logo PRotein Ontology (PRO)

An ontological representation of protein-related entities

OntoBee AberOWL OLS BioPortal PRO Bioregistry

The PRotein Ontology (PRO) formally defines taxon-specific and taxon-neutral protein-related entities in three major areas: proteins related by evolution; proteins produced from a given gene; and protein-containing complexes.

Licensing and use: The PRotein Ontology is licensed under CC BY 4.0. You are free to share (copy and redistribute the material in any medium or format) and adapt (remix, transform, and build upon the material) for any purpose, even commercially. You must give appropriate credit (by using the original ontology IRI for the whole ontology or original term IRIs for individual terms), provide a link to the license, and indicate if any changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.

pr.owl pro_reasoned.owl PRO after reasoning has been applied, OWL format.
pr.obo pro_reasoned.obo PRO after reasoning has been applied, OBO format.
Colorado Richly Annotated Full-Text (CRAFT) Corpus; PRO is used for entity tagging and annotation
Tagged entities (requires download)
Cell Ontology is a structured controlled vocabulary for cell types in animals; PRO is used for cell type definitions
A B cell that is CD19-positive (uses the PRO term for non-species-specific CD19 molecule, PR:000001002)