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MS2-affinity purification coupled with RNA sequencing (MAPS) reveals GcvB sRNA targetome.

ABSTRACT: Recently, we developed an in vivo technology to draw the interacting map of a specific small regulatory RNA (sRNA). We called it MAPS for MS2-affinity purification coupled with RNA sequencing. Using this technology, we already revealed the targetome of RyhB, RybB and DsrA, three well-characterized sRNAs in Escherichia coli. In this study, we perform MAPS with GcvB, a sRNA involved in amino acid metabolism.

ORGANISM(S): Escherichia coli K-12

PROVIDER: GSE80019 | GEO | 2018/12/06

REPOSITORIES: GEO

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MS2-affinity purification coupled with RNA sequencing (MAPS) reveals RprA sRNA targetome.

Project description:Recently, we developed an in vivo technology to draw the interacting map of a specific small regulatory RNA (sRNA). We called it MAPS for MS2-affinity purification coupled with RNA sequencing. Using this technology, we already revealed the targetome of RyhB, RybB and DsrA, three well-characterized sRNAs in Escherichia coli. In this study, we perform MAPS with RprA sRNA.

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MS2-affinity purification coupled with RNA sequencing (MAPS) reveals RybB sRNA targetome

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2015-04-16 | E-GEOD-66518 | biostudies-arrayexpress

MS2-affinity purification coupled with RNA sequencing (MAPS) reveals RyhB sRNA targetome

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MS2-affinity purification coupled with RNA sequencing (MAPS) reveals RybB sRNA targetome

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MS2-affinity purification coupled with RNA sequencing (MAPS) reveals RyhB sRNA targetome

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MS2-affinity purification coupled with RNA sequencing (MAPS) reveals SraL sRNA targetome in Salmonella Typhimurium

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Identification of sRNA binding to ITSmetZW and ITSmetWV using MS2-affinity purification coupled with RNA sequencing (MAPS) technology

Project description:During ribosomal and transfer RNA maturation, external transcribed spacer (ETS) and internal transcribed spacer (ITS) sequences are excised and, as non-functional by-products, are rapidly degraded. The 3’ETS of the glyW-cysT-leuZ polycistronic tRNA precursor was highly and specifically enriched by co-purification with at least two different small regulatory RNAs (sRNAs), RyhB and RybB. Both sRNAs were shown to base pair with the same region in the 3’ETS of leuZ (3’ETSleuZ). Disrupting the pairing by mutating 3’ETSleuZ significantly increased the activity of sRNAs, even under non-inducing conditions. Our results indicate that 3’ETSleuZ prevents sRNA-dependent remodeling of tricarboxylic acid (TCA) cycle fluxes and increases antibiotic sensitivity when sRNAs are transcriptionally repressed. This suggests that 3’ETSleuZ functions as a sponge to absorb transcriptional noise from repressed sRNAs. Finally, the fact that RybB and MicF sRNAs are co-purified with ITSmetZ-metW and ITSmetW-metV strongly suggests a much broader phenomenon. Identification of sRNAs co-purified with MS2-ITSmetZW and MS2-ITSmetWV. ITSmetZW and ITSmetWV (without MS2) were used as control

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RyhB-mRNA pairing in absence of the RNA chaperone Hfq in vivo

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2021-09-22 | GSE113591 | GEO

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