Table 1. Tentative assignment of relevant Raman bands in the PERS spectra.
| Wavenumber (cm–1) | Component | Tentative assignments of PERS bands |
| 475–490 | CO | Metal–CO stretching (νM–CO) |
| 495–510 | Protein | –S–S– |
| 620–660 | Protein | –C–S– |
| 1000–1005 | Protein | Ring breathing vibration of phenylalanine |
| 1012–1030 | Protein | In-plane bending mode of phenylalanine and ring breathing vibration of tryptophan |
| 1100–1140 | Lipid and protein | –C–N– vibration of proteins and conformation-dependent vibrations of lipids |
| 1210–1300 | Protein | Amide III (α-helix, β-pleated sheet, and random coil) |
| 1300–1325 | Protein and lipid | –CH2 twist |
| 1584 | Protein | Phenylalanine |
| 1850–2180 | CO | C–O stretching (νCO); linear and bridged |