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Refining the transcriptional maps of Pseudomonas aeruginosa phages using ONT-cappable-seq

ABSTRACT: Refining the transcriptional maps of Pseudomonas aeruginosa phages using ONT-cappable-seq

PROVIDER: PRJNA967321 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR24442200_1.fastq.gz	Fastqsanger.gz
	SRR24442201_1.fastq.gz	Fastqsanger.gz
	SRR24442202_1.fastq.gz	Fastqsanger.gz
	SRR24442203_1.fastq.gz	Fastqsanger.gz
	SRR24442204_1.fastq.gz	Fastqsanger.gz

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Refining the transcriptional maps of Pseudomonas aeruginosa phages using ONT-cappable-seq

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Development of ONT-cappable-seq to unravel the transcriptional landscape of Pseudomonas phages

Project description:We developed ONT-cappable-seq, a specialized long-read RNA sequencing technique that allows end-to-end sequencing of primary prokaryotic transcripts using the Nanopore sequencing platform. We applied ONT-cappable-seq to study the transcriptional landscape of Pseudomonas aeruginosa phage LUZ7, leading to a comprehensive genome-wide map of viral transcription start sites, terminators and complex operon structures that fine-regulate gene expression. At the same time, it provides new insights in the RNA biology of LUZ7 and paves the way for more in depth transcription studies that can help unveil the complex layers of phage-host interactions.

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Project description:The global transcriptional profile of novel T7-like Pseudomonas aeruginosa phage LUZ100 was obtained using the long read RNA sequencing technique ONT-cappable-seq. Using this approach we obtained a comprehensive genome-wide map of viral transcription start sites, terminators and transcription units and gained new insights in the molecular mechanisms of transcriptional regulation of T7-like temperate phages.

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Development of ONT-cappable-seq to unravel the transcriptional landscape of <i>Pseudomonas</i> phages.

Project description:RNA sequencing has become the method of choice to study the transcriptional landscape of phage-infected bacteria. However, short-read RNA sequencing approaches generally fail to capture the primary 5' and 3' boundaries of transcripts, confounding the discovery of key transcription initiation and termination events as well as operon architectures. Yet, the elucidation of these elements is crucial for the understanding of the strategy of transcription regulation during the infection process, which is currently lacking beyond a handful of model phages. We developed ONT-cappable-seq, a specialized long-read RNA sequencing technique that allows end-to-end sequencing of primary prokaryotic transcripts using the Nanopore sequencing platform. We applied ONT-cappable-seq to study transcription of Pseudomonas aeruginosa phage LUZ7, obtaining a comprehensive genome-wide map of viral transcription start sites, terminators, and complex operon structures that fine-regulate gene expression. Our work provides new insights in the RNA biology of a non-model phage, unveiling distinct promoter architectures, putative small non-coding viral RNAs, and the prominent regulatory role of terminators during infection. The robust workflow presented here offers a framework to obtain a global, yet fine-grained view of phage transcription and paves the way for standardized, in-depth transcription studies for microbial viruses or bacteria in general.

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