##gff-version 3 Q9HN14 UniProtKB Chain 1 242 . . . ID=PRO_0000142090;Note=1-(5-phosphoribosyl)-5-[(5-phosphoribosylamino)methylideneamino] imidazole-4-carboxamide isomerase Q9HN14 UniProtKB Active site 13 13 . . . Note=Proton acceptor;Ontology_term=ECO:0000250;evidence=ECO:0000250 Q9HN14 UniProtKB Active site 133 133 . . . Note=Proton donor;Ontology_term=ECO:0000250;evidence=ECO:0000250