Abstract：
:Molecular machines carry out their function by equilibrium mechanical motions in environments that are far from thermodynamic equilibrium. The mechanically equilibrated character of the trajectories of the macromolecule has allowed development of a powerful theoretical description, reminiscent of Onsager's trajectory thermodynamics, that is based on the principle of microscopic reversibility. Unlike the situation at thermodynamic equilibrium, kinetic parameters play a dominant role in determining steady-state concentrations away from thermodynamic equilibrium, and kinetic asymmetry provides a mechanism by which chemical free-energy released by catalysis can drive directed motion, molecular adaptation, and self-assembly. Several examples drawn from the recent literature, including a catenane-based chemically driven molecular rotor and a synthetic molecular assembler or pump, are discussed.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Astumian RDdoi
10.1038/s41467-019-11402-7subject
Has Abstractpub_date
2019-08-23 00:00:00pages
3837issue
1issn
2041-1723pii
10.1038/s41467-019-11402-7journal_volume
10pub_type
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