>sp|Q8TYD6|HIS4_METKA 1-(5-phosphoribosyl)-5-[(5-phosphoribosylamino)methylideneamino] imidazole-4-carboxamide isomerase OS=Methanopyrus kandleri GN=hisA MAFVVIPSVDVVEGKCVQLVEGDPERRTFESDDPVETAHQWSEFFPWIHVVDVDAARGEG DNSDIIGRICEEVDAKVQVGGGIRSAERAEELIELGADRLIVGTVAFTDKDDFSKIVDVC HDHGIEVFVALDVNENHEVLVSGWKEDAGVTLEDAIERFNEVADGYLTTAVHVEGKEMGI DEKVVEKSTGATDLPVLYAGGIASIKDVKRAKEAGAYGVVIGTALYHGDIDPVALLDLME ED