Drug Database for Inborn Errors of Metabolism (DDIEM) Ontology Enzyme Reaction Ontology for annotating Partial Information of chemical transformation Source
http://purl.obolibrary.org/obo/BFO_0000030 http://reactionontology.org/piero/object LOOM
http://purl.obolibrary.org/obo/BFO_0000015 http://reactionontology.org/piero/process LOOM