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GO Annotation File (GAF) Format 1.0

Annotation data is submitted to the GO Consortium in the form of gene association files, or GAFs. The following document lays out the format specification for GAF 1.0; for the newer GAF 2.0 file syntax, please see the GAF 2.0 file format guide.

More general information on annotation can be found in the GO annotation guide.

Downloads

  • GO annotations: Gene association files submitted by members of the Gene Ontology Consortium
  • Ontology: Various versions of Gene Ontology
  • Mappings: Mappings from the GO to a number of external vocabularies also built for genome annotation

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.