Burkholdines 1097 and 1229, Potent Antifungal Peptides from <i>Burkholderia ambifaria</i> 2.2N

Kamilia A. Tawfik, Peter W. Jeffs, Brian L. Bray, George R. Dubay, Joseph O. Falkinham, Mostafa K. Mesbah, Diaa T. A. Youssef, Sherief Khalifa, Eric W. Schmidt

Organic Letters · 2010 · 72 citations · 8 references

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Abstract

Potent antifungal cyclic lipopeptides, burkholdines (Bk), were isolated from a culture of Burkholderia ambifaria 2.2N. Bk-1229 (1) and Bk-1097 (2) are octapeptides comprised of nonproteinogenic amino acids, including beta-hydroxytyrosine, beta-hydroxyasparagine, and a new fatty acyl amino acid. 1 and 2 are fungicidal against a panel of fungi with potencies 2-60-fold better than amphotericin B control.

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