##gff-version 3 Q8XV84 UniProtKB Chain 1 247 . . . ID=PRO_0000142041;Note=1-(5-phosphoribosyl)-5-[(5-phosphoribosylamino)methylideneamino] imidazole-4-carboxamide isomerase Q8XV84 UniProtKB Active site 8 8 . . . Note=Proton acceptor;Ontology_term=ECO:0000250;evidence=ECO:0000250 Q8XV84 UniProtKB Active site 131 131 . . . Note=Proton donor;Ontology_term=ECO:0000250;evidence=ECO:0000250