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letter
. 2007 Aug;130(2):223–224. doi: 10.1085/jgp.200709829

Figure 1.

Figure 1.

Maximum 2H-NMR quadrupolar splittings observed for deuterated indole rings in bilayers of DMPC, either “free” to diffuse within the lipid or attached to a membrane-spanning peptide. From left to right: “free” indole (from Persson et al., 1998), four tryptophans in WALP19, and Trp13 of gramicidin A (from van der Wel et al., 2007).