A hydroxamic acid from Aspergillus nidulans with antibiotic activity against Proteus species.

Abstract
An Fe-complexing antibiotic with a narrow spectrum of biological activity was produced by several strains of A. nidulans when grown in a low-Fe, chemically defined medium. Its chemical and biological properties closely resembled those of deferritriacetylfusigen, a metabolite of several other aspergilli and penicillia.

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