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Biological motors

Connecting stalks in V-type ATPase

Abstract

In all organisms, adenosine triphosphate (ATP) provides metabolic energy for driving energy-dependent processes. It is synthesized and/or utilized by enzymes known as F-type and V-type ATPases, which are small rotary motors1,2. Both types consist of a headpiece, F1 or V1, respectively, which is connected by a stalk region to the membrane-bound part, FO or VO. Electron microscopic analysis of negatively stained particles has revealed a peripheral stalk, or stator, between V1 and VO of the V-type (Na+)ATPase of the thermophilic bacterium Clostridium fervidus3,4, like that in F-type ATPases5,6. We have analysed many more particles and now present a more complete structure of the V-type ATPase stator moiety.

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Figure 1: Electron microscopy images of V1V0 in side view.

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Correspondence to E.J. Boekema.

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Boekema, E., van Breemen, J., Brisson, A. et al. Connecting stalks in V-type ATPase. Nature 401, 37–38 (1999). https://doi.org/10.1038/43369

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