##gff-version 3 Q5X5X3 UniProtKB Chain 1 239 . . . ID=PRO_0000142014;Note=1-(5-phosphoribosyl)-5-[(5-phosphoribosylamino)methylideneamino] imidazole-4-carboxamide isomerase Q5X5X3 UniProtKB Active site 8 8 . . . Note=Proton acceptor;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_01014 Q5X5X3 UniProtKB Active site 129 129 . . . Note=Proton donor;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_01014