Pseudoalteropeptide A, a novel lipopeptide from the marine bacterium Pseudoalteromonas piscicida SWA4_PA4 isolated from marine seaweed.

A new lipopeptide, pseudoalteropeptide A (1) was isolated from the marine bacterium Pseudoalteromonas piscicida SWA4_PA4. The structure was elucidated by spectroscopic analyses including NMR and MSMS spectra. It showed moderate iron chelating activity as well as cytotoxic activity against Jurkat human T lymphocyte cells. isolation/marine bacterium/natural product/structure elucidation.