Relation Ontology

About

This is the reference guide for the OBO Relation Ontology (RO).

RO is a collection of relations intended primarily for standardization across ontologies in the OBO Foundry and wider OBO library. It incorporates core upper-level relations such as part of (BFO:0000050) as well as biology-specific relationship types such as develops from (RO:0002202).

Website: https://oborel.github.io/
This documentation: https://oborel.github.io/obo-relations/
GitHub project: https://github.com/oborel/obo-relations/
OBO Page: http://obofoundry.org/ontology/ro

Browsing and Download

Browse on OLS: OLS (click properties tab)
Browse on OntoBee: OntoBee

Currently the optimal way to browse RO is to download Protege and load the owl files.

Use the following URIs to download this ontology:

http://purl.obolibrary.org/obo/ro.owl
http://purl.obolibrary.org/obo/ro.obo
http://purl.obolibrary.org/obo/ro.json

The OWL product is more expressive than the OBO format one, and includes additional axioms.

Contributing

CONTRIBUTING.md
Join the Google Group
Request new relations via the obo-relations issue tracker