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Related Concept Videos

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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Primary Active Transport01:47

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 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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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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Drug Absorption Mechanism: Carrier-Mediated Membrane Transport01:19

Drug Absorption Mechanism: Carrier-Mediated Membrane Transport

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Certain large, lipid-insoluble drug molecules that resemble amino acids, peptides, or glucose, require specialized carrier proteins to facilitate their diffusion across cell membranes. This transport can occur through either facilitated diffusion, which does not require energy input, or active transport, which does require energy input.
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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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Controllable Ion Channel Expression through Inducible Transient Transfection
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Light-Driven Active Ion Transport.

Jinlei Yang1, Pengchao Liu1, Lianshan Li1

  • 1CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Centre for, Nanoscience and Technology, Beijing, 100190, P. R. China.

Chemistry (Weinheim an Der Bergstrasse, Germany)
|May 20, 2020
PubMed
Summary
This summary is machine-generated.

Researchers developed artificial light-driven systems for active ion transport using solar energy. These photo-responsive membranes offer new possibilities for energy conversion and water treatment applications.

Keywords:
ion transportlight-drivenmembranesnanochannelsphotochemistry

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Area of Science:

  • Biomimetic Nanotechnology
  • Energy Conversion
  • Membrane Science

Background:

  • Biological systems utilize solar energy for directional ion transport.
  • Photo-active ion channels and pumps are bio-inspired for active ion transport.
  • Limitations in membrane materials hinder effective light-driven ion transport.

Purpose of the Study:

  • To present and discuss state-of-the-art technologies for artificial light-driven active ion transport systems.
  • To explore the utilization of solar energy for chemically and physically active ion transport.
  • To identify key factors for developing highly effective and selective membranes.

Main Methods:

  • Development of photo-responsive physical ion pumps in all-solid-state membranes.
  • Utilizing solar energy to drive active ion transport mechanisms.
  • Fabrication of artificial light-driven active ion transport systems.

Main Results:

  • Demonstration of artificial light-driven active ion transport systems.
  • Potential for new membrane-based materials for active ion transport.
  • Identification of critical factors for membrane performance.

Conclusions:

  • Advances in photo-responsive membranes enable new classes of active ion transport systems.
  • Light-driven active ion transport holds promise for energy conversion, bio-interfaces, and water treatment.
  • Further development is crucial for optimizing membrane selectivity and efficiency.