>sp|Q2NHB3|HIS4_METST 1-(5-phosphoribosyl)-5-[(5-phosphoribosylamino)methylideneamino] imidazole-4-carboxamide isomerase OS=Methanosphaera stadtmanae GN=hisA MIIIPAVDIKNGKCVQLVQGEPGTEQVVIENPAEVAKQWEQKGAKKLHIVDLDGALGSGR NLSIVKEIIEKTKSPIQLGGGIRSVSDAKKLLEIGVNTVIIGTMAIKNPEIIKELSSEYG CERICVSLDSKNNKVVTHGWKESTDKTPIEYAKLFEKMGAGSILFTNVDVEGLLNGINLE PIKELLNNVSIPIIYSGGITSVDDLKVLSDIGVDYVVIGSALYKGLITLEDALKYQK