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. 2014 Apr 7;9(4):e93906. doi: 10.1371/journal.pone.0093906

Table 1. Tentative assignments of Raman bands (human tissue).

Position of character peak Biochemical Assignments Biomolecular Assignments
622 δc-c (Twisted) phenylalanine Phenylalanine, Tyrosine
645 dC Nucleic acid
669 dT Nucleic acid
721 dA Nucleic acid
758 νs (Indole ring breathing) Tryptophan
786 νsPO2- group DNA, RNA
829 νasPO2- Nucleic acid
855 ν C-C Proline Protein (collagen)
877 ν C-C Hydroxyproline Protein (collagen)
938 ν C-C Proline and valine (α-helix) Protein (collagen)
957 δCH3 (deformed) Lipid, protein
1001–1004 ν ring breathing Phenylalanine, protein
1033 δC-H (Plane bending) aromatic compound Phenylalanine, tryptophan, tyrosine
1065 ν -C = C = C-
1083–1095 νs -O-P-O-, v C-C phospholipid Nucleic acid (DNA, RNA)
1127 ν C-N protein, v C-C lipid Protein, Lipid
1157.00 Polyene chain Carotenoids
1173 δC-H (In-plane bending) phenylalanine, tyrosine Phenylalanine, tyrosine (protein)
1209 ν C-C6H5 Tryptophan and phenylalanine Tryptophan, phenylalanine (protein)
1230–1240 Amino compound III (β fold)
1245–1255 Amino compound III (random coil, corner)
1264–1272 Amino compound III (α-helix)
1266 ν C-H and δH-N- (Bending) amino compound III Protein
1288–1304 Lipid ch2 bending vibration and bending vibration ch2ch3
1320–1340 ν Ch2ch3 and δCh2ch3 (Swing) proteins and nucleic acids Protein, nucleic acid
δC-H (Plane deformation) ordinary olefin Unsaturated fatty acid
1448 δCH2 (Bending) proteins and lipids Protein, Lipid
1527 ν C-C Carotenoids Carotenoid
1551 νas -NO2
1585 ν c = c Lipid Unsaturated fatty acid
1605 ν C = C Aromatic compound Phenylalanine, tyrosine
1617 ν C = C Porphyrin and tryptophan
1640-1680 Amino compounds I, α helix Protein

ν: stretching vibration, νas: asymmetric stretching vibration, νs: symmetric stretching vibration, δ: bending, deformed, swing (relative peak intensity = the peak intensity/average intensity of the full spectrum).