>sp|Q8PZ49|HACB_METMA Methanogen homoaconitase small subunit OS=Methanosarcina mazei GN=hacB MMENPIKGRVWKFGNDIDTDVIIPGKYLRTKDMQVFAAHAMEGIDPGFSKKAKPGDIIVA GDNFGCGSSREQAPLALKHAGIACIVAKSFARIFFRNAINIGLPLMEADIECEEGDQIEV DLLKGEVKVSGKGVFRGNKLPDFLLDMLTDGGLVAHRKKVRDQEKEESA