Potassium channel open — Free Biology Illustration

Biology

Potassium channel open

Scientific diagram of a potassium-selective transmembrane channel in the open conformation, spanning the thickness of a lipid bilayer. The protein is shown as a symmetric, tetrameric, barrel-like membrane complex in green, teal, light blue, or violet-blue, with a clearly visible continuous central pore running from one side of the membrane to the other. The inner gate elements are splayed apart to create a pronounced conductive opening, and a narrow selectivity filter region is visible within the pore aligned for K+ passage, indicating free ion flow through the open channel.

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