2.5 SQUARE inactive inactive inactive inactive inactive inactive inactive inside PROTEIN p0 inside PROTEIN p1 inside SIMPLE_MOLECULE Carbamoyl_space_phosphate inside SIMPLE_MOLECULE L_minus_Citrulline inside SIMPLE_MOLECULE L_minus_Ornithine inside SIMPLE_MOLECULE _space_4_minus_Aminobutanoate inside SIMPLE_MOLECULE Homocarnosine STATE_TRANSITION R01398 c0 c2 c1 e0 STATE_TRANSITION R01992 c3 c4 e1