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
Dependent and independent statement in annotation extensions
Protein2GO allows to make dependent (linked) and independent (separate) statements that are exported in GAF as comma and pipes, respectively. More information can be found in the Protein2GO documentation.
Other pages to review
- http://wiki.geneontology.org/index.php/Annotation_Extension (this page)
- 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