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. Author manuscript; available in PMC: 2009 Mar 2.
Published in final edited form as: J Phys Chem B. 2006 Dec 28;110(51):26313–26319. doi: 10.1021/jp063762a

Figure 2.

Figure 2

Models used in the density functional theory calculations. In Model A (top) Tyr153 forms a hydrogen bond (orange dashed line) with the 5-HT indole nitrogen. In Model B (center) Tyr143 forms a hydrogen bond (orange dashed line) with the 5-HT charged amine group. In Model C (bottom) Tyr234 forms a cation-π interaction (cyan dashed line) with the 5-HT charged amine group.