label: trimethylsulfonium-tetrahydrofolate N-methyltransferase activity
label_lc: trimethylsulfonium-tetrahydrofolate n-methyltransferase activity
description: "Catalysis of the reaction: (6S)-5,6,7,8-tetrahydrofolate + trimethylsulfonium = (6S)-5-methyl-5,6,7,8-tetrahydrofolate + dimethyl sulfide + H+."