##gff-version 3 A1SL57 UniProtKB Chain 1 244 . . . ID=PRO_0000290501;Note=1-(5-phosphoribosyl)-5-[(5-phosphoribosylamino)methylideneamino] imidazole-4-carboxamide isomerase A1SL57 UniProtKB Active site 12 12 . . . Note=Proton acceptor;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_01014 A1SL57 UniProtKB Active site 131 131 . . . Note=Proton donor;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_01014