##gff-version 3 Q9K6Z5 UniProtKB Chain 1 244 . . . ID=PRO_0000141974;Note=1-(5-phosphoribosyl)-5-[(5-phosphoribosylamino)methylideneamino] imidazole-4-carboxamide isomerase Q9K6Z5 UniProtKB Active site 11 11 . . . Note=Proton acceptor;Ontology_term=ECO:0000250;evidence=ECO:0000250 Q9K6Z5 UniProtKB Active site 133 133 . . . Note=Proton donor;Ontology_term=ECO:0000250;evidence=ECO:0000250