Home › Words › P › porphobilinogenporphobilinogenporphobilinogen means A pyrrole involved in porphyrin metabolism, generated by aminolevulinate and the enzyme ALA dehydratase.EtymologyFrom porphobilin + -o- + -gen.nounA pyrrole involved in porphyrin metabolism, generated by aminolevulinate and the enzyme ALA dehydratase.Definitions & examples from Wiktionary (CC BY-SA 3.0).