FIGURE 2. Analysis of antimicrobial quinolines from P. aeruginosa MVs using LC–MS and CID.
From the following article:
Membrane vesicles traffic signals and facilitate group activities in a prokaryote
Lauren M. Mashburn and Marvin Whiteley
Nature 437, 422-425 (15 September 2005)
doi:10.1038/nature03925
Shown is an ion chromatogram for quinolines within MVs, which present a major fragment ion at m/z 172. Listed on the elution profile are two quinolines, namely 4-hydroxy-2-heptylquinoline (HHQ) and 4-hydroxy-2-nonylquinoline (HNQ), and their elution times. [M + H]+ ions for HHQ and HNQ had relative masses of 244 and 272, respectively.
