NCBI Logo
GEO Logo
   NCBI > GEO > Accession DisplayHelp Not logged in | LoginHelp
GEO help: Mouse over screen elements for information.
          Go
Sample GSM526862 Query DataSets for GSM526862
Status Public on Jun 01, 2011
Title QM9414 strain under carbon catabolite repression versus under carbon catabolite derepression dye switch
Sample type RNA
 
Channel 1
Source name Total RNA extracted from T reesei QM9414 strain under carbon catabolite derepression.
Organism Trichoderma reesei
Characteristics strain: QM9141
condition: Carbon Catabolite Derepression
Treatment protocol Chemostat cultures with D-glucose as the limiting carbon source at 0.025 gram/hour which have previously been shown to lead to CCR derepression (Karaffa et al. 2006)
Extracted molecule total RNA
Extraction protocol Fungal mycelia were harvested by filtration, washed with distilled cold water, frozen and ground under liquid nitrogen. For extraction of total RNA purification kits (SV Total RNA Isolation System, Promega) were used according to the manufacturer’s protocol.
Label Cy3
Label protocol 1 µg RNA are retro transcribed using Superscript III retro transcriptase. The cDNA are purified using QiaQuick column (Quiagen) and incubated 1 hour at room temperature in presence of 0,05M NaBicarbonate and NHS-ester Cy.The coupling is stoped by addition of hydroxylamine to a final concentration of 0,6M. Labeled cDNA are purified using QiaQuick column.
 
Channel 2
Source name Total RNA extracted from T reesei QM9414 strain under carbon catabolite repression.
Organism Trichoderma reesei
Characteristics strain: QM9141
condition: Carbon Catabolite Repression
Treatment protocol Chemostat cultures with D-glucose as the limiting carbon source at 0.07 gram/hour which have previously been shown to lead to CCR repression (Karaffa et al. 2006)
Extracted molecule total RNA
Extraction protocol Fungal mycelia were harvested by filtration, washed with distilled cold water, frozen and ground under liquid nitrogen. For extraction of total RNA purification kits (SV Total RNA Isolation System, Promega) were used according to the manufacturer’s protocol.
Label Cy5
Label protocol 1 µg RNA are retro transcribed using Superscript III retro transcriptase. The cDNA are purified using QiaQuick column (Quiagen) and incubated 1 hour at room temperature in presence of 0,05M NaBicarbonate and NHS-ester Cy.The coupling is stoped by addition of hydroxylamine to a final concentration of 0,6M. Labeled cDNA are purified using QiaQuick column.
 
 
Hybridization protocol 1.5µg of labelled cDNA is mixed with one volume of 2X GE buffer (Agilent) and 10% of blocking agent. The hybridization sample volume is dispense on the selected microarray and incubated overnight at 65°C in a hybridization oven (Agilent). The array slides are washed 1 minute in "wash 1 buffer" at room temperature and one minute in "wash 2 buffer" at 37°C. The array slides are then air dryed and ready for scaning.
Scan protocol The hybridized microarrays were scanned using Genepix 4000B (Molecular Devices, Sunnyvale, CA, USA) and the resulting image files analyzed by GenePix Pro 6.1 software (Axon).
Data processing For each GenePix output file, two filters were applied, one to clear out flagged spots and another one to discard saturating spots where the median foreground intensity was greater than 60,000 in one of the two channels. The resulting median foreground intensities were normalized, without background signal subtraction, using a global Lowess correction followed by a print-tip median normalization step (Lemoine et al., 2006).
 
Submission date Mar 25, 2010
Last update date Jun 01, 2011
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 GPL9076
Series (1)
GSE21072 The CRE1 carbon catabolite repressor of the fungus Trichoderma reesei: a master regulator of carbon assimilation

Data table header descriptions
ID_REF Probe identifier
VALUE log2 (Cy5/Cy3) already swapped
MEAN_INTENSITY (log2(Cy5) + log2(Cy3)) /2

Data table
ID_REF VALUE MEAN_INTENSITY
6_172518_REV -0.239 7.754
30_47643_REV 0.275 6.508
17_330017_REV -0.797 7.883
2_1726241_FWD -1.479 8.067
26_326126_FWD 0.258 6.429
1_272322_REV 0.545 6.813
10_22853_REV -0.102 7.92
25_409380_REV 0.087 6.605
15_28303_FWD -0.158 7.314
42_26785_REV 0.222 7.17
5_1387018_FWD -0.155 8.313
3_1881366_FWD -0.897 10.689
1_3060718_FWD -0.071 8.08
38_21317_REV 0.03 6.329
13_243216_REV -0.173 8.134
29_290119_FWD -0.373 7.228
6_169296_FWD 0.311 7.348
8_248985_FWD -0.372 7.419
11_700741_REV -0.279 6.803
27_405761_REV 0.279 6.547

Total number of rows: 131281

Table truncated, full table size 3327 Kbytes.




Supplementary file Size Download File type/resource
GSM526862.gpr.gz 22.0 Mb (ftp)(http) GPR
Processed data included within Sample table

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