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. Author manuscript; available in PMC: 2011 May 19.
Published in final edited form as: J Am Chem Soc. 2010 May 19;132(19):6651–6653. doi: 10.1021/ja100931y

Figure 5.

Figure 5

Orbital overlaps that stabilize (left) and destabilize (right) the α-helical conformation of an AcAla4NHMe model system. (A) i→i+4 hydrogen bond. (B) n→π* interaction.