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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 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.


  NewsFollow GenomeBrowser on Twitter

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

16 June 2011 - Re-engineered OMIM Tracks Released

We announce today the release of our newly re-engineered OMIM (Online Mendelian Inheritance in Man) tracks for both hg18 and hg19. With the kind assistance of Ada Hamosh (director), Joanna Amberger and Francois Schiettecatte of the OMIM project, we have divided the OMIM records into three separate tracks:

OMIM Allelic Variant SNPs
        Variants in the OMIM database that have associated dbSNP identifiers.

OMIM Genes
        The genomic positions of gene entries in the OMIM database. The coloring indicates the associated OMIM phenotype class.

OMIM Phenotypes - Gene Unknown
        Regions known to be associated with a phenotype, but for which no specific gene is known to be causative. This track also includes known multi-gene syndromes.

The OMIM tracks are searchable by OMIM number. In most cases, simply typing the 6-digit MIM number into the position/search box on the Browser will take you to the record.

The OMIM data are the property of Johns Hopkins University and will not be available for download from UCSC. Please contact the OMIM project at omim.org for download information.

UCSC thanks engineers Fan Hsu, Brooke Rhead and Robert Kuhn for this release.


9 June 2011 - UCSC Preview Browser Available

Early access to ENCODE and other UCSC browser data tracks under construction is now available from the new UCSC Preview Browser site: http://genome-preview.ucsc.edu. Read more.

7 June 2011 - Updated Lizard Browser Available: We have released a Genome Browser for the May 2010 genome assembly of the green anole lizard, Anolis carolinensis (Broad version AnoCar2.0, UCSC version anoCar2). Read more.

26 May 2011 - New Release of UCSC Genes for Mouse: We've released an updated set of UCSC Genes for the mm9 (NCBI Build 37) mouse Genome Browser. Read more.

==> News Archives

  Conditions of Use

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.