Viscoelastic dynamics of actin filaments coupled to rotary F-ATPase: angular torque profile of the enzyme.

@article{Pnke2001ViscoelasticDO,
  title={Viscoelastic dynamics of actin filaments coupled to rotary F-ATPase: angular torque profile of the enzyme.},
  author={Oliver P{\"a}nke and Dmitry A Cherepanov and Karin Gumbiowski and Siegfried Engelbrecht and Wolfgang Junge},
  journal={Biophysical journal},
  year={2001},
  volume={81 3},
  pages={1220-33}
}
ATP synthase (F(O)F(1)) operates as two rotary motor/generators coupled by a common shaft. Both portions, F(1) and F(O), are rotary steppers. Their symmetries are mismatched (C(3) versus C(10-14)). We used the curvature of fluorescent actin filaments, attached to the rotating c-ring, as a spring balance (flexural rigidity of 8. 10(-26) Nm(2)) to gauge the angular profile of the output torque at F(O) during ATP hydrolysis by F(1) (see theoretical companion article (. Biophys. J. 81:1234-1244… CONTINUE READING

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