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. Author manuscript; available in PMC: 2012 Oct 12.
Published in final edited form as: J Am Chem Soc. 2011 Sep 15;133(40):16062–16071. doi: 10.1021/ja204035k

Fig. 2.

Fig. 2

(a) The overall backbone arrangement of the two-fold protofilament structural models.7 (b) The cross section of the two-fold model I, which corresponds to the structure depicted in Figure 11C of reference 7. (c) The cross section of the two-fold model II, which corresponds to the structure depicted in Figure 11D of reference 7. (d) The overall backbone arrangement of the three-fold protofilament model.92 In each diagram, for each peptide the inner strand ends with the C-terminus (and the outer strand ends with the N-terminus).