<?xml version="1.0" encoding="UTF-8"?> <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:obo_purl="http://purl.obolibrary.org/obo/" xmlns:owl="http://www.w3.org/2002/07/owl#" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:metadata_def="http://data.bioontology.org/metadata/def/" xmlns:metadata="http://data.bioontology.org/metadata/"> <owl:Class rdf:about="http://purl.obolibrary.org/obo/CHEBI_26932"> <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/CHEBI_38077"/> <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/CHEBI_33833"/> <metadata_def:mappingSameURI rdf:resource="http://purl.obolibrary.org/obo/CHEBI_26932"/> <metadata_def:mappingLoom>tetrapyrrole</metadata_def:mappingLoom> <metadata_def:prefLabel>tetrapyrrole</metadata_def:prefLabel> <obo_purl:IAO_0000115>A natural pigment containing four pyrrole rings joined by one-carbon units linking position 2 of one pyrrole ring to position 5 of the next.</obo_purl:IAO_0000115> <metadata:prefixIRI>CHEBI:26932</metadata:prefixIRI> <rdfs:label>tetrapyrrole</rdfs:label> <obo_purl:IAO_0000412 rdf:resource="http://purl.obolibrary.org/obo/chebi.owl"/> </owl:Class> <rdf:Description rdf:about="http://purl.obolibrary.org/obo/CHEBI_36309"> <rdfs:subClassOf> <rdf:Description rdf:about="http://purl.obolibrary.org/obo/CHEBI_26932"> <metadata_def:mappingSameURI rdf:resource="http://purl.obolibrary.org/obo/CHEBI_26932"/> </rdf:Description> </rdfs:subClassOf> </rdf:Description> </rdf:RDF>