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. Author manuscript; available in PMC: 2012 Mar 23.
Published in final edited form as: J Am Chem Soc. 2011 Feb 28;133(11):4018–4029. doi: 10.1021/ja109679q

Figure 5.

Figure 5

13C-13C dipolar recoupling data for the Val18 carbonyl site (a) and Ala21 methyl site (b) in D23N-Aβ1-40 fibrils. Data are shown for unseeded (Ag0 and Bg0) and generation 9 (Ag9 and Bg9) fibrils. Simulated curves are for linear chains of 13C nuclei with the indicated spacings. Molecular models created with MOLMOL32 are shown for ideal antiparallel (c) and parallel (d) β-sheets. Intermolecular distances for Val18 carbonyl sites (upper models) and Ala21 methyl sites (lower models) are shown. The 13C labels are yellow.