2.5 SQUARE inactive inactive inactive inactive inactive inactive inside PROTEIN p0 inside PROTEIN p1 inside SIMPLE_MOLECULE _space_5_minus_Methyltetrahydrofolate inside SIMPLE_MOLECULE _space_5_space_10_minus_Methylenetetrahydrofolate inside SIMPLE_MOLECULE L_minus_Serine inside SIMPLE_MOLECULE Glycine STATE_TRANSITION R00945 c1 c3 c2 e1 STATE_TRANSITION R01224 c0 c1 e0