Functional Therapeutic Chemical Classification System	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_0000491	http://purl.obolibrary.org/obo/GO_0007588	LOOM