>sp|Q8TIB8|HDRB2_METAC Ferredoxin/F(420)H(2)-dependent CoB-CoM heterodisulfide reductase subunit B OS=Methanosarcina acetivorans GN=hdrB2 MAKLSLFRGCIVPNRYPGIEKATKLCLQKLEVDAVDLPGASCCPAPGVFKSFDKATWLAL ASRNIVLSERMGRDILTVCNGCYGSLADANIELKNDPEMKACTNSCLKEIGMEYKGTAEV RHIIEFLYKELGPEKLKSFITTPLDLKVALHYGCHLIKPSKERNLGETEAPVFFDELVEA TGAKSVDYTDKMMCCGAGGGVRSGHAAESLEMLEHKLACIRNAGVDCIVNACPFCHLQFD RGQLAVNEKFGTDYSIPVLHYSQLLGLALGFSPDELGIEQNAIQNIEFLAKIYEISAGLR