Ensembl Cow

 

Explore the Bos taurus genome

Karyotype

Click on a chromosome for a closer view

Cow karyotype selector chromosome 1 chromosome 16 chromosome 2 chromosome 17 chromosome 3 chromosome 18 chromosome 4 chromosome 19 chromosome 5 chromosome 20 chromosome 6 chromosome 21 chromosome 7 chromosome 22 chromosome 8 chromosome 23 chromosome 9 chromosome 24 chromosome 10 chromosome 25 chromosome 11 chromosome 26 chromosome 12 chromosome 27 chromosome 13 chromosome 28 chromosome 14 chromosome 29 chromosome 15 chromosome 30

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About the Bos taurus genome

Assembly

Cow Btau_2.0 is a preliminary assembly of the cow, Bos taurus, Hereford breed, using whole genome shotgun (WGS) reads from small insert clones and BAC end sequences. The project coordination and genome sequencing and assembly is provided by the Human Genome Sequencing Center at Baylor College of Medicine.

The Btau_2.0 release was produced by assembling whole genome shotgun reads with the Atlas genome assembly system. Several WGS libraries, with inserts of 2-4 kb, and 4-6 kb, were used to produce the data. About 23 million reads were assembled, representing about 17.7 Gb of sequence and about 6.2x coverage of the (clonable) bovine genome.

The N50 size is the length such that 50% of the assembled genome lies in blocks of the N50 size or longer. The N50 size of the contigs is 18.9 kb and the N50 of the scaffolds is 434.7 kb. The total length of all contigs is 2.62 Gb. When the gaps between contigs in scaffolds are included, the total span of the assembly is 3.1 Gb.

Annotation

The improved, 6x assembly of cow has made it possible to apply a classical Ensembl gene-build to determine the gene-set

What's New in Ensembl 37

Bos taurus News

  • Projected gene names

    Gene names have been projected across orthologues in the form.
    Read more...

  • SSAHA2
    Transcript-based SSAHA2 servers are now available for all species. Go to BlastView and select SSAHA2 from the Search Tool box.
  • UniProt updates
    Support has been added for variable splice UniProt records by adding an external db with a display label of "UniprotKB/SpliceVariant" to the external_db table on all databases.
    Read more...
  • GeneSeqalignView
    This new view is based on GeneSeqView, with the added ability to align the given sequence with one or more species.
    Read more...
  • Bug fix to Transcript.pm
    Transcript.pm; is_known() was returning true if the transcript had a display_xref set, which is both incorrect and inconsistent with the is_known() method in Gene.pm. The new behaviour is to return true if the transcript's status is KNOWN.

More news...

Statistics

Assembly: Btau 2.0, Mar 2005
Genebuild: Ensembl, Dec 2005
Database version: 37.2a
Known genes: 16,813
Novel genes: 6,418
Pseudogenes: 723
RNA genes: 1,997
Genscan gene predictions: 127,898
Gene exons: 215,926
Gene transcripts: 33,714
Base Pairs: 1,741,208,718
Golden Path Length: 2,618,420,681
Most common InterPro domains: Top 40 Top 500
 

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Ensembl v37 - Feb 2006
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