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Time series data of chromatin and transcription throughout the cell cycle

ABSTRACT: Time series data of chromatin and transcription throughout the cell cycle

PROVIDER: PRJNA713547 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR13933500.fastq.gz	Fastqsanger.gz
	SRR13933501.fastq.gz	Fastqsanger.gz
	SRR13933502.fastq.gz	Fastqsanger.gz
	SRR13933503.fastq.gz	Fastqsanger.gz
	SRR13933504.fastq.gz	Fastqsanger.gz

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Time series data of chromatin and transcription throughout the cell cycle

Project description:The occupancy states of DNA-binding nucleosomes and subnucleosome-sized proteins (e.g. transcription factors, replication proteins, etc.) determine the chromatin accessibility landscape and provide additional regulatory context for DNA-templated processes including transcription and DNA replication. Throughout the mitotic cell division cycles, the transcriptome undergoes periodic reprogramming along with replication- and mitosis-induced global chromatin reconfiguration; however, profiling of the cell cycle-specific chromatin dynamics and understandings of its regulatory mechanisms remain limited. Here we employed high-resolution MNase-seq to factor-agnostically map the genome-wide chromatin occupancy with synchronized Saccharomyces cerevisiae cell populations, in parallel with transcriptome profiling by RNA-seq. Throughout the cell cycles, the occupancy of gene-body nucleosomes and promoter subnucleosomes (presumably TFs and polymerase) exhibit both transcription- dependent and independent periodicity, suggesting a decoupling between transcription and chromatin occupancy dynamics. The “phased” positioning of nucleosomes within gene bodies, however, is pervasively disorganized by replication fork progression, and also regulated by the intensity and cell cycle phase of transcriptional activation. Finally, we profiled the chromatin organization around replication origins throughout the complete cell cycle and revealed the chromatin context for origin efficiency.

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