ontology

The Cell Cycle

The representation of the cell cycle in GO is split into two sections: the physical processes that occur and the temporal stages—prophase, anaphase and so on—used to describe sets of events. This method of representation is used to prevent true path problems when organisms differ from the "canonical" (usually S. cerevisiae) cell cycle.

Terms and Structure

The cell cycle node sits under cellular process ; GO:0007049 and is split into types of cell cycle (meiotic or mitotic) and stages (M phase, S phase, etc.), plus a regulation term.

  • cell cycle

    Ontology Documentation

    The Gene Ontology defines the universe of concepts relating to gene functions (‘GO terms’), and how these functions are related to each other (‘relations’). It is constantly revised and expanded as biological knowledge accumulates.

    The Reference Genome Annotation Project

    The GO Consortium coordinated an effort to maximize and optimize GO annotations for a large and representative set of key genomes, known as 'reference genomes'. The Reference Genome Annotation Project aimed to completely annotate twelve reference genomes, producing a resource that may effectively seed automatic annotation efforts of other genomes.

    Use and License

    Gene Ontology Consortium data and data products are licensed under the Creative Commons Attribution 4.0 Unported License. A human-readable version and explanation is available at the Creative Commons website. For information about how to properly credit data use, please review the Creative Commons FAQ or contact the GO Helpdesk.

    Download Mappings

    Mappings of External Classification Systems to GO

    The Gene Ontology is not the only attempt to build structured controlled vocabularies for genome annotation. To aid users, the GO Consortium provides mappings of its terms to those in a number of external vocabularies.