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Chloride-Bicarbonate Exchanger (AE)
- Target
- AE
- Molecular classification
- Transporter, Membrane Transport Protein, Ion Exchanger
01
Overview
Chloride-bicarbonate exchangers are integral membrane proteins that facilitate the electroneutral exchange of chloride ions (Cl⁻) and bicarbonate ions (HCO₃⁻) across plasma membranes. These exchangers are crucial for maintaining acid-base balance, regulating cellular and systemic pH, disposing of metabolic CO₂ waste, and controlling fluid movement in tissues. Key isoforms include Band 3 (AE1/SLC4A1), AE2 (SLC4A2), and AE3 (SLC4A3), each with distinct tissue distributions and physiological roles. Mutations in these exchangers can lead to disorders such as hereditary spherocytosis and distal renal tubular acidosis.
- Other names
- Anion ExchangerBand 3AE1SLC4A1AE2SLC4A2AE3SLC4A3
02
Mechanism of action
Inhibition of Cl⁻/HCO₃⁻ exchange
03
Biological functions
Acid-base homeostasisCO₂ transportpH regulationElectroneutral ion exchange
04
Disease associations
Hereditary spherocytosisDistal renal tubular acidosisHemolytic anemia
05
Safety considerations
Potential disruption of acid-base balanceRisk of electrolyte imbalances
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