Protein-based machines input/output energy

For Protein-based Machines Input Energy Constitutes the Action and Output Energy Constitutes the Reaction... 

Another example is the Principle of Le ChStelier, which may be stated as follows For any system at rest (at equilibrium) the introduction of a stress (in our case an input energy) causes the system to react in such a way as to relieve the stress (in our case by an output energy). This principle reasonably describes protein-catalyzed energy conversion, that is, the function of protein-based machines. Under prescribed conditions, properly designed model protein-based machines exhibit a behavior where for each action there is a reaction. In section 5.4, regardless of the action, which was any one of several different input energies, the performance of mechanical work was the reac-... 

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