title: Free energy levels and entropy production in muscle contraction and in related solution systems.
abstract: "Basic" and "gross" free energy levels of a macromolecule such as myosin or Na,K-ATPase, defined in a previous publication, are discussed here for two relatively complicated cases: a six-state kinetic diagram of the sort that could be used to describe the actin activation of myosin-ATPase in solution; and muscle contraction, where a similar kinetic diagram is needed for each value of a positional variable X.
mesh_terms: D000199:Actins / Q000378:metabolism; D000251:Adenosine Triphosphatases / Q000378:metabolism; D007700:Kinetics; D008954:Models, Biological; D009119:Muscle Contraction; D009218:Myosins / Q000378:metabolism; D012996:Solutions; D013816:Thermodynamics
chemical_list: D000199:Actins; D012996:Solutions; D000251:Adenosine Triphosphatases; D009218:Myosins