Methyl donor; cofactor for enzyme-catalyzed methylations, including catechol O-methyltransferase (COMT) and DNA methyltransferases (DNMT). Although present in all cells, it is concentrated in liver where 85% of all methylation reactions occur. It is also
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参考文献
• Lu, S., et al.: Int. J. Biochem. Cell Biol., 32, 391 (1989)