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Arabidopsis thaliana strain:T87

ABSTRACT: Genome-wide analysis of transcription start sites and mRNA translation state in Arabidopsis cells

PROVIDER: PRJDB3455 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	DRR029684.fastq.gz	Fastqsanger.gz
	DRR029685.fastq.gz	Fastqsanger.gz
	DRR029686.fastq.gz	Fastqsanger.gz
	DRR029687.fastq.gz	Fastqsanger.gz
	DRR029688.fastq.gz	Fastqsanger.gz

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Project description:Using acRIP-seq, we present transcriptome-wide atlases of ac4C in Arabidopsis thaliana and Oryza sativa. Analysis of ac4C distribution reveals ac4C is enriched near translation start sites in rice while near translation start sites and end sites in Arabidopsis. Further analysis shows ac4C contributes to RNA stability, splicing and translation. We then performed NaCNBH3 treatment and RNA-seq to measure C to T mutation and RNC-seq to measure translation efficiency in Arabidopsis.

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Project description:We investigated genome-wide changes in mRNA translation in Arabidopsis thaliana T87 suspension cell cultures which thought to be one of the host materials for bioreactor. Global translational repression was observed in cells of 8 day after inoculation that is thought to be stressful condition by the nutrient deficiency and hypoxia. This suggested the negative effect of the global translational repression on transgene expression. On the other hand, previous study using heat stress showed that some mRNAs were actively translated under such stressful condition, suggesting the existence of mRNA that were actively translated in cells of 8 day after inoculations. To identify mRNAs that escape global translational repression on 8 day and its cis-elements would be the 1st step to make the system for higher transgene expression by the escaping global translational repression. To this end, we subjected polysomal RNA and non-polysomal RNA from sucrose gradient fractionated cell lysates to the co-hybridization on Agilent Arabidopsis 4 Oligo Microarrays. The ratio of signal intensities (polysomal RNA: total RNA) was used as an indicator of the translation state for each transcript.

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