Term IRI Term label Parent term IRI Parent term label Alternative term Definition http://purl.obolibrary.org/obo/pr#has_constituent_monomer has_constituent_monomer http://purl.obolibrary.org/obo/RO_0002180 has_component A relation that holds between a polymer and its constituent monomers. P has_constituent_monomer c if and only if P has_component multiple instances of c and each instance of c is covalently attached to another instance of c. http://purl.obolibrary.org/obo/RO_0002160 only_in_taxon U only_in_taxon T: U is a feature found in only in organisms of species of taxon T. The feature cannot be found in an organism of any species outside of (not subsumed by) that taxon. Down-propagates in U hierarchy, up-propagates in T hierarchy (species taxonomy). Implies applicable_to_taxon. http://purl.obolibrary.org/obo/pr#has_gene_template has_gene_template See document https://docs.google.com/document/d/15iVMtMyYbQSlvUDgn2XUaDzpwkB0USZI for full definition. http://purl.obolibrary.org/obo/pr#1to1_ortholog_of 1to1_ortholog_of If a and b are genes, a 1to1_ortholog_of b iff neither a nor b was duplicated after the speciation event that created them. If a and b are proteins, then a 1to1_ortholog_of b iff a has_gene_template some gene A and b has_gene_template some gene B and A 1to1_ortholog_of B. http://purl.obolibrary.org/obo/pr#lacks_part lacks_part A negation of the has_part relation. http://purl.obolibrary.org/obo/pr#non-covalently_bound_to non-covalently_bound_to A relation that holds between two distinct chemical entities that are held in close proximity to each other specifically via the force of non-covalent interactions. Such entities will, at all times of the interaction, colocalize with each other. http://purl.obolibrary.org/obo/pr#obsolete_has_modification obsolete has_modification OBSOLETE. http://purl.obolibrary.org/obo/pr#obsolete_lacks_modification obsolete lacks_modification OBSOLETE. Shortcut relation to indicate negation of the has_modification relation. http://purl.obolibrary.org/obo/RO_0000056 participates_in http://purl.obolibrary.org/obo/RO_0000086 has_quality http://purl.obolibrary.org/obo/RO_0001000 derives_from http://purl.obolibrary.org/obo/RO_0001025 located_in http://purl.obolibrary.org/obo/pr#confers_resistance_to confers_resistance_to http://purl.obolibrary.org/obo/BFO_0000051 has_part http://purl.obolibrary.org/obo/RO_0000087 has_role http://purl.obolibrary.org/obo/BFO_0000050 part_of http://purl.obolibrary.org/obo/RO_0002180 has_component http://purl.obolibrary.org/obo/RO_0002353 output_of http://purl.obolibrary.org/obo/RO_0002215 capable_of http://purl.obolibrary.org/obo/RO_0002331 involved_in http://purl.obolibrary.org/obo/RO_0002206 expressed_in