$$\sum_{i} C_{v_{i}}^{J} = 1 $$

For a given reference species concentration the sum of all concentration-control coefficients is zero:

$$\sum_{i} C_{v_{i}}^{[M]} = 0$$

where the summations are over all the steps of the system.

According to the first summation theorem, increases in some of the flux-control coefficients imply decreases in the others so that the total remains unity. As a consequence of the summation theorems, one concludes that the control coefficients are global properties and that in metabolic systems, control is a systemic property, dependent on all of the system's elements (steps).