Regimes where the free energy supplied by the chemical to the mechanical processes is exclusively due to the information flow (RT İ), and thus lack any energy flow ( Ė), are denoted as pure Maxwell demon regimes. This analysis demonstrates that the free energy supplied to the mechanical processes by the energy and information flows, RT İ + Ė, is the origin of net directional motion of the macrocycle around the track. Indeed, in the absence of such flow (RT İ + Ė = 0) the mechanical transitions are at thermodynamic equilibrium ( Σmech = 0), meaning a zero directional shuttling current (J = 0; see equation ( )). From an information thermodynamics perspective, the molecular motor operates by using chemical processes to transduce the free energy supplied by the fuel into the free energy supplied to the mechanical processes. The efficiency of this transduction is the ratio of the latter to the former and is bounded between zero and one due to the nonnegativity of Σchem :