>sp|O66976|HISX_AQUAE Histidinol dehydrogenase OS=Aquifex aeolicus GN=hisD MRIEDLRKEDWKLNERLEYLAKRGEILEEEYEKSVKEILKRVREEGDRAVIEFTKKFDGV ELTPENMEVPFEELEKAYEEIEPEVREALEFAENRIRVFHEKQLENSFFKEEEGIILGQK VVPLEKVGVYVPGGKAAYPSTVLMNVVPASVAGVEEIIMVSPKPNKYTLAAAYIAGVSRV FQVGGAQAIGALAYGTEKIPKVDKIVGPGNIYVALAKKLVFGTVDIDMIAGPSEVLVIAD ERANPTWVAADMLSQAEHDELAASILLTPSEELANKVKEEVERLLSQLERKEIAQKSLEK FGTIFLVKDLYHACEVANYIAPEHLEVMVREPMALLPELKHAGAIFLGDYTTEPLGDYVL GPNHTLPTGGSTRFFSPLGVYDFIKRSSVLYVSREGFKRVANQAEAIAKAEGLTAHALAV KVRKND