Studies on novel bacterial translocase I inhibitors, A-500359s. V. Enhanced production of capuramycin and A-500359 A in Streptomyces griseus SANK 60196.
2006
Streptomyces griseus SANK 60196 produces the novel nucleoside antibiotics A-500359 A, C, D and capuramycin. Enhanced production of capuramycin and A-500359 A was achieved through a number of medium modifications and a series of single colony isolations. The addition of maltose instead of glucose as the carbon source in a primary medium resulted in a 20-fold increase in the productivity of capuramycin. Furthermore, the addition of cobalt chloride (CoCl 2 ) and yeast extract to the medium containing maltose drastically altered the production ratio of A-500359 A to capuramycin. Thus, the yield of A-500359 A increased up to 600 μg/ml in an optimal medium, while the yield in the primary medium was 1 μg/ml.
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