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Sample GSM2912991 Query DataSets for GSM2912991
Status Public on Apr 05, 2018
Title RelA + isoleucine starved rep1
Sample type SRA
 
Source name RelA + isoleucine starved bacterial cells
Organism Escherichia coli
Characteristics strain/background: MG1655relA::HTF
growth condition: isoleucine starved
antibody: M2-anti-FLAG
Treatment protocol Non-starved cultures were collected at OD600=0.2 and isoleucine starved cultures were collected after incubation with 500μg/mL L-Valine for 30 min (samples indicated by +val).
Growth protocol Bacterial cells were grown in MOPS (morpholinepropanesulfonic acid) minimal medium at 30C supplemented with 0.2% glucose and with all nucleobases (10 µg ml-1 of each).
Extracted molecule total RNA
Extraction protocol The cells were subsequently UV-C crosslinked and harvested by centrifugation, washed in ice-cold phosphate-buffered saline (PBS) and snap frozen in liquid nitrogen. The pellets were stored at -80C. The HTF tagged proteins were then purified, linkers ligated to crosslinked RNA, cDNA synthesized and DNA libraries generated as described in Winther et al. 2018.
Libraries were constructed as per Winther et al. 2018.
 
Library strategy RIP-Seq
Library source transcriptomic
Library selection other
Instrument model Illumina MiSeq
 
Description CRAC
NG-A1_NNNATTAGC_rela+val1
Data processing fastq_quality_filter -q 30 -Q 33 -i<(cat NG-8549_CAT_lib91426_4106_1_1.fastq.bz2 | bunzip2 -c) -o NG-A1.fastq #quality filtering
pyBarcodeFilter.py -f NG-A1.fastq -b barcodes.txt #demultiplex in respect to 5' barcode
cutadapt NG-A1_NNNCACTAGC_cont.fastq -a TGGAATT -m 12 -o cont.trimmed.fastq #trimming of 3' end linker
pyFastqDuplicateRemover.py -f cont.trimmed.fastq -o cont.trimmed.collapsed.fasta #removal of PCR duplicates
bowtie2-build ecoli_masked.fa ecoli bowtie2 -x ecoli -f cont.trimmed.collapsed.fasta > cont.sam #alignment using masked genome file
Genome_build: NC_000913.3
Supplementary_files_format_and_content: *_count_output_reads.gtf: Mapped read coordinates in GTF format.
 
Submission date Jan 04, 2018
Last update date Apr 05, 2018
Contact name Kenn Gerdes
E-mail(s) kgerdes@bio.ku.dk
Organization name University of Copenhagen
Street address Ole Maaloesvej 5
City Copenhagen
ZIP/Postal code 2100
Country Denmark
 
Platform ID GPL16085
Series (1)
GSE108758 Activation of the stringent response by loading of tRNA-RelA complexes at the ribosomal A-site
Relations
BioSample SAMN08292178
SRA SRX3532531

Supplementary file Size Download File type/resource
GSM2912991_rela+val1_count_output_reads.gtf.gz 752.6 Kb (ftp)(http) GTF
SRA Run SelectorHelp
Raw data are available in SRA
Processed data provided as supplementary file

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