##gff-version 3 Q7UG70 UniProtKB Chain 1 253 . . . ID=PRO_0000142045;Note=1-(5-phosphoribosyl)-5-[(5-phosphoribosylamino)methylideneamino] imidazole-4-carboxamide isomerase Q7UG70 UniProtKB Active site 19 19 . . . Note=Proton acceptor;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_01014 Q7UG70 UniProtKB Active site 141 141 . . . Note=Proton donor;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_01014