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. 1980 Feb;29(2):195–227. doi: 10.1016/S0006-3495(80)85126-5

Cross-bridge model of muscle contraction. Quantitative analysis.

E Eisenberg, T L Hill, Y Chen
PMCID: PMC1328691  PMID: 6455168

Abstract

We recently presented, in a qualitative manner, a cross-bridge model of muscle contraction which was based on a biochemical kinetic cycle for the actomyosin ATPase activity. This cross-bridge model consisted of two cross-bridge states detached from actin and two cross-bridge states attached to actin. In the present paper, we attempt to fit this model quantitatively to both biochemical and physiological data. We find that the resulting complete cross-bridge model is able to account reasonably well for both the isometric transient data observed when a muscle is subjected to a sudden change in length and for the relationship between the velocity of muscle contraction in vivo and the actomyosin ATPase activity in vitro. This model also illustrates the interrelationship between biochemical and physiological data necessary for the development of a complete cross-bridge model of muscle contraction.

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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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