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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 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...
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Primary Active Transport01:29

Primary Active Transport

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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 embedded in the cell membrane. With energy from ATP, the pumps transport ions against their electrochemical gradients—a direction they would...
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Pore Transport and Ion-Pair Transport01:17

Pore Transport and Ion-Pair Transport

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Pore transport and ion-pair formation are critical mechanisms for the absorption and distribution of drugs in the body.
Pore transport, also known as convective transport, is a process where small molecules like urea, water, and sugars rapidly cross cell membranes as though there were channels or pores in the membrane. Although direct microscopic evidence is limited  but the concept of pores or channels is widely accepted based on physiological evidence. Despite the lack of direct...
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Ion Exchange01:17

Ion Exchange

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Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or...
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Bioinspired Soft Robot with Incorporated Microelectrodes
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Bioinspired Artificial Ion Pumps.

Tingting Mei1, Hongjie Zhang1, Kai Xiao1

  • 1Department of Biomedical Engineering, Southern University of Science and Technology (SUSTech), Shenzhen 518055, P.R. China.

ACS Nano
|August 29, 2022
PubMed
Summary
This summary is machine-generated.

Artificial ion pumps mimic biological systems to transport ions, utilizing diverse mechanisms like asymmetric structures, pH gradients, light, or electrons. This review summarizes their working principles, applications, and future challenges in advanced materials and nanotechnology.

Keywords:
artificial nanochannelbiomimetic materialsbionicsenergy conversionion pumpion transportiontronicsnanofluidicnanoionics

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Area of Science:

  • Biomimetic Nanotechnology
  • Membrane Transport Systems
  • Materials Science

Background:

  • Ion pumps are crucial biological transporters, regulating cell functions by moving ions against gradients using adenosine triphosphate.
  • Advancements in materials science and nanotechnology have spurred the development of artificial ion pumping systems.
  • These artificial systems offer diverse structures and functions, inspired by natural biological processes.

Purpose of the Study:

  • To review and categorize bioinspired artificial ion pumps.
  • To discuss the working mechanisms, functions, and applications of these artificial systems.
  • To identify current challenges and future research directions in artificial ion pumping.

Main Methods:

  • Categorization of artificial ion pumps into four types: asymmetric structure-driven, pH gradient-driven, light-driven, and electron-driven.
  • Discussion of the working principles for each category.
  • Review of existing literature on functions and applications.

Main Results:

  • Summary of four distinct categories of bioinspired artificial ion pumps.
  • Detailed explanation of the mechanisms driving ion transport in each category.
  • Overview of the diverse applications of these artificial systems.

Conclusions:

  • Artificial ion pumps represent a rapidly advancing field with significant potential.
  • Key challenges remain in optimizing efficiency, stability, and scalability.
  • Future research should focus on overcoming these challenges to broaden applications in areas like sensing and energy.