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TranscriptomicsRNase G complementation of rne null mutation identifies functional interrelationships with RNase E
The Escherichia coli endoribonucleases RNase E (Rne) and RNase G (Rng) have sequence similarity and broadly similar sequence specificity. Whereas the absence of Rne normally is lethal, we show here that E. coli bacteria that lack the rne gene can be made viable by overexpression of Rng. Rng-compleme...
ORGANISM(S): Escherichia coli 
2005-08-13 | E-GEOD-3123 | biostudies-arrayexpress
TranscriptomicsIdentification of RNAs that are physically and functionally associated with RNase P
Numerous RNAs copurify with RNase P and are affected by temperture sensitive mutations in conserved residues with the essential RNA and protein subunits. Specifically, RNase P physically interacts with ribosomal protein mRNAS and the intron-encoded box C/D snoRNAs. Keywords: RNA copurification, tem...
ORGANISM(S): Saccharomyces cerevisiae 
2008-06-01 | E-GEOD-10514 | biostudies-arrayexpress
GenomicsGenome-wide distribution of RNA-DNA hybrids identifies RNase H targets in tRNA genes, retrotransposons and mitochondria
During transcription the nascent RNA can invade the DNA template, forming extended RNA-DNA duplexes (R-loops). Here we employ ChIP-seq in strains expressing or lacking RNase H to map targets of RNase H activity throughout budding yeast genome. In wild-type strains, R-loops were readily detected over...
ORGANISM(S): Saccharomyces cerevisiae 
2014-11-03 | E-GEOD-53420 | biostudies-arrayexpress
TranscriptomicsTranscription profiling of E. coli mutants lacking the rne gene and over expressing Rng
The Escherichia coli endoribonucleases RNase E (Rne) and RNase G (Rng) have sequence similarity and broadly similar sequence specificity. Whereas the absence of Rne normally is lethal, we show here that E. coli bacteria that lack the rne gene can be made viable by overexpression of Rng. Rng-compleme...
ORGANISM(S): Escherichia coli 
2005-07-11 | E-SMDB-1515 | biostudies-arrayexpress
TranscriptomicsGene expression profiling of constitutively competent comR and proQ mutants and RNase R (rnr) mutant of L. pneumophila
Bacterial competence is a genetically programmed process that is triggered as a response to environmental stimuli. DNA uptake from the extracellular milieu by competence requires the expression of a complex machinery composed of a competence pseudopilus and a DNA translocase. In L. pneumophila, it ...
ORGANISM(S): Legionella pneumophila 
2010-05-20 | E-GEOD-12796 | biostudies-arrayexpress
TranscriptomicsIntroducing synthetic thermostable RNase inhibitors in single-cell RNA-seq
Single-cell RNA-sequencing (scRNAseq) is revolutionizing biomedicine, propelled by advances in methodology, ease of use, and cost reduction of library preparation. Over the past decade, there have been remarkable technical improvements in most aspects of single-cell transcriptomics. Yet, there has b...
ORGANISM(S): Mus musculus 
2024-07-29 | E-MTAB-13873 | biostudies-arrayexpress
TranscriptomicsAccumulation of noncoding RNA due to an RNase P defect in Saccharomyces cerevisiae
To investigate the possible range of additional RNase P substrates in vivo a strand-specific, high-density microarray was used to analyze what RNA accumulates with a mutation in the catalytic RNA subunit of nuclear RNase P in Saccharomyces cerevisiae. A wide variety of noncoding RNAs were shown to a...
ORGANISM(S): Saccharomyces cerevisiae 
2011-08-29 | E-MEXP-3140 | biostudies-arrayexpress
TranscriptomicsAn essential role for the antiviral endoribonuclease, RNase-L, in antibacterial immunity.
Type I interferons were discovered as the primary antiviral cytokines and are now known to serve critical functions in host defense against bacterial pathogens. Accordingly, established mediators of interferon antiviral activity may mediate previously unrecognized antibacterial functions. RNase-L is...
ORGANISM(S): Mus musculus 
2008-12-19 | E-GEOD-13530 | biostudies-arrayexpress
TranscriptomicsRibonuclease L and Metal-Ion-Independent Endoribonuclease Cleavage Sites in Host and Viral RNAs
We used 2', 3'-cyclic phosphate cDNA synthesis and Illumina sequencing to identify and quantify metal-ion-independent endoribonuclease cleavage sites in host and viral RNAs. To make cDNA libraries, we exploited the 2’, 3’-cyclic phosphate at the end of RNA fragments produced by RNase L and other met...
ORGANISM(S): Homo sapiens 
2014-02-07 | E-GEOD-52489 | biostudies-arrayexpress
TranscriptomicsRraA. a protein inhibitor of RNase E activity that globally modulates RNA abundance in E. coli
This SuperSeries is composed of the following subset Series: GSE3869: Effects of rraA deletion on transcription GSE3870: Effects of rraA overexpression on transcription Abstract: Ribonuclease E (RNase E) has a key role in mRNA degradation and the processing of catalytic and structural RNAs in E. co...
ORGANISM(S): Escherichia coli 
2006-03-07 | E-GEOD-4383 | biostudies-arrayexpress
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