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Old 12-21-2011, 02:00 AM   #1
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Default PubMed: Simultaneous Single-Molecule Detection of Endogenous C-5 DNA Methylation and

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Simultaneous Single-Molecule Detection of Endogenous C-5 DNA Methylation and Chromatin Accessibility Using MAPit.

Methods Mol Biol. 2012;833:125-41

Authors: Darst RP, Pardo CE, Pondugula S, Gangaraju VK, Nabilsi NH, Bartholomew B, Kladde MP

Abstract
Bisulfite genomic sequencing provides a single-molecule view of cytosine methylation states. After deamination, each cloned molecule contains a record of methylation within its sequence. The full power of this technique is harnessed by treating nuclei with an exogenous DNMT prior to DNA extraction. This exogenous methylation marks regions of accessibility and footprints nucleosomes, as well as other DNA-binding proteins. Thus, each cloned molecule records not only the endogenous methylation present (at CG sites, in mammals), but also the exogenous (GC, when using the Chlorella virus protein M.CviPI). We term this technique MAPit, methylation accessibility protocol for individual templates.


PMID: 22183592 [PubMed - in process]



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