>sp|O27236|MCRB_METTH Methyl-coenzyme M reductase I subunit beta OS=Methanothermobacter thermautotrophicus GN=mcrB MAKFEDKVDLYDDRGNLVEEQVPLEALSPLRNPAIKSIVQGIKRTVAVNLEGIENALKTA KVGGPACKIMGRELDLDIVGNAESIAAAAKEMIQVTEDDDTKVELLGGGKRALVQVPSAR FDVAAEYSAAPLVTATAFVQAIINEFDVSMYDANMVKAAVLGRYPQSVEYMGANIATMLD IPQKLEGPGYALRNIMVNHVVAATLKNTLQAAALSTILEQTAMFEMGDAVGAFERMHLLG LAYQGMNADNLVFDLVKANGKEGTVGSVIADLVERALEDGVIKVEKELTDYKVYGTDDLA MWNAYAAAGLMAATMVNQGAARAAQGVSSTLLYYNDLIEFETGLPGVDFGKVEGTAVGFS FFSHSIYGGGGPGIFNGNHIVTRHSKGFAIPCVAAAMALDAGTQMFSPEATSGLIKEVFS QVDEFREPLKYVVEAAAEIKNEI