Guinea Pig assembly and gene annotation


The Cavpor3.0 assembly was submitted by The Genome Sequencing Platform, The Genome Assembly Team on 2008/03/03 . The assembly is on the Scaffold level, consisting of 61,604 assembled into 3,144 scaffolds. 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 80,583 while the scaffold N50 is 27,942,054.

Other assemblies

Gene annotation

The domestic guinea pig (Cavia porcellus), or simply guinea pig, also known as cavy or cuy for livestock term, is a species of rodent belonging to the family Caviidae and the genus Cavia. Despite their common name, these animals are not in the pig family Suidae, nor do they come from Guinea. They originated in the Andes, and earlier studies based on biochemistry and hybridization suggest they are domestic descendants of a closely related species of cavy such as C. aperea, C. fulgida, or C. tschudii and, therefore, do not exist naturally in the wild. Recent studies applying molecular markers, in addition to studying the skull and skeletal morphology of current and mummified animals, revealed that the ancestor is most likely Cavia tschudii.

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.



AssemblycavPor3, Mar 2008
Base Pairs2,663,369,733
Golden Path Length2,723,219,641
Annotation methodFull genebuild
Genebuild startedMar 2008
Genebuild releasedSep 2008
Genebuild last updated/patchedMay 2010
Database version94.3

Gene counts

Coding genes18,673
Gene transcripts26,129


Genscan gene predictions53,615

About this species