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GSE23204
Saccharomyces cerevisiae
30 Downloadable Samples
Affymetrix Yeast Genome S98 Array (ygs98)
Description
The Rad23/Rad4 protein complex plays a major role in DNA damage recognition during nucleotide excision repair (NER) in yeast. We recently showed that two distinct pathways contribute to efficient NER in yeast. The first operates independently of de novo protein synthesis and requires a nonproteolytic function of the 19S regulatory complex of the 26S proteasome and Rad23. The second pathway requires de novo protein synthesis, and relies on the activity of a newly identified Rad7-containing E3 ubiquitin ligase that ubiquitinates Rad4 in response to UV. Surprisingly, we found that cells deleted of either Rad23 or Rad4 caused reduced Rad4 and Rad23 mRNA levels respectively. We considered the possibility of an unexpected role of Rad23 and Rad4 in regulating the expression of genes involved in the transcriptional response to DNA damage. Gene expression profiling has suggested that Rad23 and Rad4 may function as a complex to affect transcription of a small subset of genes in response to UV damage. To determine how Rad4 and Rad23 contribute to the regulation of these genes, we have examined the occupancy of Rad4/Rad23 in their promoter regions by chromatin immunoprecipitation (ChIP), both in the presence and absence of UV damage. Our preliminary ChIP data suggests that the Rad4/Rad23 complex regulates a set of genes in response to UV light. We also proposed that the transcriptional regulatory activity of the Rad4-Rad23 complex required Rad4 ubiquitination. These arrays test this theory using the psocs mutant strain, which is unable to facilitate Rad4 ubiquitination after UV irradiation.
Publication Title
UV induced ubiquitination of the yeast Rad4-Rad23 complex promotes survival by regulating cellular dNTP pools.
Sample Metadata Fields
Time
View Samples- Saccharomyces cerevisiae
- 12 Downloadable Samples
- Affymetrix Yeast Genome S98 Array (ygs98)
Description
The Rad23/Rad4 protein complex plays a major role in DNA damage recognition during nucleotide excision repair (NER) in yeast. We recently showed that two distinct pathways contribute to efficient NER in yeast. The first operates independently of de novo protein synthesis and requires a nonproteolytic function of the 19S regulatory complex of the 26S proteasome and Rad23. The second pathway requires de novo protein synthesis, and relies on the activity of a newly identified E3 ubiquitin ligase that ubiquitinates Rad4 in response to UV. Surprisingly, we found that cells deleted of either Rad23 or Rad4 caused reduced Rad4 and Rad23 mRNA levels respectively. We considered the possibility of an unexpected role of Rad23 and Rad4 in regulating the expression of genes involved in the transcriptional response to DNA damage. Gene expression profiling has suggested that Rad23 and Rad4 may function as a complex to affect transcription of a small subset of genes in response to UV damage. To determine how Rad4 and Rad23 contribute to the regulation of these genes, we have examined the occupancy of Rad4/Rad23 in their promoter regions by chromatin immunoprecipitation (ChIP), both in the presence and absence of UV damage. Our preliminary ChIP data suggests that the Rad4/Rad23 complex regulates a set of genes in response to UV light.
Publication Title
UV induced ubiquitination of the yeast Rad4-Rad23 complex promotes survival by regulating cellular dNTP pools.
Sample Metadata Fields
No sample metadata fields
View Samples- Homo sapiens
- 11 Downloadable Samples
- Affymetrix Human Exon 1.0 ST Array [probe set (exon) version (huex10st)
Description
In order to identify genes with different overall transcript levels or differential exon levels (alternative processing) between the groups Control and Tat-SF1KD, we studied 11 hybridizations on the HumanExon10ST array using mixed model analysis of variance. 526 genes with significant transcript level differences between the groups and 1397 genes with significant differential exon levels were found, including 99 genes with both transcript and exon level differences (p<0.01).
Publication Title
Identification of Tat-SF1 cellular targets by exon array analysis reveals dual roles in transcription and splicing.
Sample Metadata Fields
Cell line
View Samples- Drosophila melanogaster
- 2 Downloadable Samples
- Affymetrix Drosophila Genome 2.0 Array (drosophila2)
Description
Expression data from Kc167 cells under normal conditions. Used to assess expression levels of genes with ORC bound at promoter.
Publication Title
Drosophila ORC localizes to open chromatin and marks sites of cohesin complex loading.
Sample Metadata Fields
Cell line
View Samples- Arabidopsis thaliana
- 20 Downloadable Samples
- Affymetrix Arabidopsis ATH1 Genome Array (ath1121501)
Description
Volatiles of certain rhizobacteria can cause growth inhibitory effects on plants/ Arabidopsis thaliana. How these effects are initiated and which mechanisms are enrolled is not yet understood. Obviously the plant can survive/live with the bacteria in the soil, which suggest the existance of a regulatory mechanism/network that provide the possibility for coexistance with the bacteria. To shed light on this regulatory mechanism/network we performed a microarray anlaysis of Arabidopsis thaliana co-cultivated with two different rhizobacteria strains.
Publication Title
Volatiles of two growth-inhibiting rhizobacteria commonly engage AtWRKY18 function.
Sample Metadata Fields
Age, Specimen part, Time
View Samples- Hordeum vulgare
- 12 Downloadable Samples
- Affymetrix Barley Genome Array (barley1)
Description
Caryopses of barley (Hordeum vulgare), like all other cereal seeds, are complex sink organs optimized for storage starch accumulation and embryo development. Their development from early stages after pollination to late stages of seed ripening has been studied in great detail. However, information on the caryopses diurnal adaptation to changes in light, temperature and alterations in phloem-supplied carbon and nitrogen remained unknown.
Publication Title
Significance of light, sugar, and amino acid supply for diurnal gene regulation in developing barley caryopses.
Sample Metadata Fields
Age, Specimen part
View Samples- Hordeum vulgare
- 12 Downloadable Samples
- Affymetrix Barley Genome Array (barley1)
Description
High temperature stress, like any abiotic stress, impairs the physiology and development of plants, including the stages of seed setting and ripening.
Publication Title
Transcriptome analysis of high-temperature stress in developing barley caryopses: early stress responses and effects on storage compound biosynthesis.
Sample Metadata Fields
Age, Specimen part
View Samples- Homo sapiens
- 12 Downloadable Samples
IlluminaHiSeq2000
Description
In a fluorescence polarization screen for MYC-MAX interaction, we have identified a novel small molecule inhibitor of MYC, KJ-Pyr-9, from a Kröhnke pyridine library. The Kd of KJ-Pyr-9 for MYC in vitro is 6.5 ± 1.0 nM as determined by backscattering interferometry; KJ-Pyr-9 also interferes with MYC-MAX complex formation in the cell as shown in a protein fragment complementation assay. KJ-Pyr-9 specifically inhibits MYC-induced oncogenic transformation in cell culture; it has no or only weak effects on the oncogenic activity of several unrelated oncoproteins. KJ-Pyr-9 preferentially interferes with the proliferation of MYC-overexpressing human and avian cells and specifically reduces the MYC-driven transcriptional signature. In vivo, KJ-Pyr-9 effectively blocks the growth of a xenotransplant of MYC-overexpressing human cancer cells. Overall design: 4 treatment groups analyzed in triplicate: no treatment(control), 20uM KJ-Pyr-9, 0.1ug/mL doxycycline and KJ-Pyr-9 in combination with doxycycline
Publication Title
Inhibitor of MYC identified in a Kröhnke pyridine library.
Sample Metadata Fields
No sample metadata fields
View Samples- Arabidopsis thaliana
- 8 Downloadable Samples
- Affymetrix Arabidopsis ATH1 Genome Array (ath1121501)
Description
Plant BBR/BPC transcription factors contain the conserved Basic-Pentacystein (BPC) DNA-binding domain. Arabidopsis group II BBR/BPC proteins interact with PRC1 component LHP1 in vivo. Microarray experiments with Arabidopsis bpc4 bpc6, lhp1-4 and lhp1-4 bpc4 bpc6 suggest an importance of this interaction in the concerted repression of homeotic genes.
Publication Title
The Arabidopsis GAGA-Binding Factor BASIC PENTACYSTEINE6 Recruits the POLYCOMB-REPRESSIVE COMPLEX1 Component LIKE HETEROCHROMATIN PROTEIN1 to GAGA DNA Motifs.
Sample Metadata Fields
Age, Specimen part
View Samples- Arabidopsis thaliana
- 35 Downloadable Samples
- Affymetrix Arabidopsis ATH1 Genome Array (ath1121501)
Description
AtGenExpress: A multinational coordinated effort to uncover the transcriptome of the multicellular model organism Arabidopsis thaliana
Publication Title
The AtGenExpress global stress expression data set: protocols, evaluation and model data analysis of UV-B light, drought and cold stress responses.
Sample Metadata Fields
Specimen part
View Samples