>tr|C9RER6|C9RER6_METVM Transcriptional regulator, ArsR family OS=Methanocaldococcus vulcanius GN=Metvu_0201 MEKYEKAAEIFKAFGDPTRLMILKLLAENGSMCVCKIIDELKKPQPTISHHLNILKKAGI VKARKEGTWNFYYIVDDRVKEIIKLVDEL