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. 2020 Aug 27;18(9):446. doi: 10.3390/md18090446

Figure 4.

Figure 4

Chemical structure and enhanced product ion mass spectrum of aeruginosamide AEG625 Pre+Tyr+Val+Pro+Pyr+TzlCOOH identified based on the following fragment ions: 626 [M+H], 558 [M+H–Pre], 296 [Pro+Pyr+TzlCOOH+H], 263 [Tyr+Val+H], 332 [Tyr+Val+Pro+H–CO], 235 [Tyr+Val+H–CO], 199 [Pyr+TzlCOOH+H], 130 [TzlCOOH], 136 Tyr immonum ion, 112 TzlCO, 70 Pro immonium ion.