Relationship between nucleosome positioning and DNA methylation: ChIP-chip

ABSTRACT: Nucleosomes compact and regulate access to DNA in the nucleus, and are composed of approximately 147 bases of DNA wrapped around a histone octamer1, 2. Here we report a genome-wide nucleosome positioning analysis of Arabidopsis thaliana utilizing massively parallel sequencing of mononucleosomes. By combining this data with profiles of DNA methylation at single base resolution, we identified ten base periodicities in the DNA methylation status of nucleosome-bound DNA and found that nucleosomal DNA was more highly methylated than flanking DNA. These results suggest that nucleosome positioning strongly influences DNA methylation patterning throughout the genome and that DNA methyltransferases preferentially target nucleosome-bound DNA. We also observed similar trends in human nucleosomal D

ORGANISM(S): Arabidopsis thaliana

SUBMITTER: matteo Pellegrini 

PROVIDER: E-GEOD-21818 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress