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Related Concept Videos

ATP Driven Pumps II: P-type Pumps01:34

ATP Driven Pumps II: P-type Pumps

6.8K
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 I: An Overview01:27

ATP Driven Pumps I: An Overview

10.4K
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 Driven Pumps III: V-type Pumps01:30

ATP Driven Pumps III: V-type Pumps

5.2K
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...
5.2K
ATP Synthase: Mechanism01:48

ATP Synthase: Mechanism

18.8K
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...
18.8K
ATP Synthase: Structure01:18

ATP Synthase: Structure

17.4K
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...
17.4K
Primary Active Transport01:47

Primary Active Transport

205.6K
In contrast to passive transport, active transport involves a substance being moved through membranes in a direction against its concentration or electrochemical gradient. There are two types of active transport: primary active transport and secondary active transport. Primary active transport utilizes chemical energy from ATP to drive protein pumps that are embedded in the cell membrane. With energy from ATP, the pumps transport ions against their electrochemical gradients—a direction...
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Related Experiment Video

Updated: Mar 28, 2026

Measuring In Vitro ATPase Activity for Enzymatic Characterization
07:38

Measuring In Vitro ATPase Activity for Enzymatic Characterization

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An Introduction to P-type ATPase Research.

Poul Nissen1

  • 1Department of Molecular Biology and Genetics, Aarhus University, Gustav Wieds Vej 10c, 8000, Aarhus C, Denmark. pn@mbg.au.dk.

Methods in Molecular Biology (Clifton, N.J.)
|December 24, 2015
PubMed
Summary

P-type ATPases are crucial for cellular energy use, maintaining ion gradients and lipid asymmetry. Research is evolving to explore their complex roles in physiology and disease.

Area of Science:

  • Biochemistry and biophysics
  • Cellular and molecular biology

Background:

  • P-type ATPases are vital cellular pumps responsible for maintaining electrochemical gradients of cations and heavy metals.
  • They also play a critical role in establishing asymmetric lipid distributions within cell membranes.
  • These enzymes represent a significant portion of cellular energy expenditure.

Discussion:

  • The study highlights the extensive history of biochemical and biophysical research on P-type ATPases.
  • It emphasizes the ongoing evolution of research methodologies in this field.
  • Novel approaches are being adopted to deepen the understanding of P-type ATPase mechanisms.

Key Insights:

  • P-type ATPases play a fundamental role in cellular energy homeostasis.
  • Their functions extend to regulating ion transport and membrane lipid asymmetry.

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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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  • Understanding these pumps is key to comprehending complex biological processes.

    • Outlook:

    • Future research will integrate P-type ATPase function into advanced molecular networks.
    • This integration aims to elucidate their roles in molecular physiology and behavior.
    • Investigating P-type ATPases offers potential insights into disease mechanisms.