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Review
. 2019 Apr;36(4):201-210.
doi: 10.1002/yea.3365. Epub 2018 Dec 10.

The plasma membrane H+ -ATPase, a simple polypeptide with a long history

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Free PMC article
Review

The plasma membrane H+ -ATPase, a simple polypeptide with a long history

Michael Palmgren et al. Yeast. 2019 Apr.
Free PMC article

Abstract

The plasma membrane H+ -ATPase of fungi and plants is a single polypeptide of fewer than 1,000 residues that extrudes protons from the cell against a large electric and concentration gradient. The minimalist structure of this nanomachine is in stark contrast to that of the large multi-subunit FO F1 ATPase of mitochondria, which is also a proton pump, but under physiological conditions runs in the reverse direction to act as an ATP synthase. The plasma membrane H+ -ATPase is a P-type ATPase, defined by having an obligatory phosphorylated reaction cycle intermediate, like cation pumps of animal membranes, and thus, this pump has a completely different mechanism to that of FO F1 ATPases, which operates by rotary catalysis. The work that led to these insights in plasma membrane H+ -ATPases of fungi and plants has a long history, which is briefly summarized in this review.

Keywords: Arabidopsis thaliana; F-type ATPase; Neurospora crassa; Nicotiana tabacum; P-type ATPase; Saccharomyces cerevisiae; Schizosaccharomyces pombe; proton pump.

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