>sp|Q5UZH1|HIS4_HALMA 1-(5-phosphoribosyl)-5-[(5-phosphoribosylamino)methylideneamino] imidazole-4-carboxamide isomerase OS=Haloarcula marismortui GN=hisA MYPEFEVVPAVDMQDGQVVQLVGGERGTEKTYGDPVEAAQRWVDAGARTLHLVDLDGAFE GERQNAAAIDAVLDAVGADVDVQLGGGIRTAEDAVSLLDRGLDRVILGTAAVETPEIVGE ISDEHPGSVLVSLDAKDGEVVVSGWTEGTGLDPADAAGRYADLGAGGILFTDVDVEGQLD GVRTDPVRRLVDSVDIPVIASGGVATINDVLALRSAGAAAVVVGSALYEGQFTLDAAIDA LGESSE