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.