Bands

Aβ free

Aβ + L-arginine 0.24 mM

Aβ + L-arginine 0.36 mM

Aβ + L-arginine 0.48 mM

Aβ + L-arginine 0.72 mM

Amide I

Antiparallel β-sheets

0.2

0.2

0.2

0.1

0.1

(1600 - 1610 cm−1)

Parallel β-sheets

16.3

11.2

10.7

8.6

10.2

1610 - 1629cm−1

Random coil

31.4

35.4

36.7

40.4

42.1

(1629 - 1650 cm−1)

α-helix

24.8

28.0

29.8

31.7

30.0

(1650 - 1669 cm−1)

β-turns

8.4

7.6

7.3

6.0

4.7

(1669 - 1685cm−1)

Antiparallel β-sheets

18.9

17.6

15.3

13.2

12.9

(1685 - 1700 cm−1)

Amide II

Parallel β-sheet

12.1

10.9

7.7

7.5

7.3

1480 - 1495

Random coil

27.2

33.6

37.1

38.9

39.2

1498 - 1515

Anti-parallel β-sheets

26.3

20.7

17.4

15.9

9.0

1515 - 1538

α-helix

14.8

17.1

22.1

25.4

28.3

1538 - 1560

β-turns

7.4

8.6

9.3

10.0

15.9

1560 - 1577

Anti-parallel β-sheets

12.3

9.2

6.4

2.3

0.4

1577 - 1600