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Target intelligence / Profile preview
Neuronal Delayed Rectifier Potassium Channel (I_DR)
- Target
- I_DR
- Molecular classification
- Ion channel, Voltage-gated potassium channel, Kv channel, Delayed rectifier potassium channel
01
Overview
The neuronal delayed rectifier potassium channel is a type of voltage-gated potassium (K+) channel primarily composed of Kv2.x subunits, particularly Kv2.1. It plays a critical role in the repolarization phase of the action potential in neurons. These channels are responsible for carrying outward K+ currents at depolarized membrane potentials, thereby restoring the resting membrane potential after an action potential and regulating neuronal excitability. Dysfunction of these channels can lead to neuronal hyperexcitability and seizures.
- Other names
- Kv2.x channelsKv2.1 channelKcnb1 channel
02
Mechanism of action
Not applicable as there are no known specific drugs yet.
03
Biological functions
Membrane repolarizationRegulation of neuronal excitabilityAction potential terminationControl of firing patterns
04
Disease associations
EpilepsySeizuresNeuronal hyperexcitabilityHyperactivityImpaired spatial learning
05
Safety considerations
Potential for causing neuronal hyperexcitability if inhibited inappropriately.Complex regulation via phosphorylation makes targeted modulation challenging.
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