>sp|Q8R886|HIS2_CALS4 Histidine biosynthesis bifunctional protein HisIE OS=Caldanaerobacter subterraneus subsp. tengcongensis GN=hisI MIDIKELKFDEKGLIPAIVQDYYTKQVLMLAYMNEESLKLTLEKGETYFFSRSRGKIWHK GETSGNTQKVKKIFYDCDEDALLIQVEAKGPACHTGNISCFYRSFDEETEDGIEILNKLY ERIKGRKINPVEGSYTNYLFEKGIDKILKKVGEEATEVVIASKNDSKDEIVYEVSDLIYH LMVLLVEKNITLNDIYNELERRYKK