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Peptide Nanovesicles Formed by the Self-Assembly of Branched Amphiphilic Peptides

Figure 6

Secondary Structural Characterizations.

(A) Circular dichroism (CD) spectroscopy shows that the h9h5-vesicles adopt a β-structure (solid line) at pH 7.0 in 5 mM NaHCO3, a helical structure (dotted line) in 40% TFE and remains unstructured (dashed line) when lacking the lysine branch point (h9-K5). (B) FTIR spectroscopy of dried material shows the characteristic 1629 cm−1 maximum corresponding to β- secondary structure.

Figure 6