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Updated: Aug 15, 2026

Antimicrobial Peptides Produced by Selective Pressure Incorporation of Non-canonical Amino Acids
Published on: May 4, 2018
Novel and expanded jadomycins incorporating non-proteogenic amino acids
David L Jakeman1, Cathy L Graham, Taryn R Reid
1College of Pharmacy, Dalhousie University, 5968 College Street, Halifax, B3H 3J5, NS, Canada. david.jakeman@dal.ca
Abstract:
Jadomycin B is a secondary metabolite produced, in response to stress, by Streptomyces venezuelae ISP5230 grown in nutrient-deprived media. We present definitive electrospray ionization mass spectrometry data identifying a series of novel jadomycins with non-proteogenic amino acids incorporated into the oxazolone ring of the secondary metabolite, and strengthening evidence for the existence of an aldimine intermediate in the biosynthetic pathway. We also demonstrate that the size of the oxazolone ring can be expanded by incorporating beta-amino acids.
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