Title |
A screen for hydroxymethylcytosine and formylcytosine binding proteins suggests functions in transcription and chromatin regulation
|
---|---|
Published in |
Genome Biology, January 2013
|
DOI | 10.1186/gb-2013-14-10-r119 |
Pubmed ID | |
Authors |
Mario Iurlaro, Gabriella Ficz, David Oxley, Eun-Ang Raiber, Martin Bachman, Michael J Booth, Simon Andrews, Shankar Balasubramanian, Wolf Reik |
Abstract |
DNA methylation (5mC) plays important roles in epigenetic regulation of genome function. Recently, TET hydroxylases have been found to oxidise 5mC to hydroxymethylcytosine (5hmC), formylcytosine (5fC) and carboxylcytosine (5caC) in DNA. These derivatives have a role in demethylation of DNA but in addition may have epigenetic signaling functions in their own right. A recent study identified proteins which showed preferential binding to 5-methylcytosine (5mC) and its oxidised forms, where readers for 5mC and 5hmC showed little overlap, and proteins bound to further oxidation forms were enriched for repair proteins and transcription regulators. We extend this study by using promoter sequences as baits and compare protein binding patterns to unmodified or modified cytosine using DNA from mouse embryonic stem cell extracts. |
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