standards > terminology artifact > DOI:10.25504/FAIRsharing.wp0134
FAIRsharing is now available for record creation, update, and search at, please visit us there! Replacement of this read-only version of the legacy site with the new version of FAIRsharing is planned for the week commencing 31 January 2022.

ready Clusters of Orthologous Groups (COG) Analysis Ontology

Abbreviation: CAO

General Information
CAO ontology is designed for supporting the COG enrichment study by using Fisher's exact test. It is used for the ontology based application for statistical analysis on COG db.

How to cite this record CAO; Clusters of Orthologous Groups (COG) Analysis Ontology; DOI:; Last edited: Aug. 8, 2019, 10:56 a.m.; Last accessed: Jan 25 2022 10:48 a.m.

Record updated: June 28, 2019, 2:56 p.m. by The FAIRsharing Team.

Show edit history



Additional Information

External Links


    No tools defined


No XSD schemas defined

Access / Retrieve Data

Conditions of Use


A genomic perspective on protein families.

Tatusov RL,Koonin EV,Lipman DJ
Science 1997

View Paper (PubMed)

CAO Ontology Display

View in BioPortal.

Disclaimer: This widget assumes the availability of the ontology resources in the NCBO BioPortal.

Related Standards

Reporting Guidelines

No guidelines defined

Terminology Artifacts

No semantic standards defined

Models and Formats

No syntax standards defined

Identifier Schemas

No identifier schema standards defined


No metrics standards defined

Related Databases (1)
Clusters of Orthologous Groups of Proteins: Phylogenetic classification of proteins encoded in complete genomes
Clusters of Orthologous Groups of proteins (COGs) were delineated by comparing protein sequences encoded in complete genomes, representing major phylogenetic lineages. Each COG consists of individual proteins or groups of paralogs from at least 3 lineages and thus corresponds to an ancient conserved domain.

Implementing Policies

This record is not implemented by any policy.


Record Maintainer

  • This record is in need of a maintainer. If you login, you'll be able to claim this record.