CHEBI Integrated Role Ontology	BRENDA Tissue and Enzyme Source Ontology	Source
http://purl.obolibrary.org/obo/BTO_0002979	http://purl.obolibrary.org/obo/GO_0046903	LOOM
http://purl.obolibrary.org/obo/BTO_0001117	http://purl.obolibrary.org/obo/MP_0006290	LOOM
http://purl.obolibrary.org/obo/BTO_0000091	http://purl.obolibrary.org/obo/MP_0005324	LOOM
http://purl.obolibrary.org/obo/BTO_0002990	http://purl.obolibrary.org/obo/MP_0003282	LOOM
http://purl.obolibrary.org/obo/BTO_0000981	http://purl.obolibrary.org/obo/MP_0002996	LOOM