Respective roles of H-ATPase and H-K-ATPase in ion transport in the kidney.
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Role of the Plasma Membrane H+-ATPase in K+ Transport.
The role of the plant plasma membrane H+-ATPase in K+ uptake was examined using red beet (Beta vulgaris L.) plasma membrane vesicles and a partially purified preparation of the red beet plasma membrane H+-ATPase reconstituted in proteoliposomes and planar bilayers. For plasma membrane vesicles, ATP-dependent K+ efflux was only partially inhibited by 100 [mu]M vanadate or 10 [mu]M carbonyl cyani...
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Sangan, Pitchai, Sundararajah Thevananther, Sheela Sangan, Vazhaikkurichi M. Rajendran, and Henry J. Binder. Colonic H-K-ATPase aand b-subunits express ouabain-insensitive H-K-ATPase. Am. J. Physiol. Cell Physiol. 278: C182–C189, 2000.—Active K absorption in the rat distal colon is energized by an apical H-K-ATPase, a member of the gene family of P-type ATPases. The H-K-ATPase a-subunit (HKca) ...
متن کامل19-P012 H,K-ATPase-mediated ion transport regulates anterior patterning in regenerating planaria
cells along the proximodistal (PD) axis concomitantly with remodelling of the pre-existing stump, making the regenerated legs shorter than normal. In contrast, knockdown of the expanded (ex) or Merlin (Mer) transcripts induced over-proliferation of the regenerating cells, making the regenerated legs longer. These results are consistent with those obtained using rdRNAi during intercalary regener...
متن کاملThe parietal cell gastric H, K-ATPase also functions as the Na, K-ATPase and Ca-ATPase in altered states
This article offers an explanation for the apparent lack of Na, K-ATPase activity in parietal cells although ouabain has been known to inhibit gastric acid secretion since 1962. The gastric H, K-ATPase (proton-pump) seems to be acting in altered states, thus behaving like a Na, K-ATPase (Na-pump) and/or Ca-ATPase (Ca-pump) depending on cellular needs. This conclusion is based on the following ...
متن کاملBufo marinus bladder H-K-ATPase carries out electroneutral ion transport.
Bufo marinus bladder H-K-ATPase belongs to the Na-K-ATPase and H-K-ATPase subfamily of oligomeric P-type ATPases and is closely related to rat and human nongastric H-K-ATPases. It has been demonstrated that this ATPase transports K(+) into the cell in exchange for protons and sodium ions, but the stoichiometry of this cation exchange is not yet known. We studied the electrogenic properties of B...
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ژورنال
عنوان ژورنال: Journal of the American Society of Nephrology
سال: 1991
ISSN: 1046-6673,1533-3450
DOI: 10.1681/asn.v25949