GEO DataSets

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by high throughput sequencing; Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL19756

294 Samples

Download data: BW

(Submitter supplied) Genome-wide, little is understood about how proteins organize at inducible promoters before and after in-duction, and to what extent inducible and constitutive architectures depend on cofactors. We report that se-quence-specific transcription factors and their tethered cofactors (e.g., SAGA, Mediator, TUP, NuA4, SWI/SNF, RPD3-L) are already bound to promoters prior to induction (“poised”), rather than recruited upon induction, whereas induction recruits the pre-initiation complex (PIC). more...

Organism:

Saccharomyces cerevisiae

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL19756

282 Samples

Download data: BW

(Submitter supplied) Genome-wide, little is understood about how proteins organize at inducible promoters before and after in-duction, and to what extent inducible and constitutive architectures depend on cofactors. We report that se-quence-specific transcription factors and their tethered cofactors (e.g., SAGA, Mediator, TUP, NuA4, SWI/SNF, RPD3-L) are already bound to promoters prior to induction (“poised”), rather than recruited upon induction, whereas induction recruits the pre-initiation complex (PIC). more...

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by high throughput sequencing

Platform:

GPL19756

12 Samples

Download data: BW

(Submitter supplied) The histone acetyltransferase (HAT) subunit of coactivator complex SAGA, Gcn5, is required for efficient eviction of promoter nucleosomes at certain highly expressed yeast genes, including those activated by transcription factor Gcn4 in amino acid-deprived cells; however, the importance of other HAT complexes in this process was poorly understood. Analyzing mutations that disrupt the integrity or activity of HAT complexes NuA4 or NuA3, or the HAT Rtt109, revealed that only NuA4 acts on par with Gcn5, and functions additively, in evicting and repositioning promoter nucleosomes and stimulating transcription of starvation-induced genes. more...

Organism:

Saccharomyces cerevisiae

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platforms:

GPL27812 GPL23014

283 Samples

Download data: BIGWIG, BW

(Submitter supplied) We analyzed the genome-wide expression profile of the wild type strain and the gcn5 mutant (component of the SAGA complex) under basal and cell wall stress (CR during 3 hours) conditions.

Organism:

Schizosaccharomyces pombe; Saccharomyces cerevisiae

Type:

Expression profiling by array

Platform:

GPL2529

12 Samples

Download data: CEL

(Submitter supplied) The SAGA coactivator complex facilitates transcription initiation through chromatin-modifying activities and interaction with TBP. SAGA was suggested to regulate the expression of about 10% of yeast genes, leading to the longstanding distinction of SAGA-dominated from TFIID-dominated genes, depending on the complex used to recruit TBP to promoters. We reassessed the genome-wide localization of SAGA by using ChEC-seq and its role on transcription through quantification of newly-synthesized mRNA. more...

Organism:

Saccharomyces cerevisiae

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL17342

5 Samples

Download data: RTF, WIG

(Submitter supplied) The SAGA co-activator has been implicated in the regulation of a smal subset of genes in budding yeast in transcriptomic analyses performed in steady-state levels of RNA. We used microarrays to analyse newly-synthesized RNA in several mutants for the SAGA complex to disclose and readdress the impact of this complex in RNA Polymerase II transcription.

Organism:

Schizosaccharomyces pombe; Saccharomyces cerevisiae

Type:

Expression profiling by array

Platform:

GPL2529

68 Samples

Download data: CEL

(Submitter supplied) TFIID and SAGA complexes play a critical role in RNA Polymerase II dependent activated transcription. Although the two regulatory complexes are recruited to promoters by activation domain-interactions, the contribution of the different subunits or the different domains of the individual subunits is not completely understood. Taf9 is a shared subunit in TFIID and SAGA and has an N-terminal H3-like histone fold domain and a highly conserved C-terminal domain, Taf9-CTD. more...

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by array

Platform:

GPL14009

14 Samples

Download data: TXT

(Submitter supplied) In Saccharomyces cerevisiae, the SAGA complex regulates its own activity by undergoing multimerization. This multimerization is triggered by SAGA autoacetylation at three sites on its Ada3 subunit, allowing recognition of this acetylation by the bromodomain of the Gcn5/Spt7 SAGA subunit. Once multimerized, SAGA is capable of cooperatively acetylating chromatin, and an inability to autoacetylate Ada3 leads to transcriptional and phenotypic defects in a wide range of stress-activated genes. more...

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by high throughput sequencing

Platform:

GPL17342

30 Samples

Download data: TXT

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by high throughput sequencing; Genome binding/occupancy profiling by high throughput sequencing; Other

Platform:

GPL19756

40 Samples

Download data: BW, TAB

(Submitter supplied) Regulation of RNA polymerase II (RNAPII) transcription requires the concerted efforts of several multisubunit coactivator complexes, which interact with the RNAPII preinitiation complex (PIC) to stimulate transcription. We previously showed that separation of the Mediator core (cMed) from Mediator’s tail module results in modest overactivation of genes annotated as highly dependent on TFIID for expression. more...

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by high throughput sequencing; Other

Platform:

GPL19756

18 Samples

Download data: TAB

(Submitter supplied) Regulation of RNA polymerase II (RNAPII) transcription requires the concerted efforts of several multisubunit coactivator complexes, which interact with the RNAPII preinitiation complex (PIC) to stimulate transcription. We previously showed that separation of the Mediator core (cMed) from Mediator’s tail module results in modest overactivation of genes annotated as highly dependent on TFIID for expression. more...

Organism:

Saccharomyces cerevisiae

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL19756

22 Samples

Download data: BW

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below. The SAGA co-activator complex contains distinct chromatin-modifying activities and is recruited by DNA-bound activators to regulate the expression of a subset of genes. Surprisingly, recent studies revealed little overlap between genome-wide SAGA-binding profiles and changes in gene expression upon depletion of subunits of the complex. As indicators of SAGA recruitment on chromatin, we monitored in yeast and human cells the genome-wide distribution of histone H3K9 acetylation and H2B ubiquitination, which are respectively deposited or removed by SAGA. more...

Organism:

Homo sapiens; Saccharomyces cerevisiae

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platforms:

GPL11154 GPL13821 GPL10999

23 Samples

Download data: WIG

(Submitter supplied) The SAGA co-activator complex contains distinct chromatin-modifying activities and is recruited by DNA-bound activators to regulate the expression of a subset of genes. Surprisingly, recent studies revealed little overlap between genome-wide SAGA-binding profiles and changes in gene expression upon depletion of subunits of the complex. As indicators of SAGA recruitment on chromatin, we monitored in yeast and human cells the genome-wide distribution of histone H3K9 acetylation and H2B ubiquitination, which are respectively deposited or removed by SAGA. more...

Organism:

Saccharomyces cerevisiae

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platform:

GPL13821

19 Samples

Download data: WIG

(Submitter supplied) The SAGA co-activator complex contains distinct chromatin-modifying activities and is recruited by DNA-bound activators to regulate the expression of a subset of genes. Surprisingly, recent studies revealed little overlap between genome-wide SAGA-binding profiles and changes in gene expression upon depletion of subunits of the complex. As indicators of SAGA recruitment on chromatin, we monitored in yeast and human cells the genome-wide distribution of histone H3K9 acetylation and H2B ubiquitination, which are respectively deposited or removed by SAGA. more...

Organism:

Homo sapiens

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platforms:

GPL10999 GPL11154

4 Samples

Download data: WIG

(Submitter supplied) Gene expression was compared for wild type yeast (BY4741) and yeast lacking Gal11/Med15 and Med3, or from a gal11-myc med3∆ strain. The gal11-myc allele shows a partial loss of function when combined with med3∆. Expression was analyzed for yeast grown in YPD as well as in CSM. We also examined gene expression of the wild type strain BY4742 grown in YPD and include that data here.

Organism:

Saccharomyces cerevisiae; Schizosaccharomyces pombe

Type:

Expression profiling by array

Platform:

GPL2529

21 Samples

Download data: CEL, TXT

(Submitter supplied) Acetylation of histone tails has long been associated with gene activation. Exactly how acetylation regulates gene expression is not fully known. Acetylation events at specific sites or collections of sites on histones elicit distinct outcomes. Here we examine the downstream consequences of histone acetylation by the histone H4 acetyltransferase NuA4 on a genomic scale. Evidence is presented that Bdf1, which is known to bind to acetylated lysine H4 tails in vitro, binds to nucleosomes in vivo and that this binding is dependent upon Esa1, the catalytic subunit of NuA4. more...

Organism:

Saccharomyces cerevisiae

Type:

Genome binding/occupancy profiling by genome tiling array

Platform:

GPL1924

22 Samples

Download data

(Submitter supplied) An important distinction is frequently made between constitutively expressed housekeeping genes versus regulated genes. Although generally characterized by different DNA elements, chromatin architecture and cofactors, it is not known to what degree promoter classes strictly follow regulatability rules and which molecular mechanisms dictate such differences. We show that SAGA-dominated/TATA-box promoters are more responsive to changes in the amount of activator, even compared to TFIID/TATA-like promoters that depend on the same activator Hsf1. more...

Organism:

Saccharomyces cerevisiae

Type:

Genome binding/occupancy profiling by array

Platform:

GPL21864

24 Samples

Download data: TXT

(Submitter supplied) An important distinction is frequently made between constitutively expressed housekeeping genes versus regulated genes. Although generally characterized by different DNA elements, chromatin architecture and cofactors, it is not known to what degree promoter classes strictly follow regulatability rules and which molecular mechanisms dictate such differences. We show that SAGA-dominated/TATA-box promoters are more responsive to changes in the amount of activator, even compared to TFIID/TATA-like promoters that depend on the same activator Hsf1. more...

Organism:

Saccharomyces cerevisiae

Type:

Genome binding/occupancy profiling by high throughput sequencing

Platforms:

GPL21944 GPL19756

10 Samples

Download data: BW

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by array; Genome binding/occupancy profiling by high throughput sequencing; Genome binding/occupancy profiling by array

4 related Platforms

72 Samples

Download data: BW, TXT