Description
Sinefungin (58944-73-3) is a nucleoside S-adenosyl-1-methionine analog. Potent, competitive methyltransferase (protein, DNA, and RNA methyltransferases) inhibitor.1,2?IC50?< 1.0 and 2.5 μM for PRMT1 and SET7/9, respectively.3?Sinefungin binds with greater affinity to the adenine-specific DNA methyltransferase M.TaqI than S-adenosyl-L-homocysteine.4?Inhibits biofilm formation by?Streptococcus pneumoniae.5
Uses
Sinefungin, a polar nucleoside antifungal active with broad biological activity, was isolated from a number of species of Streptomyces in the early 1970s. Sinefungin acts by inhibiting a wide range of methyltransferases, including the methylation of bases in DNA and RNA which alters cytosine deamination and gene expression. Sinefungin is widely used as a bioprobe to block methyltransferase-dependent pathways.
Definition
ChEBI: An adenosine that is the the delta-(5'-adenosyl) derivative of ornithine.
General Description
Chemical structure: nucleoside
Biological Activity
Strong competitive inhibitor of methyltransferases which uses S-adenosyl-1-methionine as the methyl group donor to yield methylated products such as 5-methylcytosine or N6-methyl adenosine on DNA and RNA. In addition, sinefungin is involved in a number of physiological processes.
Biochem/physiol Actions
Probable transcription factor. Plays a critical role in the control of immune response.
References
1) Barbes?et al. (1990),?Effects of sinefungin and S-adenosylhomocysteine on DNA and protein methyltransferases from Streptomyces and other bacteria;? FEMS Microbiol. Lett.,?57?239
2) Yebra?et al. (1991),?The effect of sinefungin and synthetic analogues on RNA and DNA methyltransferases from Streptomyces;? J. Antibiot. (Tokyo),?44?1141
3) Cheng?et al. (2004),?Small molecule regulators of protein arginine methyltransferases;? J. Biol. Chem.,?279?23892
4) Schluckebier?et al. (1997), Differential binding of S-adenosylmethionine S-adenosylhomocysteine and Sinefungin to adenine-specific DNA methyltransferase M. TaqI;? J. Mol. Biol., 265?56
5) Yadav?et al. (2014),?Sinefungin, a natural nucleoside analogue of S-adenosylmethionine, inhibits Streptococcus pneumonia biofilm growth;? Biomed. Res. Int.,?2014?156987
