Abstract
F-type and V-type ATPases couple synthesis or hydrolysis of ATP to the translocation of H+ or Na+ across biological membranes and have similarities in structure and mechanism. In both types of enzymes three main parts can be distinguished: headpiece, membrane-bound piece and stalk region. We report on structural details of the membrane sector and stalk region, including the stator, of V-type ATPase from Clostridium fervidus, as determined by electron microscopy. Besides visualization of the stator structure, one of the main findings is that in certain projections the central stalk connecting V1 and V0 makes an angle of about 70° with the membrane. Implications for the subunit arrangement in V-type and F-type ATPase are discussed.
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Boekema, E., Ubbink-Kok, T., Lolkema, J. et al. Structure of V-type ATPase from Clostridium fervidus by electron microscopy. Photosynthesis Research 57, 267–273 (1998). https://doi.org/10.1023/A:1006044931980
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DOI: https://doi.org/10.1023/A:1006044931980