2.2 SQUARE inside PROTEIN p0 inside PROTEIN p1 inside SIMPLE_MOLECULE _space_S_space__minus_Malate inside SIMPLE_MOLECULE Formate inside SIMPLE_MOLECULE Oxaloacetate inside SIMPLE_MOLECULE CO2 inside SIMPLE_MOLECULE H_plus_ STATE_TRANSITION Formate CO2 c1 c3 c4 STATE_TRANSITION _space_S_space__minus_Malate Oxaloacetate c0 c2