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ENVIRONMENTAL TOXICOLOGY TOOLS & SERVICESN,O-Diacetyltyramine is a fungal metabolite that has been found in P. endophytica and has diverse biological activities.1 It is active against a panel of 13 bacteria (MICs = 8-128 µg/ml), as well as a panel of nine fungi (MICs = 64-256 µg/ml). N,O-Diacetyltyramine is cytotoxic to MDA-MB-231, HeLa, MCF-7, and OAW42 cancer cells when used at concentrations ranging from 10 to 5,000 nM. It is larvicidal against A. aegypti, A. albimanus, and C. quinquefasciatus mosquitos (LC50s = 724.8, 403.1, and 506.7 ppm, respectively).2
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1. Bioactive metabolites produced by pseudonocardia endophytica VUK-
2. Larvicidal activity of single and macrocyclic tyrosine derivatives against three important vector mosquitoes. Res. Chem. Intermed. 41(8), 5283–5292 (2014).