ID 2.1.1.269 DE dimethylsulfoniopropionate demethylase. AN dimethylsulfoniopropionate-dependent demethylase A. CA (6S)-5,6,7,8-tetrahydrofolate + S,S-dimethyl-beta-propiothetin = (6S)-5- CA methyl-5,6,7,8-tetrahydrofolate + 3-(methylsulfanyl)propanoate + H(+). CC -!- The enzyme from the marine bacteria Pelagibacter ubique and Ruegeria CC pomeroyi are specific toward S,S-dimethyl-beta-propiothetin. CC -!- They do not demethylate glycine-betaine. DR Q4FP21, DMDA_PELUB ; Q5LS57, DMDA_RUEPO ; //