Effects of different modifications on the prebranch model. The axes of the tables specify the reaction which is modified, the modification type and the effective concentration of the modifier ( or ). Descriptions have been abbreviated in order to reduce the table size; r3in0.1 means that reaction_3 is noncompetitively inhibited with an effective inhibitor concentration of 0.1. Other possible types of modification are competitive inhibition (c), cofactor competitive inhibition (k), uncompetitve inhibition (u), or nonessential activation (a). Values on the diagonal describe the absolute change in the steady state concentration of species_7 when only one reaction is modified while values apart from the diagonal describe the change resulting from modifying two reactions at once. Near diagonal entries are blank because one single reaction is not modified twice.