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.

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.

As for dbSNP build 137, there are three tracks in this release. One is a track containing all mappings of reference SNPs to the mouse assembly, labeled "All SNPs (137)". The other two tracks are subsets of this track and show interesting and easily defined subsets of dbSNP:

• Common SNPs (137): uniquely mapped variants that appear in at least 1% of the population
• Mult. SNPs (137): variants that have been mapped to more than one genomic location

By default, only the Common SNPs (137) are visible; other tracks must be made visible using the track controls.

You will find the three SNPs (137) tracks on the Mouse Dec. 2011 (GRCm38/mm10) browser in the "Variation and Repeats" group.

11 February 2013 - Denisova tracks released on hg19 browser: In conjunction with the publication of the paper by Meyer et al. A High-Coverage Genome Sequence from an Archaic Denisovan Individual the UCSC Genome Browser is hosting a set of new tracks. Read more.

25 January 2013 - Southern White Rhinoceros Genome Browser Release: We are pleased to announce the release of a Genome Browser for the May 2012 assembly of the Southern White Rhinoceros, Ceratotherium simum simum (Broad Institute version cerSimSim1.0, UCSC version cerSim1). Read more.

22 January 2013 - New Baboon (papAnu2) Assembly Now Available in the Genome Browser: We are pleased to announce the release of a Genome Browser for the March 2012 assembly of the Olive Baboon, Papio anubis (Baylor Panu_2.0, UCSC version papAnu2). 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.