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  • Title: A new antitumor antibiotic, chounghwamycin A. I. Taxonomy, isolation and characterization.
    Author: Liu YT, Ho TI, Lee AR, Chen CF, Chen HY, Chen CJ.
    Journal: Proc Natl Sci Counc Repub China B; 1986 Apr; 10(2):98-104. PubMed ID: 2428073.
    Abstract:
    Chounghwamycin A, a new antitumor antibiotic produced by a strain of Streptomyces sp. No. PL-D-5, was isolated and characterized. It appeared to belong to the actinomycin group of antibiotics from physico-chemical studies and has an empirical formula of C63H88N11O21. The antibiotic is extractable into an organic solvent from the fermentation broth, possessing potent antileukemic activity against P388 mouse leukemia in mice and antimicrobial activity against Gram-positive bacteria with MIC values about 0.1-0.4 microgram/ml, but showed no activity on Gram-negative bacteria, yeast and fungi tested.
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