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LC-ESMS analysis of minimal whiE PKS polyketides from YU105/pIJ4293. HPLC was monitored at 280 nm. Ion chromatograms for the pseudomolecular ion MH+ of hepta-, undeca-, and dodecaketides are displayed. Note that several of the 451 ions are fragments from MH+ 469 resulting from the loss of H2O and are indicated with an asterisk.
