Table 2 List of vibrational frequency bands in Amide I region of common protein secondary structures in aqueous solution. Information is collected from references [72,73,74]
Protein secondary structure | Amide I frequency (cm−1) |
|---|---|
Side chain moieties | 1600–1616 |
Extended chains/β-sheets, aggregated strands | 1610–1630 |
Extended chains/β-sheets/short-segment chains connecting the α-helical segment | 1630–1640 |
Random coil | 1637–1648 |
α-Helix | 1648–1660 |
β-turns | 1665–1685 |
Antiparallel β-Sheets | 1675–1695 |