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SRX373119: GSM1258061: WT_180min_rep1; Escherichia coli K-12; RNA-Seq
1 ABI_SOLID (AB SOLiD 4 System) run: 16.6M spots, 1.2G bases, 1,020Mb downloads

Submitted by: Gene Expression Omnibus (GEO)
Study: Unexpected complexity of the Escherichia coli K-12 transcriptome architecture revealed by single nucleotide resolution RNA sequencing
show Abstracthide Abstract
To investigate the architecture of the E. coli K-12 transcriptome, we used two RNA-Seq technologies to analyze strand-specific transcription at single-nucleotide resolution. We analyzed the data by using an organizational schema to annotate the promoters and terminators that define transcription units across the genome. Our results showed that most (ca. two-thirds) operons have a single promoter and terminator, whereas one-third of operons contain multiple transcription units. We found substantial evidence for differential gene expression within complex operons, which we categorized based on operon architecture. Overall design: E. coli K-12 strain MG1655 substrain BW38028 and isogenic rpoS mutant were cultured in minimal glucose media and the total transcriptome of log and stationary phase samples was sequenced.
Sample: WT_180min_rep1
SAMN02391516 • SRS498559 • All experiments • All runs
Library:
Instrument: AB SOLiD 4 System
Strategy: RNA-Seq
Source: TRANSCRIPTOMIC
Selection: cDNA
Layout: PAIRED
Construction protocol: All samples were extracted using the Qiagen Rnasey Mini Kit, following standard protocol cDNA libraries were constructed at Purdue using an adapted SOLiD Total RNA-Seq Kit. Total RNA (DNase I digested) was fragmented by RNase III. RNA samples labeled as TEX were also subsequently digested with Terminator Exonuclease (TEX). Pyrophosphate groups were removed from the 5′ terminus using tobacco acid pyrophosphatase (TAP), and an RNA adapter was ligated to the 5′ end of the RNA. First-strand synthesis was performed using standard SOLiD 4 Total RNA-Seq protocol. RNA-seq via SOLiD 4 sequencing of libraries prepared by ligation based chemistry to provide strand-specific datasets.
Experiment attributes:
GEO Accession: GSM1258061
Links:
External link:
Runs: 1 run, 16.6M spots, 1.2G bases, 1,020Mb
Run# of Spots# of BasesSizePublished
SRR102402916,623,2241.2G1,020Mb2014-07-08

ID:
533332

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