Annotation Extension

Purpose of annotation extensions

Annotation Extensions allows GO terms in standard annotations to be further specified, using gene products, chemicals, cell types, anatomical structures. The ontology terms used to extend annotations are GO term or external ontologies. Annotation extensions allows to build a more complete model of biological systems.

Relations valid for annotation extensions

Relations used for GO annotation extensions are from the Relation Ontology

• has_input
• has_output

Other pages to review

• http://wiki.geneontology.org/index.php/Annotation_Extension (this page)
• http://wiki.geneontology.org/index.php/Annotation_Relations
• http://wiki.geneontology.org/index.php/Guidance_for_updating_deprecated_Annotation_Extension_Relations
• https://github.com/geneontology/annotation_extensions (NOTE that P2GO links to this doc - 2021-09-29 is this still the case??) archived
• Ruth's slides
• Spreadsheets 'P2GO - GP2Term relations' and 'P2GO - Extensions' https://docs.google.com/spreadsheets/d/1vkBVTyUg1tjipUtYGan5Ob0vE14H_j6O-PuTH9619eg/edit#gid=1318491961