containing them will require some manual intervention.

Genome Browser users located in Asia will be automatically redirected to genome-asia when they click the "Genomes" menu item on the Genome Browser home page, but will have the option to remain on the U.S.-based server. In addition to the genome-asia mirror, we continue to support a Europe-based Genome Browser mirror (http://genome-euro.ucsc.edu) in Bielefeld, Germany. A third-party mirror in Aarhus, Denmark, is available as an emergency backup in the rare event that our three supported sites are offline.

We wish to express our special thanks to Dr. Hideya Kawaji at the RIKEN Advanced Center for Computing and Communication for making this possible. We would also like to acknowledge the following members of the UCSC Genome Browser team for their efforts: Galt Barber, Robert Kuhn, Jorge Garcia, and Luvina Guruvadoo.


6 June 2016 - New video: Exon-only mode We are proud to announce a new video demonstrating the exon-only feature. This feature is useful in gene-expresson studies and for those doing whole-exome sequencing. Read more.

1 June 2016 - New Density Graph Feature! The Genome Browser is proud to announce a new "density graph" feature for a variety of tracks, including BAM custom tracks, that converts data into a summary display. Read more.


  Conditions of Use

The Genome Browser software, sequence and annotation data are freely available for use with these conditions. A license is required for commercial use of the software. For assistance with questions or problems regarding the UCSC Genome Browser software, database, genome assemblies, or release cycles, click here.

Program-driven use of this software is limited to a maximum of one hit every 15 seconds and no more than 5,000 hits per day.

The UCSC Genome Browser was created by the Genome Bioinformatics Group of UC Santa Cruz. Software Copyright (c) The Regents of the University of California. All rights reserved.