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  • Title: Genomic distribution and possible functions of DNA hydroxymethylation in the brain.
    Author: Wen L, Tang F.
    Journal: Genomics; 2014 Nov; 104(5):341-6. PubMed ID: 25205307.
    Abstract:
    DNA methylation (5-methylcytosine, 5mC) is involved in many cellular processes and emerges as an important epigenetic player in brain development and memory formation. The recent discovery that 5mC can be oxidized to 5-hydroxymethylcytosine (5hmC) by TET (Ten-Eleven-Translocation) proteins provides novel insights into the dynamic character of 5mC in the brain. The content of 5hmC is remarkably high in the brain, adding further complexity. In this review, we discuss how recent advances have improved our understanding of the possible biological roles of 5hmC and TET proteins in the brain. These advances attribute to various approaches, including the genome-wide approach to map 5hmC in different genomic contexts, the gene knockout/knockdown approach to elucidate the functions of TET proteins and 5hmC, and the biochemical approach to uncover potential 5hmC readers.
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