Potassium Transport through the Selectivity Filter of a Potassium-Selective Ion Channel (IMAGE)

Forschungsverbund Berlin

Potassium Transport through the Selectivity Filter of a Potassium-Selective Ion Channel

Caption

Potassium transport through the selectivity filter of a potassium-selective ion channel. The channel -- presented in orange -- is only permeable for potassium ions (large green spheres). Water molecules (small blue spheres) and other ions, such as sodium (not shown) cannot pass through the channel.

Credit

Barth van Rossum / FMP

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