Cat assembly and gene annotation


The Felis_catus_8.0 assembly was submitted by the International Cat Genome Sequencing Consortium on 2014/11/7. The assembly is chromosome level, with a total of 19 chromosomes. There are 267,927 scaffolds and 367,671 contigs. 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 45,189 while the scaffold N50 is 18,072,971.

The genome assembly represented here corresponds to GenBank Assembly ID GCA_000181335.2

Other assemblies

Gene annotation

The gene annotation process was carried out using a combination of protein-to-genome alignments 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.

More information

General information about this species can be found in Wikipedia.



AssemblyFelis_catus_6.2, INSDC Assembly GCA_000181335.2, Sep 2011
Base Pairs2,365,745,914
Golden Path Length2,455,541,136
Annotation methodMixed strategy build
Genebuild startedDec 2011
Genebuild releasedJan 2013
Genebuild last updated/patchedJan 2013
Database version92.62

Gene counts

Coding genes19,493
Gene transcripts22,656


Genscan gene predictions45,433
Short Variants324,963

About this species