Xenortide

The xenortides (A-D) are a class of linear peptides isolated from the bacterium Xenorhabdus nematophila, a symbiont of the entomopathogenic nematode Steinernema carpocapsae. This class of compounds is known for their insect virulence and cytotoxic biological activities. The tryptamide containing compounds show higher biological activity than the phenylethylamides. The most biologically active compound was found to be xenortide B with a potency of less than 1.6 μM activity against Trypanosoma brucei rhodesiense and Plasmodium falciparum (malaria), however it is also the most toxic to mammalian cells which limits its viability as a treatment.

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