 We introduce the notion of "Catalytic force" Cf , as a back-action effect of the molecular target of catalysis on the catalytic microenvironment , adjusting the microenvironment towards a state that facilitates the catalytic act.
<meaning-changed>  We introduce the notion of "Catalytic force" Cf , as a back-action effect of the molecular target of catalysis on the catalytic microenvironment , adjusting the microenvironment towards a state that facilitates the catalytic act.
 We introduce the notion of "Catalytic force" Cf is introduced. Cf is the effect of the molecular target of catalysis on the catalytic microenvironment , adjusting the microenvironment towards a state that facilitates the catalytic act.