Sheep (ARS-UI_Ramb_v2.0)

Sheep assembly and gene annotation

Assembly

The ARS-UI_Ramb_v2.0 assembly was submitted by University of Idaho on February 2021. The assembly is on chromosome level, consisting of 226 contigs assembled into 142 scaffolds. From these sequences, 27 chromosomes have been built. The N50 size is the length such that 50% of the assembled genome lies in blocks of the N50 size or longer. The N50 length for the contigs is 43,178,051 while the scaffold N50 is 101,274,418.

Other assemblies

Gene annotation

The gene annotation process was carried out using a combination of protein-to-genome alignments, annotation mapping from a suitable reference species and RNA-seq alignments (where RNA-seq data with appropriate meta data were publicly available). For each candidate gene region, a selection process was applied to choose the most appropriate set of transcripts based on evolutionary distance, experimental evidence for the source data and quality of the alignments.
Small ncRNAs were obtained using a combination of BLAST and Infernal/RNAfold.
Pseudogenes were calculated by looking at genes with a large percentage of non-biological introns (introns of <10bp), where the gene was covered in repeats, or where the gene was single exon and evidence of a functional multi-exon paralog was found elsewhere in the genome.
lincRNAs were generated via RNA-seq data where no evidence of protein homology or protein domains could be found in the transcript.

In accordance with the Fort Lauderdale Agreement, please check the publication status of the genome/assembly before publishing any genome-wide analyses using these data.

More information

General information about this species can be found in Wikipedia.

Statistics

Summary

AssemblyARS-UI_Ramb_v2.0, INSDC Assembly GCA_016772045.1, Feb 2021
Base Pairs2,628,146,905
Golden Path Length2,628,146,905
Annotation providerEnsembl
Annotation methodFull genebuild
Genebuild startedAug 2022
Genebuild released
Genebuild last updated/patched
Database version111.2

Gene counts

Coding genes22,023
Non coding genes8,403
Small non coding genes2,409
Long non coding genes5,975
Misc non coding genes19
Pseudogenes296
Gene transcripts67,498

Other

Short Variants55,621,945
Structural variants2