>sp|Q18DL2|HIS4_HALWD 1-(5-phosphoribosyl)-5-[(5-phosphoribosylamino)methylideneamino] imidazole-4-carboxamide isomerase OS=Haloquadratum walsbyi GN=hisA MSTLFESFEVIPAVDMQDGDVVQLVQGERGTETRYGDPVVAAKQWVEAGAKTLHLVDLDG AFEGDRMNATAVDAIIDAVDIPVQLGGGIRTANDAASLLDRGVNRVILGTAAVENPDLVA ELAESYPGRIIVSLDAADGEVVVSGWTESTGIDPAVAAARFADYGACGILFTDVDVEGKL AGIQSSVTARVIDAVDIPVIASGGVASLDDIQTLHTTGAAATVVGTALYENKFTLADAME VCESD