>sp|Q9HN53|HIS1_HALSA ATP phosphoribosyltransferase OS=Halobacterium salinarum GN=hisG MRIAVPNKGRLHDPTLALLDRAGIGVEDGADRQLYADTVDPALTVLYARAADIPEYVADG AADAGITGHDQLRESDVDCVEERLDLNYGSCRLVLAAPEDGDVTAPADLDGATVATEFPT ITRAYFADTTATPEIVEVTGATELTPHVEMADAIVDITSTGTTLRVNRLQVVDEVLSSSV RLFAHEDVHDDPKVQQVETALRSVLDAHGKRYVMLNAPADRLDDVKAVLPGLGGPTVLDV DEPGTVAVHAVVPERDVFEAISELKAVGASGILVTEIERLVD