Dimer versus tetramer.
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Andersen
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Koeppe
D055592:Biophysical Phenomena; D001703:Biophysics; D006096:Gramicidin / Q000494:pharmacology*; D007473:Ion Channels / Q000737:chemistry* / Q000187:drug effects; D008956:Models, Chemical; D011487:Protein Conformation
D007473:Ion Channels; D006096:Gramicidin