label: (6R)-5,10-methylenetetrahydrofolyl-(gamma-L-Glu)(n) + sarcosine + reduced [electron-transfer flavoprotein] => (6S)-5,6,7,8-tetrahydrofolyl-(gamma-L-Glu)(n) + N,N-dimethylglycine + oxidized [electron-transfer flavoprotein] + H(+)
label_lc: (6r)-5,10-methylenetetrahydrofolyl-(gamma-l-glu)(n) + sarcosine + reduced [electron-transfer flavoprotein] => (6s)-5,6,7,8-tetrahydrofolyl-(gamma-l-glu)(n) + n,n-dimethylglycine + oxidized [electron-transfer flavoprotein] + h(+)