Simaomicin (LL-D42067), a novel antibiotic from actinomadura madurae. I. Taxonomy, fermentation and biological activity.

Abstract
A new antibacterial antibiotic, designated simaomicin .alpha. (LL-D42067.alpha.) was isolated from the fermentation broth of an actinomycete strain. Based on cultural, physiological, morphological and chemical characteristics, culture LL-D42067 was identified as a new subspecies of Actinomadura madurae. Simaomicin .alpha. demonstrated potent activity against Gram-positive bacteria and was active in vivo against a variety of Eimeria species causing coccidiosis in chickens.