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. 1975 Apr;15(4):335–372. doi: 10.1016/S0006-3495(75)85823-1

Some self-consistent two-state sliding filament models of muscle contraction.

T L Hill, E Eisenberg, Y D Chen, R J Podolsky
PMCID: PMC1334694  PMID: 1125390

Abstract

The general formalism required to treat two-state sliding filament models of muscle contraction, including free energy considerations, is first reviewed and amplified. This formalism is then used to examine, and modify as needed, three models studied previously by Podolsky and Nolan, in which cross-bridge attachment-detachment and ATP turnover are not tightly coupled. No attempt is made here to establish an optimal, self-consistent model of this type because our interest is primarily in methadology rather than in fitting experimental results. But it appears from this preliminary study that such a model, with satisfactory mechanical and thermodynamic properties, could be found. An extremely simple but unrealistic two-state model is also studied which is of interest because it demonstrates the fact that it is possible, in principle at least, for sliding filament models to work with very high thermodynamic efficiencies (50-100 percent). An appendix is included that is concerned with the form of the dependence of certain first-order rate constants on the concentrations of ATP, ADP, and P.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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