2.1.1.269 tetrahydrofolate - 701221, 756542 2.1.1.269 tetrahydrofolate (DMSP) demethylase is a tetrahydrofolate-dependent enzyme 757585 2.1.1.269 tetrahydrofolate binding site structure, overview 720998 2.1.1.269 tetrahydrofolate methyl acceptor in the anaerobic demethylation of dimethylsulfoniopropionate to methylthiopropionate 721447