>sp|Q50755|HDRB_METTM H(2):CoB-CoM heterodisulfide,ferredoxin reductase subunit B OS=Methanothermobacter marburgensis GN=hdrB MEIAYFLGCIMNNRYPGIEKATRVLFDKLGIELKDMEGASCCPAPGVFGSFDKTTWAAIA ARNITIAEDMGADIMTECNGCFGSLFETNHLLKEDEEMKAKINEILKETGREYKGEVNVR HFAEVLYNDVGLDKLSELVEKPLNLNVAVHYGCHFLKPSDEINIDNPERPTILDEIVEVT GAKSVEYKDKMMCCGAGGGVRSRDLDVALDFTREKLTNMKEAGVDAIVNVCPFCHLQFDV GQMEIKDKFGEEFDIPVLHLAQLLGLAMGLPKEDLVVDAHQVCVDECLEKLEELDRLAPG SG