J Biol Chem. 2013 Jun 28;288(26):18987-99. doi: 10.1074/jbc.M113.472605. Epub 2013 May 15.
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Excessive S-adenosyl-L-methionine-dependent methylation increases levels of methanol, formaldehyde and formic acid in rat brain striatal homogenates: possible role in S-adenosyl-L-methionine-induced Parkinson's disease-like disorders.