##gff-version 3 P59520 UniProtKB Chain 1 241 . . . ID=PRO_0000141989;Note=1-(5-phosphoribosyl)-5-[(5-phosphoribosylamino)methylideneamino] imidazole-4-carboxamide isomerase P59520 UniProtKB Active site 7 7 . . . Note=Proton acceptor;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_01014 P59520 UniProtKB Active site 129 129 . . . Note=Proton donor;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_01014