2.2 SQUARE inside PROTEIN p0 inside PROTEIN p1 inside PROTEIN p2 inside SIMPLE_MOLECULE _space_10_minus_Formyltetrahydrofolate inside SIMPLE_MOLECULE _space_S_space__minus_Malate inside SIMPLE_MOLECULE Formate inside SIMPLE_MOLECULE Oxaloacetate inside SIMPLE_MOLECULE _space_5_space_10_minus_Methenyltetrahydrofolate inside SIMPLE_MOLECULE _space_5_space_10_minus_Methylenetetrahydrofolate STATE_TRANSITION _space_S_space__minus_Malate Oxaloacetate c1 c3 STATE_TRANSITION Formate _space_10_minus_Formyltetrahydrofolate c2 c0 STATE_TRANSITION _space_5_space_10_minus_Methenyltetrahydrofolate _space_5_space_10_minus_Methylenetetrahydrofolate c4 c5