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相关概念视频

ATP Driven Pumps I: An Overview01:27

ATP Driven Pumps I: An Overview

7.8K
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...
7.8K
ATP Driven Pumps II: P-type Pumps01:34

ATP Driven Pumps II: P-type Pumps

4.4K
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

3.5K
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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G-Protein Gated Ion Channels01:21

G-Protein Gated Ion Channels

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GPCRs are primarily responsible for our sense of smell, taste, and vision.  The binding of a sensory stimulus activates GPCR to stimulate effector proteins, many of which are ion channels in the sensory organs. GPCRs modulate the opening and closing of the target ion channels either directly by binding them, or by releasing second messengers that activate these channels. As ions move across the membrane, the membrane potential is altered, which induces an appropriate response.
Sensory...
4.5K
Primary Active Transport01:29

Primary Active Transport

9.4K
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...
9.4K
Facilitated Transport01:19

Facilitated Transport

10.6K
The chemical and physical properties of plasma membranes cause them to be selectively permeable. Since plasma membranes have both hydrophobic and hydrophilic regions, substances need to be able to transverse both regions. The hydrophobic area of membranes repels substances such as charged ions. Therefore, such substances need special membrane proteins to cross a membrane successfully. In  facilitated transport, also known as facilitated diffusion, molecules and ions travel across a...
10.6K

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Updated: May 14, 2025

Experimental Methods for Trapping Ions Using Microfabricated Surface Ion Traps
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Experimental Methods for Trapping Ions Using Microfabricated Surface Ion Traps

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人工光驱动的离子

Weipeng Xian1, Ruifen Shi1, Sai Wang2

  • 1Zhejiang University, College of Chemical and Biological Engineering, CHINA.

Chemistry (Weinheim an der Bergstrasse, Germany)
|May 13, 2025
PubMed
概括
此摘要是机器生成的。

人工光驱动的离子模仿自然,将太阳能转化为定向离子运输. 本综述探讨了用于可持续能源和海水淡化应用的光电和分子光传导机制.

关键词:
离子 * 离子通道 * 光电驱动的运输 * 分子光传导 * 活性运输

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科学领域:

  • 材料科学 材料科学 材料科学
  • 生物仿真工程 生物仿真工程
  • 能源转换 能源转换

背景情况:

  • 自然离子有效地将太阳能转化为定向离子运输,这对细胞过程至关重要.
  • 人工光驱动的离子以这些自然系统为灵感,用于能源采集和海水淡化.

研究的目的:

  • 根据它们的基本机制,审查和分类合成光驱动离子.
  • 分析人工离子的设计策略,操作原则和材料创新.
  • 讨论光驱离子技术的当前应用和未来挑战.

主要方法:

  • 合成光驱动离子的分类,分为光电驱动的运输和分子光传导范式.
  • 对每个范式的仿生起源,设计策略和材料创新进行分析.
  • 审查新兴应用程序和剩余的挑战.

主要成果:

  • 已经确定了人工光驱动离子的两个主要机制:光电驱动的传输和分子光传导.
  • 创新包括动态光响应分子,半导体和用于控制离子运输的异构结构.
  • 对离子选择性,流量和能量转换的精确时空控制是可以实现的.

结论:

  • 光驱动的离子为可持续能源,海水淡化和生物电子技术提供了变革性的潜力.
  • 需要进一步的研究来应对实际实施和更广泛的采用所面临的挑战.
  • 仿生设计原则是推动人工离子技术发展的关键.