PRotein Ontology (PRO)
An ontological representation of protein-related entities
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.
The PRotein Ontology is licensed under CC BY 4.0. Please see http://obofoundry.org/ontology/pr for details.
Use reasoner in Protege to see the correct hierarchy.