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Related Concept Videos

ATP Driven Pumps I: An Overview01:27

ATP Driven Pumps I: An Overview

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ATP-driven pumps, also known as transport ATPases, are integral membrane proteins. They have binding sites for ATP located on the membrane's cytosolic side and the ion-conducting domain in the transmembrane region. These pumps use the free energy released from ATP hydrolysis to move the solutes across cell membranes against an electrochemical gradient.
There are four main types of ATP-driven pumps - P-type, V-type, F-type, and ABC transporter. All these pumps are of varying complexities and...
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ATP Synthase: Mechanism01:48

ATP Synthase: Mechanism

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In animals, the mitochondrial F1F0 ATP synthase is the key protein that synthesizes ATP molecules through a complex catalytic mechanism. While the nuclear genome encodes the majority of ATP synthase subunits, the mitochondrial genome encodes some of the enzyme's most critical components. The formation of this multi-subunit enzyme is a complex multi-step process regulated at the level of transcription, translation, and assembly. Defects in one or more of these steps can result in decreased...
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ATP Synthase: Structure01:18

ATP Synthase: Structure

16.2K
ATP synthase or ATPase is among the most conserved proteins found in bacteria, mammals, and plants. This enzyme can catalyze a forward reaction in response to the electrochemical gradient, producing ATP from ADP and inorganic phosphate. ATP synthase can also work in a reverse direction by hydrolyzing ATP and generating an electrochemical gradient. Different forms of ATP synthases have evolved special features to meet the specific demands of the cell. Based on their specific feature, ATP...
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ATP Driven Pumps II: P-type Pumps01:34

ATP Driven Pumps II: P-type Pumps

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The P-type pumps are a large family of integral membrane transporter ATPases. They are divided into five major types based on substrate specificity, from I to V.
A typical P-type pump has three cytosolic domains: nucleotide-binding (N), phosphorylation (P), and activator (A) domains. These domains are connected to the membrane-spanning helices by short amino acid segments. ATP hydrolysis and covalent phosphoenzyme intermediate formation are crucial parts of the catalytic cycle. At the highly...
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ATP Driven Pumps III: V-type Pumps01:30

ATP Driven Pumps III: V-type Pumps

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V-type pumps are ATP-driven pumps found in the vacuolar membranes of plants, yeast, endosomal and lysosomal membranes of animal cells, plasma membranes of a few specialized eukaryotic cells, and some prokaryotes. They are also known as the V1Vo-ATPase, that couple ATP hydrolysis to transport protons against a concentration gradient.
The peripheral or cytosolic V1 domain with eight subunits is involved in ATP hydrolysis. The integral or transmembrane V0 domain containing at least five subunits...
3.8K
Active Transport01:14

Active Transport

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Active transport is a critical biological process that allows cells to move solutes against an electrochemical gradient. This process requires direct energy input and is characterized by its selectivity, saturability, and susceptibility to competitive inhibition.
Primary active transporters, like Na+, K+ and -ATPase, directly utilize ATP to move ions across the membrane. These transporters play significant roles in various physiological processes. For instance, Na+, K+ and -ATPase maintain...
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Related Experiment Video

Updated: May 1, 2026

Measuring Cation Transport by Na,K- and H,K-ATPase in Xenopus Oocytes by Atomic Absorption Spectrophotometry: An Alternative to Radioisotope Assays
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Measuring Cation Transport by Na,K- and H,K-ATPase in Xenopus Oocytes by Atomic Absorption Spectrophotometry: An Alternative to Radioisotope Assays

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Na,K-ATPase

K Geering1

  • 1Institute of Pharmacology and Toxicology, University of Lausanne, Switzerland.

Current Opinion in Nephrology and Hypertension
|November 5, 1997
PubMed
Summary
This summary is machine-generated.

The sodium-potassium pump (Na,K-ATPase) is crucial for kidney function, regulating blood pressure and fluid balance. Recent research highlights its structural features and regulatory mechanisms in the kidney.

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Use of Stopped-Flow Fluorescence and Labeled Nucleotides to Analyze the ATP Turnover Cycle of Kinesins
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Measuring Cation Transport by Na,K- and H,K-ATPase in Xenopus Oocytes by Atomic Absorption Spectrophotometry: An Alternative to Radioisotope Assays
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Use of Stopped-Flow Fluorescence and Labeled Nucleotides to Analyze the ATP Turnover Cycle of Kinesins
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Area of Science:

  • Nephrology
  • Molecular Biology
  • Physiology

Background:

  • The sodium-potassium pump (Na,K-ATPase) is essential for sodium reabsorption in the kidneys.
  • It plays a critical role in regulating extracellular volume and blood pressure.

Purpose of the Study:

  • To review recent advances in understanding Na,K-ATPase structure-function relationships.
  • To identify key regulatory mechanisms of kidney Na,K-ATPase activity in health and disease.

Main Methods:

  • Literature review of recent studies on Na,K-ATPase.
  • Analysis of structural and regulatory aspects of the enzyme in renal physiology.

Main Results:

  • Elucidation of intrinsic structural features critical for Na,K-ATPase function.
  • Identification of regulatory pathways modulating Na,K-ATPase activity in the kidney.

Conclusions:

  • Understanding Na,K-ATPase structure and regulation is key to controlling renal function.
  • These insights are vital for addressing conditions related to volume and blood pressure dysregulation.