Vacuole Membrane Ion Channel Proteins (IMAGE)

University of Würzburg

Vacuole Membrane Ion Channel Proteins

Caption

Cartoon of the 3D models of the broad bean (right, pink-violet) and the thale cress (left, blue) TPC1 ion channel protein in the vacuole membrane. On the left, Calcium ions (red spheres) in the vacuole block the entrance to the channel pore and thus the transport of potassium ions (green spheres). Due to a natural variation in the amino acid sequence, the broad bean TPC1 channel pore is not blocked. The associated hyperactivity of the bean TPC1 directly affects the electrical properties of the vacuolar membrane.

Credit

Dirk Becker / University of Würzburg

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