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. Author manuscript; available in PMC: 2012 Feb 2.
Published in final edited form as: Chem Rev. 2004 Aug;104(8):3587–3606. doi: 10.1021/cr0304121

Figure 11.

Figure 11

1H–15N dipolar couplings simulated for (A) a straight ideal α-helix, (B) an α-helix with a 55 Å radius of curvature, and (C) an ideal α-helix with a 20° kink with their average axis tilted 15° relative to the alignment z-axis. (D–F) The average error per point shows that the periodicity in all cases is 3.6 except near the ends, where there is some deviation. (G–I) The phase is also diagnostic, where the kink is evidenced by a slight change in the phase of one sinusoid relative to the other.