sp|O27907|HDRB_METTH H(2):CoB-CoM heterodisulfide,ferredoxin reductase subunit B OS=Methanothermobacter thermautotrophicus (strain ATCC 29096 / DSM 1053 / JCM 10044 / NBRC 100330 / Delta H) OX=187420 GN=hdrB PE=3 SV=1