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. 2021 Oct 29;12:743126. doi: 10.3389/fmicb.2021.743126

TABLE 3.

Lipid composition of the ECM of planktonically- and biofilm-grown Mabs NJH12.

Structures Theoretical mass (m/z) Biofilm Planktonic Charge Observed mass (m/z) Mass accuracy (ppm)
DOPC
Inline graphic 		844.6073 + + [M+Hac-H]– 844.6095 2.58
Free fatty acids 253.2173 (C16:1) + + [M-H]– 253.2175 0.67
  Palmitoleic acid (C16:1), Palmitic acid (C16:0) 255.2329 (C16:0) + + [M-H]– 255.2322 –2.74
  Oleic acid (C18:1), Stearic acid (C18:0) 281.2486 (C18:1) + + [M-H]– 281.2471 –5.33
283.2642(C18:0) + + [M-H]– 283.2657 5.30
Free mycolic acids
Inline graphic 		913.9321 + nd [M-H]– 913.9374 5.76
927.9478 t – [M-H]– 927.9495 1.83
941.9634 + + [M-H]– 941.9632 –0.27
1080.1040 + – [M-H]– 1080.1071 2.86
1108.1354 + t [M-H]– 1108.1313 –3.65
1122.1511 + t [M-H]– 1122.1491 –1.76
1136.1668 + t [M-H]– 1136.1641 –2.34
1150.1825 + t [M-H]– 1150.1812 –1.08
1164.1982 t + [M-H]– 1164.1892 –7.68
Cardiolipins
Inline graphic 		1265.8543 (2R1 + 2R2 = 58:2) + + [M-H]+ 1265.8517 –2.01
1279.8699 (2R1 + 2R2 = 59:2) + + [M-H]+ 1279.8629 –5.46
1293.8856 (2R1 + 2R2 = 60:2) + + [M-H]+ 1293.8959 7.99
1307.9012 (2R1 + 2R2 = 61:2) + + [M-H]+ 1307.8983 –2.22
1321.9169 (2R1 + 2R2 = 62:2) + + [M-H]+ 1321.9147 –1.62
1335.9325 (2R1 + 2R2 = 63:2) + + [M-H]+ 1335.9302 –1.74
1349.9482 (2R1 + 2R2 = 64:2) + + [M-H]+ 1349.9412 –5.16
1363.9638 (2R1 + 2R2 = 65:2) + + [M-H]+ 1363.9522 –8.48
1377.9795 (2R1 + 2R2 = 66:2) + + [M-H]+ 1377.9729 –4.77
Glycopeptidolipids (GPLs)
Inline graphic 		1207.7939 + + [M-H]+ 1207.7970 2.58
1221.8096 + + [M-H]+ 1221.8110 1.19
1235.8253 + + [M-H]+ 1235.8347 7.66
1249.8410 + + [M-H]+ 1249.8458 3.86
1263.8567 + + [M-H]+ 1263.8620 4.18
1277.8724 + + [M-H]+ 1277.8756 2.51
1291.8881 + + [M-H]+ 1291.8879 –0.10
1305.9038 + – [M-H]+ 1305.9042 0.29
graphic file with name fmicb-12-743126-i005.jpg 1353.8518 + + [M-H]+ 1353.8574 4.16
1367.8677 + + [M-H]+ 1367.8632 –3.28
1381.8834 + + [M-H]+ 1381.8844 0.74
1395.8991 + + [M-H]+ 1395.9031 2.89
1409.9148 + + [M-H]+ 1409.9119 2.04
1423.9305 + + [M-H]+ 1423.9345 2.84
Ac2PIM2
Inline graphic 		1622.0835 t – [M-H]– 1622.0758 –2.75
1636.0992 t – [M-H]– 1636.1103 6.81
1648.0992 t – [M-H]– 1648.0992 0.01
1650.1148 t – [M-H]– 1650.1112 –2.19
1662.1148 t – [M-H]– 1662.1222 4.45

LC-MS analyses were run in both positive and negative modes and the m/z values of the main compounds identified are shown. Plus and minuses refer to the presence or absence of detectable amounts of lipid constituents. t denotes ions present at trace levels (counts < 100).