OntoRepliCov Natural Products Ontology Source
http://www.semanticweb.org/wissame.laddada/ontologies/2020/9/SARS_CoV_2#Structural_protein http://www.owl-ontologies.com/NPOntology.owl#StructuralProtein LOOM
http://www.semanticweb.org/wissame.laddada/ontologies/2020/9/SARS_CoV_2#Amino_acid http://purl.bioontology.org/ontology/CHEBI#amino_acid LOOM