Orthology Ontology EDAM - The data analysis and management ontology Source
http://edamontology.org/format_1208 http://purl.org/net/orth#Protein LOOM
http://edamontology.org/data_1868 http://purl.uniprot.org/core/Taxon LOOM
http://edamontology.org/data_0581 http://semanticscience.org/resource/SIO_000750 LOOM