NCBI Logo
GEO Logo
   NCBI > GEO > Accession DisplayHelp Not logged in | LoginHelp
GEO help: Mouse over screen elements for information.
          Go
Sample GSM942042 Query DataSets for GSM942042
Status Public on Sep 05, 2012
Title RpL12-Myc
Sample type SRA
 
Source name pools of wing imaginal discs
Organism Drosophila melanogaster
Characteristics tissue: Wing imaginal discs
developmental stage: Third instar larvae
genotype: sd::Gal4>UAS::FH-cortoCD
Extracted molecule total RNA
Extraction protocol Wing imaginal discs of third instar larvae (one disc per larva) were dissected by batches of 50 in PBS and frozen in liquid nitrogen. 300 discs (6 batches) were pooled and homogenized in lysis buffer using a FastPrep-24 during 20 s at 4m.s-1 (MP Biomedicals, Lysing Matrix D). Total RNA were extracted using RNeasy® kit (Quiagen). Library preparation and Illumina sequencing (multiplexed 50 bp paired-end sequencing on HiSeq 2000) were performed at the BC Cancer Agency Genome Sciences Center (Canada) following the manufacturer's protocol.
 
Library strategy RNA-Seq
Library source transcriptomic
Library selection cDNA
Instrument model Illumina HiSeq 2000
 
Data processing Illumina Casava 1.7 was used for basecalling.
Before mapping, poly N read tails were trimmed, reads ≤11 bases were removed, and reads with quality mean ≤12 were discarded.
Reads were then aligned against the D. melanogaster genome (dm3 genome assembly, BDGP Release 5.38) using Bowtie mapper (version 0.12.7)
Alignments from reads matching more than once on the reference genome were removed using Java version of samtools.
To compute gene expression, D. melanogaster GFF3 genome annotation from FlyBase (version 5.38) was used. All overlapping regions between alignments and referenced exons were counted.
Technical replicates coming from paired-end reads were first summed. Then, all samples were normalized together. Data were normalized according to the scaling normalization proposed by Robinson and Oshlack and implemented in the edgeR package version 1.6.10
A Fisher's Exact Test was then performed using the sage.test function of the statmod package version 1.4.6. Finally, a Benjamini and Hochberg (BH) P-value adjustment was made.
Genome_build: dm3 genome assembly, BDGP Release 5.38
Supplementary_files_format_and_content: tab-delimited text files include abundance estimation for each Sample. ID: transcript ID from modEncode Drosophila database, Type: feature annotation type according to the GFF format definition, Chromosome: chromsome reference, Start: genomic start position of the feature, End: genomic end position of the feature, Strand: genomic strand position + or - of the feature, length: full length of the feature, FullCovered: boolean that indicates is the feature is fully covered by reads, BasesNotCovered: the number of bases not covered by any reads after mapping, Ratio: the feature abundance among all the feature list, Count: the raw read count covering the feature
 
Submission date Jun 04, 2012
Last update date May 15, 2019
Contact name Stéphane LE CROM
Organization name École normale supérieure
Department Biology Institute - IBENS
Lab Genomic platform
Street address 46 rue d'Ulm
City Paris
ZIP/Postal code 75013
Country France
 
Platform ID GPL13304
Series (1)
GSE38435 New partners in regulation of gene expression: the Enhancer of Trithorax and Polycomb Corto interacts with methylated Ribosomal Protein L12 via its chromodomain.
Relations
Reanalyzed by GSM3278124
SRA SRX151345
BioSample SAMN01036608

Supplementary file Size Download File type/resource
GSM942042_rpl12m2_1.txt.gz 662.5 Kb (ftp)(http) TXT
GSM942042_rpl12m2_2.txt.gz 663.0 Kb (ftp)(http) TXT
SRA Run SelectorHelp
Raw data are available in SRA
Processed data provided as supplementary file

| NLM | NIH | GEO Help | Disclaimer | Accessibility |
NCBI Home NCBI Search NCBI SiteMap