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Status
Public on Sep 01, 2004
Title
Sporulation sigmaK mutant Hour 4.5 exp. 1
Sample type
RNA
Channel 1
Source name
sigmaK+ (PE454)
Organism
Bacillus subtilis
Extracted molecule
total RNA
Channel 2
Source name
sigmaK mutant (PE455)
Organism
Bacillus subtilis
Extracted molecule
total RNA
Description
Strains PE455 and PE454 were grown in parallel in hydrolysed casein medium at 37°C to an OD600 of 0.6. Sporulation was induced by resuspension in Sterlini-Mandelstam medium at 37C. Four hour and thirty minutes after resuspension, 25 ml of each culture were collected for RNA isolation and immediately mixed with an equal volume of methanol at –20C. RNA was isolated with a Hot Phenol/Trizol procedure. cDNA was prepared from 50 ug tot RNA and fluorescently labeled using Superscript Reverse Transcriptase and Cy5-dUTP for the RNA sample from strain PE454 and Cy3-dUTP for the RNA sample from strain PE455. Protocols for RNA isolation, cDNA preparation and labeling, hybridization to the microarrays and washing procedure can be found at http://mcb.harvard.edu/losick This is the first repetition of the experiment at this time point.
Submission date
Jul 23, 2004
Last update date
Oct 28, 2005
Contact name
Patrick Yves Eichenberger
E-mail(s)
[email protected]
Phone
617-495-0532
Fax
617-496-4642
URL
http://mcb.harvard.edu/losick
Organization name
Harvard University
Department
Molecular and Cellular Biology
Lab
Losick
Street address
16 Divinity Avenue
City
Cambridge
State/province
MA
ZIP/Postal code
02138
Country
USA
Platform ID
GPL1353
Series (1)
GSE1620
Sporulation in Bacillus subtilis (mother cell)
Data table header descriptions
ID_REF
CH1_MEDIAN
channel1 median signal
CH1_MEAN
channel1 mean signal
CH1_SD
channel1 signal standard deviation
CH1_BKD_MEDIAN
channel1 median background
CH1_BKD_MEAN
channel1 mean background
CH1_BKD_SD
channel1 background standard deviation
CH2_MEDIAN
channel2 median signal
CH2_MEAN
channel2 mean signal
CH2_SD
channel2 signal standard deviation
CH2_BKD_MEDIAN
channel2 median background
CH2_BKD_MEAN
channel2 mean background
CH2_BKD_SD
channel2 background standard deviation
VALUE
log ratio (log2 of PRE_VALUE)
FLAGS
user defined flag (default=0, bad=-100, empty=-75)
PRE_VALUE
ratio channel1 median signal minus median background and channel2 median signal minus median background, not normalized
Data table
ID_REF
CH1_MEDIAN
CH1_MEAN
CH1_SD
CH1_BKD_MEDIAN
CH1_BKD_MEAN
CH1_BKD_SD
CH2_MEDIAN
CH2_MEAN
CH2_SD
CH2_BKD_MEDIAN
CH2_BKD_MEAN
CH2_BKD_SD
VALUE
FLAGS
PRE_VALUE
1
637
645
207
227
234
70
986
999
377
314
323
95
-0.7131193
0
0.61
2
350
364
113
228
229
68
574
565
145
306
310
62
-1.1360623
0
0.455
3
435
458
150
228
239
114
720
745
196
310
336
218
-0.9856453
0
0.505
4
865
829
253
235
252
125
979
983
262
315
337
176
-0.0755203
0
0.949
5
488
516
135
234
235
65
546
561
125
316
316
62
0.1427403
0
1.104
6
252
273
82
232
240
95
430
433
118
316
330
340
-100
7
360
373
124
233
240
73
591
641
348
324
332
116
-1.0709673
0
0.476
8
304
303
73
241
252
81
509
512
120
335
357
151
-1.4659383
0
0.362
9
302
500
652
245
251
81
506
1327
2461
326
338
102
-1.6574453
0
0.317
10
561
605
362
241
247
69
924
959
364
325
328
67
-0.9050883
0
0.534
11
350
376
127
244
253
81
587
789
1099
327
331
68
-1.2933593
0
0.408
12
304
314
78
248
252
80
578
584
107
333
342
82
-2.1265803
0
0.229
13
310
339
153
245
251
70
525
584
317
330
335
68
-1.5864063
0
0.333
14
261
264
72
254
266
125
417
421
81
332
342
128
-100
15
364
379
102
253
259
71
569
593
135
331
339
75
-1.1015983
0
0.466
16
317
311
77
252
259
70
530
537
98
331
335
61
-1.6126373
0
0.327
17
614
675
336
251
254
70
854
954
594
341
351
95
-0.4981793
0
0.708
18
246
256
79
223
230
68
374
385
88
325
335
96
-1.0923403
0
0.469
19
293
469
674
226
232
76
468
1368
3685
326
327
68
-1.0831413
0
0.472
20
440
442
161
226
236
99
566
588
124
317
327
109
-0.2192703
0
0.859
Total number of rows: 4623 Table truncated, full table size 312 Kbytes .Supplementary file
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