2.2 SQUARE inside PROTEIN p0 inside PROTEIN p1 inside SIMPLE_MOLECULE Penicilloic_space_acid inside SIMPLE_MOLECULE Penicillin inside SIMPLE_MOLECULE _space_6_minus_Aminopenicillanate STATE_TRANSITION Penicillin Penicilloic_space_acid c1 c0 STATE_TRANSITION Penicillin _space_6_minus_Aminopenicillanate c1 c2