>sp|Q8ZWZ1|SYH_PYRAE Histidine--tRNA ligase OS=Pyrobaculum aerophilum GN=hisS MSGLPDHLRRPVRGMRDWLPPQYYALRHMEEVLCKVAESFGYRRVETPVVEHFEVLAKKA GQDVINEIYYFKDKAGRDLGLRFDMTVPVARVLSYNLELPRPVRWYYFTKVFRYDEPQHG RYREFYQFGVELVGSSSPRADAEVIQLLIASLEAAGASNFYVRINDRRAVDKLLEHLGVA PYRDIIYKALDKKLKLPREDVIKIMTGGGVSKEIAEEIYNTATEITIQEAVELLYKLDKA LGASYEKIVKYLEASVPMERLKFDMSIVRGLDYYTGIVFEAFVGEYKLAVGGGGRYDDLL ELYSGVKTPALGFAIGVERLMEAVGIQNVERPLDYYIYIFDDDAYKYAAAVAKKLRTEGY SVVVELGEKGLKDAFEYALKVGARHIIIIGRKELEKGVIKVRDLEKRIEVEKPLSQFLA