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1996:
Andersen O S; Saberwal G; Greathouse D V; Koeppe R E
Gramicidin channels--a solvable membrane "protein" folding problem.
Indian journal of biochemistry & biophysics 1996;
33(
5):.
The linear gramicidins are peptide antibiotics that form cation-selective channels in lipid bilayers. Gramicidin channels have very well-defined functional characteristics, and the structure of membrane-spanning gramicidin A channels is known at atomic resolution. These features make the gramicidins well suited to study how the amino acid sequence encodes the structure and function of a membrane-spanning channel. We show how one can use electrophysiological measurements to obtain structural information about conducting channels and to quantify the conformational preferences of sequence-substituted gramicidin mutants.
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