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. 2021 Jul 22;11:15036. doi: 10.1038/s41598-021-93762-z

Table 1.

Assignment of vibrational modes, based on refs.1821.

Wavenumber (cm−1) Assignment
520–530 S–S disulfide stretching in (cystine or cysteine amino acids
545 ν(S–S) trans-gauche-trans (aminoacid cysteine)
555 ν(S–S) trans-gauche-trans (aminoacid cysteine)
625 C–C twisting mode of phenylalanine
770 Ring breathing of tryptophan
1317 Guanine (B,Z-marker)
1336 Guanine
1346 Glucose
1432 Deoxyribose in B or Z DNA conformation
1442 CH2 bending mode (fatty acids)
1452 Bending modes of methyl groups (collagen)
1461 δCH2 , Disaccharides
1471 C=N stretching
1481 Amide II
1558 Tryptophan
1606 Cytosine (NH2 )
1616 C=C (Tyrosine or tryptophan)
1625 Tryptophan
1645 Amide I (α-helix)
1654 Amide I (α-helix of collagen)
1664 Amide I (of collagen)
1799 C=O lipids
2100 Oxidation of fatty acids