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. 2018 Jul 17;293(36):14146–14154. doi: 10.1074/jbc.RA118.002787

Table 1.

Peak assignment in reflection–absorption spectra

Lipid layer (wavenumber)					Assignment	Ref. No.
POPC	GM1^a	GlcCer^b	POPC + GM1^a	POPC + GlcCer^b	Assignment	Ref. No.
		cm⁻¹
	3342	3331			O–H, N–H stretching	(43)
2962	2964	2963	2961	2961	Asymmetric stretching –CH₃	(43, 44)
2923	2927	2926	2927	2927	Asymmetric stretching –CH₂−	(43, 44)
2880	2879	2879	2879	2879	Symmetric stretching –CH₃	(43)
2856	2855	2855	2856	2856	Symmetric stretching –CH₂−	(43, 44)
1742		1731	1741	1742	C=O stretching	(44)
	1660	1664	1667	1667	Amide I	(44, 45)
	1547	1541			Amide II	(44, 45)
1468	1466	1468	1468	1469	Scissoring bending –CH₂−	(43, 44)
	1379	1379	1379	1376	Scissoring bending –CH₃	(43, 44, 45)
1261	1243	1244	1251	1251	PO₂⁻ asymmetric stretching	(44)
1061	1065	1060	1058	1058	PO₂⁻ symmetric, C–O stretching	(44)

^a GM1/sphingomyelin/cholesterol (20:40:40).

^b GlcCer/sphingomyelin/cholesterol (20:40:40).