label: tetrahydromethanopterin S-methyltransferase activity
label_lc: tetrahydromethanopterin s-methyltransferase activity
description: "Catalysis of the reaction: 5-methyl-5,6,7,8-tetrahydromethanopterin + coenzyme M + 2 Na+(in) = 5,6,7,8-tetrahydromethanopterin + methyl-coenzyme M + 2 Na+(out). 2-(methylthio)ethanesulfonate is also known as methyl-CoM."