TABLE 1.
Correlation between the secondary structures and the amide I frequencies of RNase A at low and high temperatures
| Band frequency (cm−1)
|
Assignment*
|
|
|---|---|---|
| Below 60°C | Above 60°C | |
| 1611–1618 | Side chains | Cross β-structures in aggregates |
| 1625 | Extended chains/β-sheet | Extended chains/β-sheet |
| 1629–1639 | β-Sheet | β-Sheet |
| 1638 | β-Sheet | Cross β-structures in oligomers |
| 1644–1649 | Random coil | Random coil |
| 1650–1657 | α-Helix | α-Helix |
| 1660,1668,1674 | β-Turns | β-Turns |
| 1682 | β-Sheet or turns | Cross β-structures in oligomers or aggregates |
*
Only the correlation between the IR bands and the dominant secondary structures in conformational changes were presented.