Target intelligence / Profile preview

Channelrhodopsin (ChR)

Target: ChR
Molecular classification: Retinylidene protein, Light-gated ion channel, Opsin

Overview

Channelrhodopsins are a subfamily of retinylidene proteins that function as light-gated ion channels. When expressed in cells, channelrhodopsins enable optical control over cellular excitability and physiological processes, making them foundational tools for optogenetics. Upon illumination, they open an ion-conducting pore across the membrane, leading to either depolarization (excitation) or hyperpolarization (inhibition) depending on the ion selectivity of the channel variant.

Other names: ChR1ChR2ACRsKCRsVChR1Channelrhodopsin-1Channelrhodopsin-2

Mechanism of action

Light-gated ion channel activation leading to depolarization or hyperpolarization of cells.

Biological functions

PhototaxisLight-gated ion conductanceNeuronal excitationNeuronal inhibition

Disease associations

Neurological disorders (potential therapeutic target)

Safety considerations

Potential off-target effectsImmunogenicity (in gene therapy approaches)PhototoxicityLong-term effects of altered neuronal activity

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