2.2 SQUARE inside PROTEIN p0 inside PROTEIN p1 inside SIMPLE_MOLECULE _space_5_space_10_minus_Methenyltetrahydrofolate inside SIMPLE_MOLECULE Tetrahydrofolate inside SIMPLE_MOLECULE Dihydrofolate inside SIMPLE_MOLECULE _space_5_space_10_minus_Methylenetetrahydrofolate inside SIMPLE_MOLECULE _space_10_minus_Formyltetrahydrofolate STATE_TRANSITION _space_10_minus_Formyltetrahydrofolate Tetrahydrofolate c4 c1 STATE_TRANSITION _space_5_space_10_minus_Methenyltetrahydrofolate Tetrahydrofolate c0 c1 STATE_TRANSITION _space_5_space_10_minus_Methylenetetrahydrofolate Dihydrofolate c3 c2