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 41

Bos taurus News

  • RNA updates

    Ensembl RNA data has been updated as follows:

    • New ncRNAs for Zebrafish, Chimp, Medaka, Elephant, Rabbit, Armadillo and Tenrec
    • Updated miRNAs for all chordates.

General News

  • New animated tutorials
    A selection of Ensembl tutorials are now available online as Flash-animated presentations (with popup notes instead of a soundtrack).
    Read more...
  • Compara updates
    Homologies
    Gene trees have been updated to include the 2X genomes and use a multifurcating species tree, and homologues added based on gene trees.
    Read more...
  • Minor schema changes
    analysis_description
    Now has a 'displayable' flag to control whether or not it is usually displayed in the web pages
    xref
    One column has been changed and one added
    • the info_type column has addition ENUM values to give more details about xref provenance
    • A new column 'priority' supports the fetching of xrefs of the same type

    The API has of course been updated to reflect these changes

    .
    Read more...

More news...

Statistics

Assembly: Btau 2.0, Mar 2005
Genebuild: Ensembl, Dec 2005
Database version: 41.2d
Known genes: 5,790
Projected genes: 11,965
Novel genes: 5,476
Pseudogenes: 723
RNA genes: 2,023
Genscan gene predictions: 127,898
Gene exons: 215,926
Gene transcripts: 33,714
Base Pairs*: 2,642,506,507
Golden Path Length**: 3,144,226,132
Most common InterPro domains: Top 40 Top 500

* Total number of base pairs = sum of lengths of DNA table

** Reference assembly (Golden path) length = sum of non-redundant top level seq regions

 

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Ensembl release 41 - Oct 2006
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