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Related Concept Videos

Ion Channels01:19

Ion Channels

The movement of ions like sodium, potassium, and calcium into and out of the cell is essential to maintain the electrochemical gradient in living cells. The ion channels—a class of membrane transport proteins—help maintain this ionic gradient for the smooth functioning of physiological activities such as maintaining cell size and volume, conducting nerve impulses, and gas and nutrient exchange.
Ion channels are specialized integral membrane proteins on the plasma membrane that allow specific...
Mechanically-gated Ion Channels01:12

Mechanically-gated Ion Channels

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...
Mechanically-gated Ion Channels01:12

Mechanically-gated Ion Channels

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...
Voltage-gated Ion Channels01:26

Voltage-gated Ion Channels

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 types of...
Voltage-gated Ion Channels01:26

Voltage-gated Ion Channels

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 types of...
Non-gated Ion Channels01:24

Non-gated Ion Channels

Ion channels are specialized proteins on the plasma membrane that allow charged ions to pass down their electrochemical gradient. Their main function is to maintain the membrane potential which is critical for cell viability. These channels are either gated or non-gated and can transport more than a thousand ions within milliseconds for the cellular event to occur.
Compared to the gated ion channels, the non-gated channels, also known as leakage or passive channels, have no gating mechanism.

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Recapitulation of an Ion Channel IV Curve Using Frequency Components
10:14

Recapitulation of an Ion Channel IV Curve Using Frequency Components

Published on: February 8, 2011

Techniques for studying ion channels: an introduction.

M Tester1

  • 1Department of Plant Sciences, University of Cambridge, Downing St., Cambridge CB2 3EA, UK.

Journal of Experimental Botany
|January 20, 2011
PubMed
Summary
This summary is machine-generated.

This review explains electrophysiological techniques for studying plant ion channels. Methods like voltage clamping and tail currents help understand channel function and selectivity.

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Last Updated: Jun 5, 2026

Recapitulation of an Ion Channel IV Curve Using Frequency Components
10:14

Recapitulation of an Ion Channel IV Curve Using Frequency Components

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Patch Clamp and Perfusion Techniques for Studying Ion Channels Expressed in Xenopus oocytes
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Published on: January 10, 2011

One-channel Cell-attached Patch-clamp Recording
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Published on: June 9, 2014

Area of Science:

  • Plant Biology
  • Biophysics

Background:

  • Ion channels are crucial for plant physiological processes.
  • Understanding their function requires specialized techniques.

Purpose of the Study:

  • To review fundamental electrophysiological methods for studying plant ion channels.
  • To provide an overview of techniques applicable to both whole-cell and single-channel recordings.

Main Methods:

  • Electrophysiological recording techniques are detailed.
  • Voltage clamping and current measurement over time are explained.
  • Current-voltage relationships and tail current protocols are described for selectivity analysis.

Main Results:

  • The review outlines standard electrophysiological approaches.
  • It covers methods for analyzing ion channel behavior.
  • Techniques are presented for whole-cell and single-channel analysis.

Conclusions:

  • Electrophysiology provides essential tools for plant ion channel research.
  • These methods are fundamental for characterizing channel properties.
  • The reviewed techniques are vital for advancing plant science.