Studies on a new aminoglycoside antibiotic, dactimicin. I. Producing organism and fermentation.

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Abstract
The producing organism of a new antibiotic, dactimicin, is described. The presence of finger-shaped sporangia bearing motile spores, the absence of aerial mycelium and its cell wall of type II ascribe this organism to the genus Dactylosporangium. The cultural and physiological features distinguish this organism from all the described Dactylosporangium spp. It is considered to be a new species for which the name D. matsuzakiense sp. nov. is proposed. Fermentation of dactimicin is also described.