X-14547A, a new ionophorous antibiotic produced by Streptomyces antibioticus NRRL 8167. Discovery, fermentation, biological properties and taxonomy of the producing culture.

Abstract

X-14547A is a novel antibiotic produced by a new strain of Streptomyces antibioticus (NRRL 8167). The antibiotic is active in vitro against Gram-positive bacteria and is capable of complexing and transporting divalent as well as monovalent metal cations.