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相关概念视频

Voltage-gated Ion Channels01:26

Voltage-gated Ion Channels

8.2K
Voltage-gated ion channels are transmembrane proteins that open and close in response to changes in the membrane potential. They are present on the membranes of all electrically excitable cells such as neurons, heart, and muscle cells.
Generally, all voltage-gated ion channels have a 'voltage-sensing domain' that spans the lipid bilayer. The charged residues in the sensor move in response to the membrane potential changes that open the channel allowing ions movement. There are several...
8.2K
Patch Clamp01:18

Patch Clamp

5.4K
Many fundamental cell functions such as muscle contraction and nerve transmission rely on the electrical signals produced by the movement of positively and negatively charged ions across the cell membrane. One competent method to record current flowing across the whole cell or single ion channel is the patch-clamp technique.
In this method, a glass micropipette containing electrolyte solution is tightly sealed against a small portion of the cell membrane. As a result, a patch of the cell...
5.4K
Short-distance Transport of Resources02:12

Short-distance Transport of Resources

16.0K
Short-distance transport refers to transport that occurs over a distance of just 2-3 cells, crossing the plasma membrane in the process. Small uncharged molecules, such as oxygen, carbon dioxide, and water, can diffuse across the plasma membrane on their own. In contrast, ions and larger molecules require the assistance of transport proteins due to their charge or size. Transport across membranes also occurs within individual cells, playing a variety of essential roles for the plant as a whole.
16.0K
The Role of Ion Channels in Neuronal Computation01:19

The Role of Ion Channels in Neuronal Computation

3.2K
A postsynaptic neuron usually receives numerous impulses from several other presynaptic neurons. The axon hillock of the postsynaptic neuron integrates all these signals and determines the likelihood of firing an action potential.
Sometimes a single EPSP is strong enough to induce an action potential in the postsynaptic neuron. However, multiple presynaptic inputs must often create EPSPs around the same time for the postsynaptic neuron to be sufficiently depolarized to fire an action potential....
3.2K
Mechanically-gated Ion Channels01:12

Mechanically-gated Ion Channels

6.4K
Mechanically-gated ion channels are proteins found in eukaryotic and prokaryotic cell membranes that open in response to mechanical stress. Tension, compression, swelling, and shear stress can alter the conformation of the protein, opening a transmembrane channel that allows the passage of ions for signal transmission. In eukaryotes, mechanically-gated channels are distributed in several regions like the neurons, lungs, skin, bladder, and heart, where they play critical roles in numerous...
6.4K
Ligand-gated Ion Channels01:19

Ligand-gated Ion Channels

12.4K
Ligand-gated ion channels are transmembrane proteins with a channel for ions to pass through and a binding site for a ligand. The channel opens only when a ligand attaches to the binding site.
Three Subfamilies of Ligand-gated Ion Channels
Ligand-gated ion channels fall into three subfamilies. The 'Cys-loop' includes the nicotinic acetylcholine receptors, γ-aminobutyric acid (GABA), glycine, and 5-hydroxytryptamine receptors. The second one is the 'Pore-loop' channels that...
12.4K

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相关实验视频

Updated: Jun 25, 2025

Patch Clamp and Perfusion Techniques for Studying Ion Channels Expressed in Xenopus oocytes
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Patch Clamp and Perfusion Techniques for Studying Ion Channels Expressed in Xenopus oocytes

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关于植物摇器K+通道的研究进展

Guang Yuan1,2, Tongjia Nong1,2, Oluwaseyi Setonji Hunpatin1,2

  • 1Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266101, China.

Plants (Basel, Switzerland)
|May 25, 2024
PubMed
概括

这项研究回顾了Shaker (K+) 通道,这些通道对植物细胞膜功能和离子运输至关重要. 了解这些道有助于提高作物产量和抗压能力.

关键词:
在Shaker K+频道上播放.功能 功能 功能 功能 功能蛋白质结构 蛋白质结构监管机制 监管机制研究方法研究方法.

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Mutagenesis and Functional Analysis of Ion Channels Heterologously Expressed in Mammalian Cells
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Mutagenesis and Functional Analysis of Ion Channels Heterologously Expressed in Mammalian Cells

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Recording of Inward Rectifying K+ Currents in Freshly Isolated Basilar Artery Smooth Muscle Cells by Patch Clamp Technique
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Recording of Inward Rectifying K+ Currents in Freshly Isolated Basilar Artery Smooth Muscle Cells by Patch Clamp Technique

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Last Updated: Jun 25, 2025

Patch Clamp and Perfusion Techniques for Studying Ion Channels Expressed in Xenopus oocytes
10:19

Patch Clamp and Perfusion Techniques for Studying Ion Channels Expressed in Xenopus oocytes

Published on: January 10, 2011

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Mutagenesis and Functional Analysis of Ion Channels Heterologously Expressed in Mammalian Cells
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Mutagenesis and Functional Analysis of Ion Channels Heterologously Expressed in Mammalian Cells

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Recording of Inward Rectifying K+ Currents in Freshly Isolated Basilar Artery Smooth Muscle Cells by Patch Clamp Technique
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Recording of Inward Rectifying K+ Currents in Freshly Isolated Basilar Artery Smooth Muscle Cells by Patch Clamp Technique

Published on: February 7, 2025

253

科学领域:

  • 植物生物学 植物生物学
  • 分子生物学分子生物学
  • 生物物理学的生物物理.

背景情况:

  • 细胞膜对于植物生长至关重要,调节离子度和信号传导.
  • (K+) 通道对于维持细胞平衡和植物功能至关重要.
  • 由于它们的基本作用,Shaker K+通道是植物离子通道研究的重点.

研究的目的:

  • 提供Shaker K+道进步的全面概述.
  • 详细介绍蛋白质的结构,功能,调节和研究技术.
  • 突出Shaker K+道对植物生理学和农业的重要性.

主要方法:

  • 对Shaker K+通道研究的文献评论.
  • 蛋白质结构分析和功能研究.
  • 审查监管机制和实验方法.

主要成果:

  • 摇的K+通道是植物细胞中离子吸收和传输的组成部分.
  • 对这些通道的研究加深了对植物细胞膜动态的理解.
  • 方法上的进步为未来的离子通道研究提供了解决方案.

结论:

  • 了解Shaker K+通道是提高作物产量和耐压力的关键.
  • 本综述是植物离子通道科学研究人员的参考.
  • 对Shaker K+道的进一步调查将推动植物生物技术的创新.