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Channel Rhodopsins

Channel Rhodopsins

Most organisms use photoreceptors to sense and respond to light. Examples of photoreceptors include bacteriorhodopsins and bacteriophytochromes in some bacteria, phytochromes in plants, and rhodopsins in the photoreceptor cells of the vertebral retina. The light-sensitive property of these receptors is because of the bound chromophores, such as bilin in the phytochromes and retinal in the rhodopsins.
Rhodopsins belong to the family of cell surface proteins called G-protein coupled receptors,...

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Related Experiment Video

Updated: Sep 4, 2025

In vivo Optogenetic Stimulation of the Rodent Central Nervous System

In vivo Optogenetic Stimulation of the Rodent Central Nervous System

Published on: January 15, 2015

Rhodopsin-Based Optogenetics: Basics and Applications.

Alexey Alekseev¹, Valentin Gordeliy², Ernst Bamberg³

¹Research Center for Molecular Mechanisms of Aging and Age-Related Diseases, Moscow Institute of Physics and Technology (National Research University), Dolgoprudny, Russia.

Methods in Molecular Biology (Clifton, N.J.)

|July 20, 2022

Summary

This summary is machine-generated.

Optogenetics uses light to control cells with high precision, impacting neuroscience, physiology, and cell biology. New tools and applications are advancing research and clinical trials, particularly for vision restoration.

Keywords:

Behavior Channelrhodopsins Microbial rhodopsins Neuroscience Optogenetics

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Related Experiment Videos

Last Updated: Sep 4, 2025

In vivo Optogenetic Stimulation of the Rodent Central Nervous System

In vivo Optogenetic Stimulation of the Rodent Central Nervous System

Published on: January 15, 2015

Advanced Cardiac Rhythm Management by Applying Optogenetic Multi-Site Photostimulation in Murine Hearts

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Published on: August 26, 2021

Laser-scanning Photostimulation of Optogenetically Targeted Forebrain Circuits

Laser-scanning Photostimulation of Optogenetically Targeted Forebrain Circuits

Published on: December 27, 2013

Area of Science:

Neuroscience
Cell Biology
Physiology

Background:

Optogenetics, utilizing rhodopsin-based light-gated channels and pumps, offers precise control over electrically excitable cells.
This technique enables electrode-free, minimally invasive manipulation of cells in various biological contexts.
Genetic tools like virus-induced transduction allow for highly specific cell targeting in tissues and living organisms.

Purpose of the Study:

To provide a comprehensive overview of light-gated channels and ion pumps used in optogenetics.
To discuss the structure, function, and mechanisms of microbial rhodopsins, focusing on CrChR2.
To explore emerging optogenetic tools and compare the efficacy of ion channels versus ion pumps for biomedical applications.

Main Methods:

Review of existing literature on rhodopsin structure and function.
Analysis of biophysical and biochemical data for microbial rhodopsins.
Discussion of genetic engineering techniques for cell-specific targeting.

Main Results:

Optogenetics provides unparalleled spatiotemporal resolution for cell manipulation.
CrChR2 remains a primary tool, with ongoing research into its molecular mechanisms.
Newer optogenetic tools are being developed for specialized applications and optimization.

Conclusions:

Optogenetics is a revolutionary tool with broad applications in neuroscience, behavior studies, and neurodegenerative disease research.
Clinical trials are exploring optogenetics for vision restoration, highlighting its therapeutic potential.
Continued development of optogenetic tools is crucial for advancing biomedical applications.