Table 2.

Assignment of some bands frequently found in Raman spectra of proteins [24–28]

Band frequency (cm−1)	Assignment
520–540	S–S stretching
640–829–852	Tyrosine
720	Adenine
880–895	CH2 rocking
1,002	Phenylalanine
1,061–1,129	C–N and C–C stretching
1,270–1,310	Amide III
1,340–1,345	Marker of α-helix conformation
1,440–1,460	CH2 deformation
1,553	Tryptophan
1,575	Guanine, adenine (ring stretching)
1,606	Phenylalanine
1,650–1,680	Amide I