>sp|Q50757|HIS4_METTL 1-(5-phosphoribosyl)-5-[(5-phosphoribosylamino)methylideneamino] imidazole-4-carboxamide isomerase OS=Methanothermococcus thermolithotrophicus GN=hisA MIVIPAVDMKNGKCVQLIQGDPNKKHVELENPVEVAEKWVSEGAEMLHLVDLDGAIEGES VNRELIKEIIQTVNVPVQIGGGISVRCTESNLIEIGAKRIILGTVAVENPDIVEEISKKV GKEKVMVALDAKDGKVVIKGWKEKTKYTPVEMGKILEEKGAGSILFTNVNVEGLLTGMNV EPVETLVEELEIPVIASGGVTTIEDLIKLKAVGVEGVVVGSAIYKNLIDLKEAIKACR