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    Equilibration and Exchange of Fluorescently Labeled Molecules in Skeletal Muscle Fibers Studied Using Confocal Microscopy

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    Author
    Kraft, T.; Messerli, M.; Rutishauser, B.; Wallimann, T.; Perriard, J.-C.; Chalovich, Joseph M.; Brenner, Bernhard
    Abstract
    Diffusion of molecules into skinned muscle fibers is often necessary when studying muscle contraction and its regulation. Usually, it is assumed that diffusion of molecules is fast also in the structured system of a muscle fiber, and that equilibration is reached within minutes or at most hours. One method to study not only equilibration, but also the time dependent distribution and the binding dynamics of fluorescently labeled molecules inside a muscle fiber is confocal laser fluorescence microscopy. Because of the principle of confocal imaging, one can obtain optical sections of a muscle fiber even under physiological conditions and with reasonable time and spatial resolution. In the present study, we used confocal microscopy to follow the equilibration of several fluorescently labeled substances in chemically skinned single muscle fibers of rabbit psoas. The investigation concerned mainly two questions: * What causes the equilibration time for molecules of the same size and type to be different from minutes to days? * Is the high affinity binding ofsome muscle-specific molecules readily reversible? Originally published Biophysical Journal, Vol. 68, No. 4 suppl, Apr 1995
    URI
    http://hdl.handle.net/10342/3318
    Subject
     Muscle fibers; Confocal microscopy; Molecule equilibrium 
    Date
    1995-04
    Citation:
    APA:
    Kraft, T., & Messerli, M., & Rutishauser, B., & Wallimann, T., & Perriard, J.-C., & Chalovich, Joseph M., & Brenner, Bernhard. (April 1995). Equilibration and Exchange of Fluorescently Labeled Molecules in Skeletal Muscle Fibers Studied Using Confocal Microscopy. Biophysical Journal, (68:4), p.371s. Retrieved from http://hdl.handle.net/10342/3318

    Display/Hide MLA, Chicago and APA citation formats.

    MLA:
    Kraft, T., and Messerli, M., and Rutishauser, B., and Wallimann, T., and Perriard, J.-C., and Chalovich, Joseph M., and Brenner, Bernhard. "Equilibration and Exchange of Fluorescently Labeled Molecules in Skeletal Muscle Fibers Studied Using Confocal Microscopy". Biophysical Journal. 68:4. (371s.), April 1995. March 03, 2021. http://hdl.handle.net/10342/3318.
    Chicago:
    Kraft, T. and Messerli, M. and Rutishauser, B. and Wallimann, T. and Perriard, J.-C. and Chalovich, Joseph M. and Brenner, Bernhard, "Equilibration and Exchange of Fluorescently Labeled Molecules in Skeletal Muscle Fibers Studied Using Confocal Microscopy," Biophysical Journal 68, no. 4 (April 1995), http://hdl.handle.net/10342/3318 (accessed March 03, 2021).
    AMA:
    Kraft, T., Messerli, M., Rutishauser, B., Wallimann, T., Perriard, J.-C., Chalovich, Joseph M., Brenner, Bernhard. Equilibration and Exchange of Fluorescently Labeled Molecules in Skeletal Muscle Fibers Studied Using Confocal Microscopy. Biophysical Journal. April 1995; 68(4) 371s. http://hdl.handle.net/10342/3318. Accessed March 03, 2021.
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    • Biochemistry and Molecular Biology
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    East Carolina University

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