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Genome-wide H3K4me3 analysis in Arabidopsis

ABSTRACT: Genome-wide H3K4me3 analysis in Arabidopsis

PROVIDER: PRJNA767683 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR16134568_1.fastq.gz	Fastqsanger.gz
	SRR16134568_2.fastq.gz	Fastqsanger.gz
	SRR16134569_1.fastq.gz	Fastqsanger.gz
	SRR16134569_2.fastq.gz	Fastqsanger.gz
	SRR16134570_1.fastq.gz	Fastqsanger.gz

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Genome-wide H3K4me3 analysis in Arabidopsis

Project description:To explore the bivalent histone modifications in the Arabidopsis genome, we examined genome-wide histone 3 lysine-27 trimethylation (H3K27me3) and histone 3 lysine-4 trimethylation (H3K4me3) in 5-day-old seedlings (Col-0) by ChIP-seq. We found that more than 1300 genes loci contain both H3K27me3 and H3K4me3.

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Genome-wide H3K27me3 analysis in Arabidopsis

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Genome-wide Analysis of Mono-, Di- and Trimethylation of Histone H3 Lysine 4 in Arabidopsis thaliana

Project description:Background. Post-translational modifications of histones play important roles in regulating transcription by modulating the structural properties of the chromatin. In plants, methylation of histone H3 lysine4 (H3K4me) is associated with genes and required for normal plant development. Results. We have characterized the genome-wide distribution patterns of mono-, di- and trimethylation of H3K4 (H3K4me1, H3K4me2 and H3K4me3, respectively) in Arabidopsis thaliana using chromatin immunoprecipitation and high-resolution whole-genome tiling microarrays (ChIP-chip). All three types of H3K4me are found to be almost exclusively genic, and two thirds of Arabidopsis genes contain at least one type of H3K4me in seedlings. H3K4me2 and H3K4me3 accumulate predominantly in promoters and 5’ genic regions, whereas H3K4me1 is distributed within transcribed regions. In addition, H3K4me3-containing genes are highly expressed with low levels of tissue specificity, but H3K4me1 or H3K4me2 may not be directly involved in transcriptional activation. Furthermore, a genome-wide preferential co-localization of H3K4me3 and H3K27me3 found in mammals does not appear to exist in plants, but H3K4me2 and H3K27me3 co-localize at a higher-than-expected frequency. Finally, the relationship between H3K4me and DNA methylation was explored by comparing the genome-wide distribution patterns of H3K4me1, H3K4me2 and H3K4me3 in wild type plants and the met1 DNA methyltransferase mutant. Conclusions. H3K4me plays widespread roles in regulating gene expression in plants. Although many aspects of the mechanisms and functions of H3K4me appear to be conserved among all three kingdoms, we observed significant differences in the relationship between H3K4me and transcription or other epigenetic pathways in plants and mammals.

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