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. Author manuscript; available in PMC: 2017 Jan 5.
Published in final edited form as: Anal Chem. 2015 Dec 10;88(1):1044–1051. doi: 10.1021/acs.analchem.5b04218

Figure 3.

Figure 3

CID (NCE 18) of the 4- charge state of a) tetra-acylated S. enterica Rc (m/z 585.78) b) penta-acylated S. enterica Rc (m/z 642.33) and c) hexa-acylated S. enterica Rc (m/z 694.88) (25 spectra averaged, concentration of LPS is 100 μg/mL in 62:36:2 CHCl3:MeOH:H2O). ■= neutral loss of HPO3; & indicates that both of the indicated cleavages occur to generated a particular fragment ion. The acyl chains are numbered, and the loss of a particular acyl chain is denoted as M – N or Y - N where M represents the LPS, Y represents the lipid A portion, and N represents the acyl chain that is lost.