Ion channels allow specific ions to flow across the cell membrane at rates of ten million ions per second with error rates of only 1 in 1,000. The structure of a protein that accomplishes this feat has now been discovered.
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Clapham, D. At last, the structure of an ion-selective channel. Nat Struct Mol Biol 5, 342–344 (1998). https://doi.org/10.1038/nsb0598-342
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DOI: https://doi.org/10.1038/nsb0598-342