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  • Title: Effects of sinefungin and S-adenosylhomocysteine on DNA and protein methyltransferases from Streptomyces and other bacteria.
    Author: Barbés C, Sánchez J, Yebra MJ, Robert-Geró M, Hardisson C.
    Journal: FEMS Microbiol Lett; 1990 Jun 01; 57(3):239-43. PubMed ID: 2210336.
    Abstract:
    Sinefungin is a naturally occurring nucleoside isolated from cultures of Streptomyces griseolus and S. incarnatus. It is structurally related to S-adenosyl-methionine (SAM) and S-adenosyl-L-homocysteine (SAH). Its effect and level of action on prokaryotes has not been studied with the same detail as with eukaryotic cells. In this report we describe the effect of sinefungin and SAH on several Streptomyces methyltransferases (DNA and protein MTases) and on other bacterial DNA-MTases. Protein MTases are resistant to sinefungin, whereas DNA-MTases are inhibited. Adenine MTases however, seem more sensitive to this analogue than cytosine MTases.
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