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. 2016 Nov 18;11(11):e0167002. doi: 10.1371/journal.pone.0167002

Fig 2. Identification of the produced AHLs using LC-MS/MS.

Fig 2

Extracted ion chromatograms (LC-MS/MS, precursor ion scan, positive ionization mode) of [M+H]+ ions of AHLs present in (A) P. aurantiaca PB-St2 crude extract after 22 h cultivation, (B) E. coli XL1-Blue/pBluescript SK(-)ΔlacZ crude extract, and extracts of E. coli XL1-Blue expressing (C) phzI, (D) csaI, (E) aurI, and (F) hdtS. C4-HSL (black, m/z 172–173), 3-OH-C6-HSL (red, m/z 216–217), 3-oxo-C6-HSL (blue, m/z 214–215), C6-HSL (pink, m/z 200–201), 3-OH-C8-HSL (green, m/z 244–245), 3-oxo-C8-HSL (cyan, m/z 242–243), 3-OH-C10-HSL (orange, m/z 272–273), C8-HSL (purple, m/z 228–229).