##gff-version 3 B2V6T1 UniProtKB Chain 1 239 . . . ID=PRO_1000190563;Note=1-(5-phosphoribosyl)-5-[(5-phosphoribosylamino)methylideneamino] imidazole-4-carboxamide isomerase B2V6T1 UniProtKB Active site 12 12 . . . Note=Proton acceptor;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_01014 B2V6T1 UniProtKB Active site 133 133 . . . Note=Proton donor;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_01014