Table 3

Assignments of amide bands to the secondary structure of peptides and proteins (literature data)
Assignment Amide I, ν (сm−1) Amide II, ν (сm−1) Reference
α-helix 1,649; 1,653 to 1,657; 1,655 1,545 [45]
1,648 to 1,660 - [46]
1,650 to 1,652 1,540 to 1,546; 1,516 [47]
β-sheet 1,621 to 1,623; 1,630; 1,634 to 1,639; 1,647 to 1,648 1,530 [45]
1,620 to 1,640; 1,670 to 1,695 - [46]
1,633 1,530 [47]
β-turn 1,661; 1,667; 1,673; 1,677 1,528; 1,577 [45]
1,620 to 1,640; 1,650 to 1,695 - [46]
1,663; 1,670; 1,683; 1,688; 1,694 [47]
Random coil 1,648; 1,654; 1,642 to 1,657 - [45]
1,640 to 1,657; 1,660 to 1,670 - [46]

Azizova et al.

Azizova et al. Nanoscale Research Letters 2014 9:234   doi:10.1186/1556-276X-9-234

Open Data