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. 2009 Jul 6;191(17):5499–5509. doi: 10.1128/JB.00121-09

TABLE 5.

Structure assignments of periodate-derived lipid A and minimal core ions by MALDIb

Molecule Ion m/z Fatty acidsa No. of monosaccharides Adduct
Lipid A 1,309 3OH C14, 3OH C15, C14, C18 2 GlcN M+Na
1,069 3OH C14, 3OH C17, C14 2 GlcN M+Na
1,055 3OH C14, 3OH C16, C14 2 GlcN M+Na
1,027 2(3OH C14), C14 2 GlcN M+Na
CC9311 LPS 2,479 3OH C14, 3OH C17, C18:1, C14 2 GlcN, 6 Glc, 1 GalA M+Na
2,471 3OH C16, 3OH C16, C18:1, C14 2 GlcN, 6 Glc, 1 GalA M+H
2,457 3OH C14, 3OH C17, C18:1, C14 2 GlcN, 6 Glc, 1 GalA M+H
2,443 3OH C14, 3OH C16, C18:1, C14 2 GlcN, 6 Glc, 1 GalA M+H
WH8102 LPS 2,429 3OH C14, 3OH C16, C14, C18 2 GlcN, 5 Glc, 1 GalA, 1 Rha M+H
2,415 3OH C14, 3OH C15, C14, C18 2 GlcN, 5 Glc, 1 GalA, 1 Rha M+H
2,401 3OH C14, 3OH C16, C14, C16 2 GlcN, 5 Glc, 1 GalA, 1 Rha M+H
2,387 3OH C14, 3OH C15, C14, C16 2 GlcN, 5 Glc, 1 GalA, 1 Rha M+H
a

For the sake of brevity, only one potential set of fatty acids is shown per ion.

b

For LPS ions, the lowest-mass ion in each cluster is listed to be consistent with nominal mass predictions.