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Electrogenic properties of the Na+,K+-ATPase probed by presteady state and relaxation studies

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Bamberg,  Ernst
Department of Biophysical Chemistry, Max Planck Institute of Biophysics, Max Planck Society;

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Fendler,  Klaus
Department of Biophysical Chemistry, Max Planck Institute of Biophysics, Max Planck Society;

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Citation

Bamberg, E., Clarke, R., & Fendler, K. (2001). Electrogenic properties of the Na+,K+-ATPase probed by presteady state and relaxation studies. Journal of Bioenergetics and Biomembranes, 33(5), 401-405. doi:10.1023/a:1010667407003.


Cite as: http://hdl.handle.net/21.11116/0000-0007-6E74-C
Abstract
Electrical measurements on planar lipid bilayers, patch/voltage clamp experiments, and spectroscopic investigations involving a potential sensitive dye are reviewed. These experiments were performed to analyze the kinetics of charge translocation of the Na+,K+-ATPase. High time resolution was achieved by applying caged ATP, voltage-jump, and stopped-flow techniques, respectively. Kinetic parameters and the electrogenicity of the relevant transitions in the Na+,K+-ATPase reaction cycle are discussed.