NCBI Logo
GEO Logo
   NCBI > GEO > Accession DisplayHelp Not logged in | LoginHelp
GEO help: Mouse over screen elements for information.
          Go
Sample GSM458041 Query DataSets for GSM458041
Status Public on Oct 01, 2009
Title HaloCHIP CREB (no Forskolin) biological rep 2
Sample type genomic
 
Channel 1
Source name Hela Cells transfected with the HaloTag-CREB fusion constructs
Organism Homo sapiens
Characteristics cell line: HeLa cells
genome/variation: HaloTag-CREB fusion construct
Treatment protocol Cells were crosslinked with 0.75% formaldehyde for 10min at 22C.
Growth protocol HeLa cells (2-4 x 105) were plated in a single well of a standard 6-well plate. After reaching 70-80% confluency, typically 18-24 hours later, cells were transfected with the HaloTag-CREB fusion constructs.
Extracted molecule genomic DNA
Extraction protocol ChIP assays were performed as described in http://www.usbweb.com/proto/78460a.pdf. HaloCHIP experiments were performed as described in http://www.promega.com/tbs/tm075/tm075.pdf.
Label Cy5
Label protocol Standard Nimblegen protocol
 
Channel 2
Source name Hela Cells
Organism Homo sapiens
Characteristics cell line: HeLa cells
Treatment protocol Cells were crosslinked with 0.75% formaldehyde for 10min at 22C.
Growth protocol HeLa cells (2-4 x 105) were plated in a single well of a standard 6-well plate.
Extracted molecule genomic DNA
Extraction protocol ChIP assays were performed as described in http://www.usbweb.com/proto/78460a.pdf. HaloCHIP experiments were performed as described in http://www.promega.com/tbs/tm075/tm075.pdf.
Label Cy3
Label protocol Standard Nimblegen protocol
 
 
Hybridization protocol Standard Nimblegen protocol
Scan protocol Standard Nimblegen protocol
Description no additional information
Data processing The raw data from the arrays were analyzed as follows: the log2 ratio (enriched-cy5/total input-cy3) was calculated for each probe and data were then smoothed by averaging across a sliding window of 3 neighbouring probes shifting 1 probe at a time, minimizing noise from single probes. The median and standard deviation were calculated from the smoothed ratios for each sample. The median was subtracted from each ratio and divided by the standard deviation to center and normalize the data from each array. To summarize the enrichment for an entire promoter, the top 4 probe values were averaged for a given promoter region to approximate the 75th percentile value. The raw data, normalized data, and collapsed data for each array are available as supplemental at the following site: www.switchgeargenomics.com/creb_supp_data/.
 
Submission date Sep 30, 2009
Last update date Sep 30, 2009
Contact name Danette Hartzell
E-mail(s) [email protected]
Organization name Promega
Street address 2800 Woods Hollow Road
City Madison
State/province WI
ZIP/Postal code 53711
Country USA
 
Platform ID GPL9325
Series (1)
GSE18347 CREB ChIP-chip and HaloCHIP-chip experiments

Data table header descriptions
ID_REF
VALUE log2 ratio (enriched-cy5/input-cy3)

Data table
ID_REF VALUE
1 -1.152480551
2 -0.595999632
3 -0.510115955
4 0.369360146
5 -0.312688513
6 0.013083914
7 0.227304068
8 0.081486846
9 0.045053284
10 -0.194295177
11 -0.16049834
12 0.160401824
13 0.174031081
14 -0.766215155
15 -0.302973521
16 0.002304737
17 -0.576267762
18 -0.479062476
19 -0.0284374
20 0.172836154

Total number of rows: 391854

Table truncated, full table size 7407 Kbytes.




Supplementary file Size Download File type/resource
GSM458041_CREBset2_CTRL-cy3.txt.gz 3.7 Mb (ftp)(http) TXT
GSM458041_CREBset2_EXP-cy5.txt.gz 3.7 Mb (ftp)(http) TXT
Processed data included within Sample table
Processed data are available on Series record

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