>sp|A6VHF1|MTRB_METM7 Tetrahydromethanopterin S-methyltransferase subunit B OS=Methanococcus maripaludis GN=mtrB MDIVKVCPELHIVMDVDSGLIAEMRKDILVVDLHPVEDEINKLAQYAKALENSLDPRNSP MKAYNGREGTYKLAGMFQGMFFGFWVTMAILVLVTILAVKMNLSLIGL