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  • Title: Effect of exogenous nucleotides on the candicidin fermentation.
    Author: Martin JF, Demain AL.
    Journal: Can J Microbiol; 1977 Oct; 23(10):1334-9. PubMed ID: 200324.
    Abstract:
    Addition of cyclic-AMP (c-AMP) to Streptomyces griseus fermentations inhibited candicidin formation. In a phosphate-free resting cell system, c-AMP inhibited net candicidin formation and incorporation of labeled propionate and p-aminobenzoic acid into the antibiotic but did not inhibit protein synthesis. All nucleotides tested, regardless of the position of the phosphate ester, were effective inhibitors; nucleosides and free bases were not. Inhibition occurred whether the nucleotide was added early or late. The results indicate that inhibition of antibiotic formation by exogenous nucleotides, including cyclic nucleotides, is similar to the effect produced by inorganic phosphate.
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