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Updated: Apr 21, 2026

Capturing the Interaction Kinetics of an Ion Channel Protein with Small Molecules by the Bio-layer Interferometry Assay
Published on: March 7, 2018
BK channel activators and their therapeutic perspectives
Bo H Bentzen1, Søren-Peter Olesen2, Lars C B Rønn3
1Department of Biomedical Sciences, Faculty of Health Sciences, Danish Arrhythmia Research Centre, University of Copenhagen Copenhagen, Denmark ; Acesion Pharma Copenhagen, Denmark.
The large conductance calcium- and voltage-activated K(+) channel (BK channel) integrates cellular signals to regulate physiological functions. Small organic molecules activating BK channels are crucial tools for understanding its roles in health and disease.
Area of Science:
- Physiology
- Molecular Biology
- Pharmacology
Background:
- The large conductance calcium- and voltage-activated K(+) channel (KCa1.1, BK, MaxiK) is widely expressed.
- BK channels link intracellular calcium and membrane potential changes to potassium currents.
- They play key roles in smooth muscle tone, neurotransmitter release, and neuronal excitability.
Purpose of the Study:
- To introduce the structure, function, and regulation of BK channels.
- To review small organic molecules that activate BK channels.
- To discuss how these activators aid in understanding BK channel roles in health and disease.
Main Methods:
- Literature review of BK channel structure, function, and regulation.
- Survey of small organic molecules known to activate BK channels.
- Analysis of studies utilizing BK channel activators to explore physiological roles.
Main Results:
- BK channels act as a negative feedback system, integrating calcium and voltage signals.
- Numerous small organic molecules have been identified as BK channel activators.
- These tool compounds have been instrumental in elucidating BK channel functions.
Conclusions:
- BK channels are critical regulators of diverse physiological processes.
- Small molecule activators are valuable research tools for BK channel studies.
- Understanding BK channel modulation offers therapeutic potential for various diseases.
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