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. Author manuscript; available in PMC: 2011 Oct 6.
Published in final edited form as: J Am Chem Soc. 2010 Oct 6;132(39):13879–13885. doi: 10.1021/ja1062532

Figure 3.

Figure 3

(a) Crystal structure of octamer 4. Alternative positions of disordered atoms are indicated with thin lines (stereoview). (b) Overlay of the structure of 4 (gray lines) and the mirror image of the structure of Boc-[(1R,2R)-ACPC]8-OBn (black lines; ref. 5c) (stereoview). The upper view is perpendicular to the helical axis, and the lower view is along the helical axis. Dashed lines indicate hydrogen bonds. Most hydrogen atoms are omitted for clarity.