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. Author manuscript; available in PMC: 2019 Apr 1.
Published in final edited form as: Prog Nucl Magn Reson Spectrosc. 2018 Feb 8;105:41–53. doi: 10.1016/j.pnmrs.2018.02.001

Figure 3.

Figure 3

Membrane mimetics for solution NMR studies of membrane proteins. (A) Micelle, (B) bicelle, (C) nanodisc, (D) amphipol, (E) Lipodisq or SMALP, (F) bilayer in a liposome. A hypothetical four-helical bundle protein is shown in green in all cases. Micelles and bicelles are shown in cut-open views in order to show the differences of these two systems. Membrane scaffold protein (MSP) helices in nanodiscs are shown in brown in (C); amphipols are shown in blue in (D); SMA polymers are shown as orange belts in (E).