##gff-version 3 Q970Z2 UniProtKB Chain 1 230 . . . ID=PRO_0000142104;Note=1-(5-phosphoribosyl)-5-[(5-phosphoribosylamino)methylideneamino] imidazole-4-carboxamide isomerase Q970Z2 UniProtKB Active site 9 9 . . . Note=Proton acceptor;Ontology_term=ECO:0000250;evidence=ECO:0000250 Q970Z2 UniProtKB Active site 129 129 . . . Note=Proton donor;Ontology_term=ECO:0000250;evidence=ECO:0000250