ID 1.5.8.4 DE dimethylglycine dehydrogenase. AN Me2GlyDH. CA (6S)-5,6,7,8-tetrahydrofolyl-(gamma-L-Glu)(n) + H(+) + CA N,N-dimethylglycine + oxidized [electron-transfer flavoprotein] = (6R)- CA 5,10-methylenetetrahydrofolyl-(gamma-L-Glu)(n) + reduced [electron- CA transfer flavoprotein] + sarcosine. CC -!- An imine intermediate is channeled from the FAD binding site to the CC 5,6,7,8-tetrahydrofolate binding site through a 40 A tunnel. CC -!- In the absence of 5,6,7,8-tetrahydrofolate the enzyme forms CC formaldehyde. CC -!- Formerly EC 1.5.99.2. DR Q9UI17, M2GD_HUMAN ; Q9DBT9, M2GD_MOUSE ; Q63342, M2GD_RAT ; //