NCBI Logo
GEO Logo
   NCBI > GEO > Accession DisplayHelp Not logged in | LoginHelp
GEO help: Mouse over screen elements for information.
          Go
Sample GSM3095922 Query DataSets for GSM3095922
Status Public on Aug 08, 2019
Title input_fpa_lib2
Sample type SRA
 
Source name seedlings, 7-day-old
Organism Arabidopsis thaliana
Characteristics ecotype: Col-0
genotype: fpa single mutant (fpa-7)
age: 7-day old
chip antibody: none
library prep kit: NEBNext Ultra DNA library Prep kit (E7370)
Growth protocol Seeds were sown on MS plates and stratified for 4 days at 4°C in the dark. Plates were transfered to a growth chamber at 21°C and grown for 7 or 8 days under long day conditions (16h light/8h dark).
Extracted molecule genomic DNA
Extraction protocol The seedlings were crosslinked for 15 min in 1 % formaldehyde under vacuum (5 min vacuum / vacuum release / 10 min vacuum) followed by 6 min quenching with glycine (125mM final concentration, under vacuum), extensive rinsing with ice-cold water and drying. Crosslinked seedlings were ground into fine powder in liquid nitrogen, incubated for 15 min at 4°C in extraction buffer (25mM Tris-HCl, pH=8.0, 0.44M sucrose, 10mM MgCl2, 0.1 % Triton X-100, 2mM spermine, 10mM beta-mercaptoethanol, 1 mM PMSF, 1 % plant protease inhibitor cocktail) and filtered through 2 layers of Miracloth. Nuclei were prepared by 3 rounds of resuspension in extraction buffer (without spermine, twice with 0.25 % Triton X-100 and once with 0.1 % Triton X-100), incubation 12 min on ice and centrifugation at 1,000g for 12 min at 4°C (only 300g for the last centrifugation). The nuclei suspension was stored in 20 % glycerol at -70°C until used. After thawing on ice, nuclei were centrifuged for 10 min at 11,000g at 4°C and resuspended in nuclei lysis buffer (500 mM Tris-HCl, pH=8.0, 10mM EDTA, 1 % SDS, 1mM PMSF, 1 % plant protease inhibitor cocktail). Chromatin was sonicated for 12 min using a Covaris S220 (peak power=150, duty factor=20, cycles/burst=200). Soluble chromatin was recovered by centrifugation at 13,000g for 15 min at 4°C and diluted to (final concentrations): 20mM Tris-HCl, 150mM NaCl, 2mM EDTA, 0.1 % SDS, 1 % Triton X-100, 1mM PMSF, 1 % plant protease inhibitor cocktail.
Libraries were prepared using NEBNext Ultra DNA library prep kits (NEB, E7370 or E7645 as indicated). Libraries were sequenced on a NextSeq 500 instrument at Indiana University Center for Genomics and Bioinformatics.
 
Library strategy ChIP-Seq
Library source genomic
Library selection ChIP
Instrument model Illumina NextSeq 500
 
Description same DNA sample as input_fpa_lib1. Independent library preparation and sequencing run.
Data processing Trimming : Trimmomatic (v0.33, Bolger, Lohse & Usabel, Bioinformatics, 2014 ; btu170) in paired end mode
Alignment : Bowtie2 (v 2.2.6, Langmead & Salzberg, Nature Methods, 2012 ; 9:357-59) with --dovetail option and a maximum insert size of 1Kb
Filtering : Duplicate reads were identified with Picard (v. 2.2.4) MarkDuplicates and removed. Samtools v 1.3 was used to keep only reads mapped in proper pairs with mapping quality (MapQ) above 2.
Coverage and normalization: Aligned reads were imported in R (v.3.3.2) to obtain coverages using Bioconductor (v3.4). Coverages were normalized as fragments per 10 million (FP10M) and exported to bigWig files with the rtracklayer package.
Genome_build: TAIR10
Supplementary_files_format_and_content: bigWig files contain the normalized coverage (FP10M : fragments per 10 million), i.e. the normalized number of fragments covering each base
 
Submission date Apr 12, 2018
Last update date Aug 08, 2019
Contact name Pascal GP Martin
E-mail(s) pascal.martin@inrae.fr
Organization name INRAE
Department UMR1332 BFP
Lab FDFE
Street address 71 avenue Edouard Bourlaux
City Villenave d'Ornon
ZIP/Postal code 33140
Country France
 
Platform ID GPL19580
Series (2)
GSE112443 RNA-seq, ChIP-seq and MNase-seq in WT, fpa mutant and bdr1,2,3 mutant Arabidopsis seedlings
GSE113078 Genome-wide profiling (ChIP-seq) of RNA polymerase II in wild-type, fpa mutant and bdrs triple mutant
Relations
BioSample SAMN08922552
SRA SRX3929637

Supplementary file Size Download File type/resource
GSM3095922_GSF1413_input_fpa_1085_normcovFiltr.bigWig 63.8 Mb (ftp)(http) BIGWIG
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