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In page Ion channel:

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Ion channels are also classified according to their subcellular localization. The plasma membrane accounts for around 2% of the total membrane in the cell, whereas intracellular organelles contain 98% of the cell's membrane. The major intracellular compartments are endoplasmic reticulum, Golgi apparatus, and mitochondria. On the basis of localization, ion channels are classified as:

  • Plasma membrane channels[citation needed]
    • Examples: Voltage-gated potassium channels (Kv), Sodium channels (Nav), Calcium channels (Cav, Orai) and Chloride channels (ClC)