Gramicidin channels with Tryptophan (Trp) substituted by 7-aza-Trp or 1-Methyl-7-aza-Trp

by Sun, Haiyan; Sundaram, Shobana; Scherer, Erin M.; Greathouse, Denise V.; Koeppe II, R. Erdman; Andersen, Olaf S.