|
|
Table 3. Frequency assignments and relative areas of the amide I components of araujiain in buffer Tris-HCl (pH 8), and in ethylene glycol and N,N-dimethylformamide (with low water content). |
|
|
Buffer |
Ethylene glycol |
N,N-Dimethylformamide |
|
|
v (± 2 cm-1) |
Relative areas |
Relative areas |
Relative areas |
|
|
β-sheet |
1636 |
4.88 |
1.609 |
2.31 |
|
1689 |
0.56 |
1.742 |
3.955 |
|
|
1698 |
2.9 |
0.348 |
0.483 |
|
|
α-helix |
1660 |
0.931 |
7.826 |
10.61 |
|
random |
1647 |
2.117 |
0.807 |
1.718 |
|
1653 |
3.124 |
5.632 |
12.86 |
|
|
β-turn |
1669 |
1.316 |
0.76 |
2.95 |
|
1674 |
1.232 |
0.69 |
0.75 |
|
|
1683 |
1.841 |
0.807 |
1.068 |
|
|