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Updated: Mar 24, 2026
08:39
Whole-cell Patch-clamp Recordings for Electrophysiological Determination of Ion Selectivity in Channelrhodopsins
Published on: May 22, 2017
18.2K
Enhancing Channelrhodopsins: An Overview.
Jonas Wietek1, Matthias Prigge2
1Experimental Biophysics, Humboldt University Berlin, Invalidenstrasse 42, 10115, Berlin, Germany.
Methods in Molecular Biology (Clifton, N.J.)
|March 12, 2016
Summary
Channelrhodopsins are powerful optogenetic tools for controlling cell membrane potential. This review details new engineered variants, aiding researchers in selecting the best Channelrhodopsin for specific applications.
Area of Science:
- Neuroscience
- Biotechnology
- Molecular Biology
Background:
- Channelrhodopsins are light-gated ion channels crucial for optogenetics.
- Their application in controlling excitable cells via light has become widespread.
- The development of engineered variants aims to improve specific functionalities.
Purpose of the Study:
- To review newly engineered Channelrhodopsin variants.
- To guide researchers in selecting appropriate Channelrhodopsin variants for specific neurophysiological applications.
- To provide an overview of variant properties including expression, kinetics, ion selectivity, and wavelength responsivity.
Main Methods:
- Literature review of published studies on engineered Channelrhodopsins.
- Analysis of variant properties based on reported neurophysiological experiments.
- Categorization of variants by their mechanistic and operational characteristics.
Main Results:
- Several engineered Channelrhodopsin variants demonstrate improved efficacy over wild-type.
- New variants offer enhanced properties such as faster kinetics and altered wavelength sensitivity.
- A comprehensive overview of variant characteristics is presented to aid selection.
Conclusions:
- Engineered Channelrhodopsins significantly expand the optogenetic toolbox.
- Understanding variant-specific properties is essential for successful application in neuroscience.
- This review facilitates informed choices for researchers utilizing Channelrhodopsins in optogenetic studies.
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