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Sample GSM925657 Query DataSets for GSM925657
Status Public on May 03, 2012
Title crt1-4 bisulfite
Sample type SRA
 
Source name leaf tissue, crt1-4, bisulfite-treated genomic DNA
Organism Arabidopsis thaliana
Characteristics genotype: crt1-4 (eco. Columbia)
tissue: leaf
Extracted molecule genomic DNA
Extraction protocol Genomic DNA isolated by phenol/chloroform and bisulfite treated.
Converted and fragmented genomic DNA library as described in Cokus et al., Nature 2008 (PMID 18278030), except directly with pre-methylated final adapters (see Feng et al., Methods Mol. Biol. 2011;733:223-38 (PMID 21431774) for further information).
 
Library strategy Bisulfite-Seq
Library source genomic
Library selection RANDOM
Instrument model Illumina HiSeq 2000
 
Description Bisulfite-treated genomic DNA.
Data processing BS-Seq reads were mapped with BS seeker (Chen et al., 2010 BMC Bioinformatics (PMID 20416082)) to TAIR8 chr1..5/C/M, allowing up to 2 mismatches and retaining only uniquely-mapping reads. Only reference genome cytosines covered with at least 4 reads were considered for analysis.

Supplementary_files_format_and_content: Each processed file is tab-delimited plain text with five columns and UNIX-style line endings. Lines enumerate a subset of TAIR8 chr1..5 genomic cytosines (ordered by ascending column 1 chromosome number, breaking ties by ascending column 2 coordinate). Column 1 is chromosome (1..5). Column 2 is 1-based coordinate of the genomic cytosine (successive reference + strand bases are 1, 2, 3, ... and each - strand base is numbered by the + strand base with which it is paired). Column 3 is context (CG, CHG, or CHH) of the genomic cytosine. Column 4 is genomic strand (+ or -) of the genomic cytosine. Column 5 is the empirical observed fraction of 5'-methylation, calculated as (# read C) / (# read C + # read T).

Supplementary_files_format_and_content: Quality scores in _qseq files are Phred scale with +64 ASCII offset... non-multiplexed: 1 lane.

Genome_build: TAIR8
 
Submission date May 01, 2012
Last update date May 15, 2019
Contact name Shawn J. Cokus
Organization name UCLA
Street address UCLA, 3000 Terasaki Life Sciences Building, 610 Charles Young Drive East
City Los Angeles
State/province CA
ZIP/Postal code 90095
Country USA
 
Platform ID GPL13222
Series (1)
GSE37644 MORC family ATPases required for heterochromatin condensation and gene silencing
Relations
SRA SRX145426
BioSample SAMN00990551

Supplementary file Size Download File type/resource
GSM925657_crt1-4_BSseq_processed.enumerationOfSubsetOfAthTAIR8genomicCs--chr12345-1basedCoord-CG_CHG_CHH-strand-fraction5methylC.txt.gz 130.7 Mb (ftp)(http) TXT
SRA Run SelectorHelp
Raw data are available in SRA
Processed data provided as supplementary file

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