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Wednesday, October 21, 2026Updated 13:12 UTC

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More current with less calcium: Computational models help solve longstanding ion channel evolution mystery

Source: Phys.org · Oct 21, 2026 09:00 UTC

Black-and-white close-up of chemistry lab glassware by a window — File photo euthman / Flickr · CC BY-SA 2.0 · Source

The Quick Take

In the early 1980s, scientists observed an anomaly. Embedded within cell membranes, they identified ion channels with extraordinarily high conductance. These so-called "BK" (Big K, or Big Potassium) channels had roughly 10 times the unitary conductance (i.e., conductance per individual channel molecule) of other potassium channels, enabling much more efficient, rapid transport of potassium ions. A

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