Journal of Microbiology and Biotechnology

The Korean Society for Microbiology and Biotechnology (한국미생물·생명공학회)
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Cystocin, a Novel Antibiotic, Produced by Streptomyces sp. GCA0001: Production and Characterization of Cystocin

  • Published : 2003.08.01
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Abstract

3'-[S-Methyl-cysteinyl]-3'-amino-3'-deoxy-N,N- dimethyl adenosine, cystocin, is a biosynthesized antibiotic material newly identified from Streptomyces sp. GCA0001. Its structure was found to be similar to puromycin, where the terminal tyrosine is replaced by a methyl cysteine. NMR data prove that the 3-ammo ribose is connected to dimethylaminopurine through the anomeric carbon at 1'-carbon. The methyl cysteinyl unit is connected to the amino unit of ribose by peptide bond. The verification of the structure was performed by comparing the puromycin nucleosides resulted from the hydrolysis of cystocin and puromycin, respectively. Antibiotic activity of cystocin against Streptococcus was found to be two times more potent than that of puromycin.

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