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 the ENCODE and Neandertal projects.

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 Center for Biomolecular Science and Engineering (CBSE) 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.

To receive announcements of new genome assembly releases, new software features, updates and training seminars by email, subscribe to the genome-announce mailing list.

22 May 2013 Gibbon Genome Browser Released

A Genome Browser is now available for the Gibbon (Nomascus leucogenys) assembly released by the Gibbon Genome Sequencing Consortium October 2012 (version Nleu_3.0, UCSC version nomLeu3). Please note the assembly construction details. For more information and statistics about this assembly, see the NCBI assembly record for Nleu_3.0.

Bulk downloads of the sequence and annotation data may be obtained from the Genome Browser FTP server or the Downloads page. Please observe the conditions for use when accessing and using these data sets. The annotation tracks for this browser were generated by UCSC and collaborators worldwide. See the Credits page for a detailed list of the organizations and individuals who contributed to this release.

09 April 2013 - The UCSC Cancer Genomics Browser Has a New Look!

The UCSC Cancer Genomics group has recently remodeled the interface of the Cancer Genomics Browser to make it easier to navigate and more intuitive to display, investigate, and analyze cancer genomics data and associated clinical information. This tool provides access to many types of information—biological pathways, collections of genes, genomic and clinical information—that can be used to sort, aggregate, and perform statistical tests on a group of samples. The Cancer Browser currently displays 473 datasets of 25 cancers from The Cancer Genome Atlas (TCGA) as well as data from the Cancer Cell Line Encyclopedia (CCLE) and Stand Up To Cancer.

You can find more information about how to use this tool in the online tutorial, user's guide and FAQ. Any questions or comments should be directed to genome-cancer@soe.ucsc.edu.

05 March 2013 - dbSNP 137 Available for mm10: We are pleased to announce the release of three tracks derived from dbSNP build 137, available on the mouse assembly (GRCm38/mm10). dbSNP build 137 is available at NCBI. The new tracks contain additional annotation data not included in previous dbSNP tracks, with corresponding coloring and filtering options in the Genome Browser. Read more.

The sequence and annotation data displayed in the Genome Browser are freely available for any use with the following conditions:

• Genome sequence data use restrictions are noted within the species sections on the Credits page.
• Some annotation tracks contributed by external collaborators contain proprietary data that have specific use restrictions. To check for restrictions associated with a particular genome assembly, review the database/README.txt file in the assembly's downloads directory.

The UCSC, Ensembl, and NCBI browser and annotation groups have established a common set of minimum requirements for public display of genome data made available after Spring 2009, described here.

The Genome Browser and Blat software are free for academic, nonprofit, and personal use. A license is required for commercial use. See the Licenses page for more information.

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.

For assistance with questions or problems regarding the UCSC Genome Browser software, database, genome assemblies, or release cycles, see the FAQ.