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LC-MS chromatogram RT 2–6 min out of an overall 9 min gradient run of extracts of S. albus Del14/011-12p1-49 and S. lividans TK24/011-12p1-49 strains carrying the alp-gene cluster construct. The strains were cultivated in NL19 media and compounds were extracted from the biomass. Peaks that correspond to alpiniamides are highlighted. Alpiniamide A-B (m/z 326 [M-H2O+H]+) and alpiniamide C (m/z 308 [M-H2O+H]+).
