2.2 SQUARE inside PROTEIN p0 inside PROTEIN p1 inside PROTEIN p2 inside SIMPLE_MOLECULE Succinate inside SIMPLE_MOLECULE Oxaloacetate inside SIMPLE_MOLECULE Fumarate inside SIMPLE_MOLECULE _space_S_space__minus_Malate inside SIMPLE_MOLECULE Phosphoenolpyruvate STATE_TRANSITION Oxaloacetate Phosphoenolpyruvate c1 c4 STATE_TRANSITION _space_S_space__minus_Malate Fumarate c3 c2 STATE_TRANSITION Succinate Fumarate c0 c2