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Target intelligence / Profile preview
Chloride channel protein type 2 subunit alpha (ClC-2)
- Target
- ClC-2
- Molecular classification
- Ion channel, Chloride channel, Voltage-gated ion channel, Transporter
01
Overview
Chloride channel protein type 2 subunit alpha (ClC-2), encoded by the CLCN2 gene, is a voltage-gated and osmosensitive chloride channel expressed in various tissues, including enterocytes. It plays a critical role in maintaining chloride homeostasis, regulating cell volume, and influencing membrane potential. In intestinal epithelial cells, ClC-2 contributes to transepithelial ion transport and fluid secretion/absorption. Dysfunctions in CLCN2 have been linked to potential associations with neurological conditions such as epilepsy and leukoencephalopathy, although the clinical significance remains under investigation. Classical chloride channel blockers show weak inhibition; Zn²⁺ can inhibit activity experimentally.
02
Mechanism of action
Weak inhibition by classical chloride channel blockers, zinc ions (experimental)
03
Biological functions
Chloride transportIon homeostasisCell volume regulationRegulation of membrane potentialFluid secretion/absorption in enterocytes
04
Disease associations
Epilepsy (potential)Leukoencephalopathy (potential)Myotonia congenita (linked to other CLC family members)Bartter’s syndrome (linked to other CLC family members)Osteopetrosis (linked to other CLC family members)
05
Safety considerations
Lack of highly specific and potent pharmacological inhibitorsClinical significance of mutations still under investigation
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