. 2018 Sep 24;200(20):e00268-18. doi: 10.1128/JB.00268-18

TABLE 2.

MALDI-TOF mass spectrometry of EssH_STREP-treated peptidoglycan dimers

Compound	m/z		Δm/z (calculated − observed)	Predicted structure
Compound	Observed	Calculated	Δm/z (calculated − observed)	Predicted structure
1	757.60	759.93	2.33	Ala-Gln-(Gly₅)Lys-Ala-Gly^b
2	1,432.71	1,432.61	0.10	MurNAc-(Ala-Gln-(Gly₅)Lys-Ala-Gly₄)-GlcNAc^a
3	1,648.71	1,650.93	2.22	Ala-Gln-[MurNAc-(Ala-Gln-(Gly₅)Lys-Ala-Gly)-GlcNAc]Lys-Ala-Ala^b
4	1,047.53	1,047.14	0.39	MurNAc-(Ala-Gln-(Gly)Lys-Ala-Ala)-GlcNAc
5	2,438.59	2,438.76	0.17	MurNAc-(Ala-Gln-[MurNac-(Ala-Gln-(Gly₅)Lys-Ala-Gly₅)-GlcNAc]Lys-Ala-Ala)-GlcNAc^a

[M+Na]⁺ sodiated ion.

[M+H]⁺ protonated ion.