Table 1. Secondary structure content of aS dimers as determined by FTIR spectroscopy analysis reported in Fig. 2.
Wavenumber a (cm−1) | Structural Assignment | aS % b | NN % b | CC % b | NC % b | DC % b | 1–99 % b |
1530 | β-sheet/turns | 10 | 3 | 17 | 5 | 3 | - |
1560–1568 | Glu (COO−) | 12 | 25 | 25 | 22 | 14 | 8 |
1580–1586 | Asp (COO−) | 9 | 5 | 6 | 7 | 7 | - |
1610–1612 | Tyr/β-sheet | - | 12 | 21 | 12 | 5 | - |
1640 | Random | 55 | 38 | 17 | 42 | 54 | 69 |
1656–1671 | Turns | 14 | 17 | 14 | 12 | 17 | 23 |
Peak position of the amide I band components, as deduced by the second derivative spectra.
Percentage area of the amide I band components, as obtained by integrating the area under each deconvoluted band.