Grisorixin, an ionophorous antibiotic of the nigericin group. I. Fermentation, isolation, biological properties and structure.

Abstract
Grisorixin is an ionophorous antibiotic of the nigericin group isolated from cultures of a strain of Streptomyces griseus. It shows activity against Gram-positive bacteria and fungi but is also very toxic. The isolation and purification procedures are reported. Its structure and physico-chemical properties are also described.

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