Enzyme Reaction Ontology for annotating Partial Information of chemical transformation	International Classification of Diseases, Version 9 - Clinical Modification	Source
http://purl.bioontology.org/ontology/STY/T126	http://www.kegg.jp/entry/enzyme	LOOM
http://purl.bioontology.org/ontology/STY/T044	http://reactionontology.org/piero/molecular_function	LOOM