Figure 5

Matrix formalism of the TRN model. (A) The regulatory state matrix {\mathbf{R}}^{*} of the toy model in which the regulatory rules are: \text{A}+\text{B}\to \text{Protein }1; \text{C}\to \text{Protein }2; \text{D}\to \text{Protein }2. The environmental state of {\mathbf{R}}^{*} is that metabolites A and D are present while B and C are absent. (B) The corresponding {\mathbf{\text{R}}}_{\text{new}}^{*} of {\mathbf{R}}^{*}.