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Sample GSM763533 Query DataSets for GSM763533
Status Public on Jul 20, 2011
Title Hela Dnase I hypersensitivity
Sample type SRA
 
Source name Hela
Organism Homo sapiens
Characteristics subcellular: Whole cell
cell type: Hela
Treatment protocol DNase footprinting was done as previously described (Hesselberth et al., 2009).
Growth protocol Hela cells were cultured as described previously (http://genome.ucsc.edu/ENCODE/protocols/cell/human/HeLa-S3_protocol.pdf)
Extracted molecule genomic DNA
Extraction protocol Samples were firstly size fractionated by sucrose gradient centrifugation to obtain fragments that were cleaved on both ends by DNase I, referred to as DNase I double-hit fragments, as previously described (Sabo et al. ,2006). Resultant fragments of 100-500 bp in length were then used to construct DNaseI libraries according to Illumina's genomic prep kit protocol with minor modifications as previously described (Hesselberth et al., 2009). Libraries were sequenced to produce 36 bp reads according to standard sequencing-by-synthesis methodology on an Illumina Genome Analyzer (GAII).
 
Library strategy DNase-Hypersensitivity
Library source genomic
Library selection DNAse
Instrument model Illumina Genome Analyzer II
 
Description Dnase I cleaved DNA fragments
Data processing Sequence data were evaluated and aligned to the reference mitochondrial genome using BowTie (Langmead et al., 2009) using default parameters and returning only unique aligning read. The 5’ termini of the sequenced reads, corresponding to the cleavage sites, was used to assign each nucleotide within the mitochondrial genome an integer score corresponding to DNase I cleavage frequency. The subsequent DNase I cleavage profiles were subject to de-spiking to account for DNase I dinucleotide cleavage bias was corrected in cleavage frequencies as previously described (Hesselberth et al., 2009).
 
Submission date Jul 19, 2011
Last update date May 15, 2019
Contact name Tim R. Mercer
Organization name Garvan
Lab Prof. John Mattick
Street address 384 Victoria Street Darlinghurst NSW 2010
City Sydney
State/province New South Wales
ZIP/Postal code 2010
Country Australia
 
Platform ID GPL9115
Series (1)
GSE30772 The human mitochondrial transcriptome
Relations
SRA SRX084350
BioSample SAMN00672479

Supplementary file Size Download File type/resource
GSM763533_Hela_DNaseI.wig.gz 66.7 Kb (ftp)(http) WIG
SRA Run SelectorHelp
Raw data are available in SRA
Processed data provided as supplementary file

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