GEO DataSets

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

Organism:

Saccharomyces cerevisiae

Type:

Genome binding/occupancy profiling by high throughput sequencing; Genome binding/occupancy profiling by genome tiling array

Platforms:

GPL26302 GPL7250

64 Samples

Download data: BED, BEDGRAPH, CEL

(Submitter supplied) Replication forks terminate at TERs and telomeres. Forks that converge or encounter transcription generate topological stress. Combining genetic, genomic and imaging approaches we found that Rrm3hPif1 and Sen1hSenataxin helicases assist termination at TERs, Sen1 at telomeres. rrm3 and sen1 are synthetic lethal, fail to terminate replication exhibiting lagging chromosomes and fragility at TERs and telomeres. more...

Organism:

Saccharomyces cerevisiae

Type:

Genome binding/occupancy profiling by genome tiling array

Platform:

GPL7250

16 Samples

Download data: BED, BEDGRAPH, CEL

(Submitter supplied) Smc5/6 is essential for genome structural integrity by yet unknown mechanisms. Here we find that Smc5/6 co-localizes with the DNA crossed-strand processing complex Sgs1-Top3-Rmi1 (STR) at genomic regions known as natural pausing sites (NPSs) where it facilitates Top3 retention. Individual depletions of STR subunits and Smc5/6 cause similar accumulation of joint molecules (JMs) composed of reversed forks, double Holliday Junctions and hemicatenanes, indicative of Smc5/6 regulating Sgs1 and Top3 DNA processing activities. more...

Organism:

Saccharomyces cerevisiae

Type:

Genome binding/occupancy profiling by genome tiling array

Platform:

GPL7250

22 Samples

Download data: BAR, CEL, TXT

(Submitter supplied) In Saccharomyces cerevisiae, the kinase Rio1 regulates rDNA transcription and segregation, pre-rRNA cleavage, and 40S ribosomal subunit maturation. Other roles are unknown. Human orthologue RIOK1; which is frequently overexpressed in malignancies, drives tumor growth and metastasis. Again, also RIOK1 biology is poorly understood. In this study, we charted the global activity of Rio1 in budding yeast. more...

Organism:

Saccharomyces cerevisiae

Type:

Genome variation profiling by genome tiling array

Platform:

GPL7250

2 Samples

Download data: BED, CEL

(Submitter supplied) DNA damage tolerance (DDT) is crucial for genome integrity maintenance. DDT is mainly carried out by template switch recombination, an error-free mode of overcoming DNA lesions, or translesion DNA synthesis, which is error-prone. Here we investigated the role of Mgs1/WRNIP1 in modulating DDT. Using budding yeast, we found that elimination of Mgs1 in cells lacking Rad5, an essential protein for DDT, activates an alternative mode of DNA damage bypass, driven by recombination, that allows chromosome replication and cell viability under stress conditions that block DNA replication forks. more...

Organism:

Saccharomyces cerevisiae

Type:

Genome binding/occupancy profiling by genome tiling array

Platform:

GPL7250

16 Samples

Download data: BAR, CEL

(Submitter supplied) Analysis of PCNA levels at stalled Saccharomyces cerevisiae replication forks upon Replication Factor C (RFC) Removal Analysis of nascent DNA incorporation at progressing Saccharomyces cerevisiae replication forks upon Rfc1 depletion

Organism:

Saccharomyces cerevisiae

Type:

Genome binding/occupancy profiling by genome tiling array

Platform:

GPL7250

20 Samples

Download data: CEL, TXT

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

Organism:

Saccharomyces cerevisiae

Type:

Genome binding/occupancy profiling by high throughput sequencing; Genome binding/occupancy profiling by genome tiling array

Platforms:

GPL17342 GPL21656 GPL7250

79 Samples

Download data: BIGWIG, CEL, TXT

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

Organism:

Saccharomyces cerevisiae

Type:

Methylation profiling by array; Genome binding/occupancy profiling by high throughput sequencing; Other

Platforms:

GPL21656 GPL7250

62 Samples

Download data: BIGWIG, BW, CEL, WIG

(Submitter supplied) The Mec1 and Rad53 kinases play a central role during acute replication stress in budding yeast. They are also essential for viability in normal growth conditions, but the signal that activates the Mec1–Rad53 pathway in the absence of exogenous insults is currently unknown. Here, we show that this pathway is active at the onset of normal S phase because dNTP levels present in G1 phase are not sufficient to support processive DNA synthesis and impede DNA replication. more...

Organism:

Saccharomyces cerevisiae

Type:

Genome binding/occupancy profiling by genome tiling array

Platform:

GPL7250

5 Samples

Download data: CEL, WIG

(Submitter supplied) The tolerance pathway allows bypassing deleterious lesions that block replicative DNA polymerases. In eukaryotes tolerance is controlled by ubiquitylation of the DNA replication factor PCNA4. Here, we show that PCNAK164-ubiquitin proteases (PCNA-DUBs) Ubp10 and Ubp12 localise to replication forks. In particular, the main PCNA-DUB, Ubp10, associates primarily to nascent lagging strands. We also found that cells deficient for PCNA deubiquitylation show both increased interaction of TLS polymerase ζ-associated Rev1 with lagging strands and Rad52-dependent template switching events. more...

Organism:

Saccharomyces cerevisiae

Type:

Genome binding/occupancy profiling by genome tiling array

Platform:

GPL7250

14 Samples

Download data: BAR, CEL, TXT

(Submitter supplied) Similar to ubiquitin, SUMO forms chains, but the identity of SUMO-chain-modified factors and the purpose of this modification remain largely unknown. Here, we identify budding yeast SUMO protease Ulp2, able to disassemble SUMO chains, as a DDK interactor enriched at replication origins that promotes DNA replication initiation. Replication-engaged DDK is SUMOylated on chromatin, becoming a degradation-prone substrate when Ulp2 no longer protects it against SUMO-chain assembly. more...

Organism:

Saccharomyces cerevisiae

Type:

Genome binding/occupancy profiling by genome tiling array

Platform:

GPL7250

19 Samples

Download data: BAR, CEL

(Submitter supplied) The main objective of this study is to determine how chromatin assembly during DNA replication influences cohesin deposition

Organism:

Saccharomyces cerevisiae

Type:

Genome binding/occupancy profiling by genome tiling array

Platform:

GPL7250

7 Samples

Download data: BAR, CEL

(Submitter supplied) In budding yeast, DNA lesions and stalled replication forks are sensed by the apical checkpoint kinase Mec1/ATR, which leads to the downstream activation of the effector kinase Rad53/CHK1. This activation depends on Rad9 and Mrc1, two checkpoint mediators that integrate the nature of the challenge in different phases of the cell cycle. Rad9 mediates the activation of the DNA damage checkpoint throughout the cell cycle, while the function of Mrc1 is restricted to the S phase of the cell cycle, when it travels with the replication fork and activates the DNA replication checkpoint in response to a variety of replication impediments. more...

Organism:

Saccharomyces cerevisiae

Type:

Genome binding/occupancy profiling by genome tiling array

Platform:

GPL7250

8 Samples

Download data: BAR, CEL

(Submitter supplied) DNA topoisomerases assist DNA replication & transcription events by controlling supercoiling alterations. We investigated supercoil distribution across the yeast genome and compared with the accumulation of RNA pol2 and DNA topoisomerases particularly in S-phase. Our data indicate that Top2 along with Hmo1 maintain negative supercoil at gene boundaries by stabilizing alternative DNA structures. To understand how DNA superhelical tension accumulates across the genome we have adopted previously described method [Naughton C et al., 2013] to budding yeast where a biotin molecule was attached to TMP via a linker (bTMP). more...

Organism:

Saccharomyces cerevisiae

Type:

Genome binding/occupancy profiling by genome tiling array

Platform:

GPL7250

68 Samples

Download data: BED, BEDGRAPH, CEL

(Submitter supplied) Ixr1 is a Saccharomyces cerevisiae HMGB protein that regulates the transcription of genes related to the response to changes normoxia-hypoxia, oxidative stress response or in the readaptation of catabolic and anabolic fluxes during oxygen limitation. Besides, Ixr1 binds to cisplatin-DNA adducts with high affinity. It is known that cancerous cells usually acquire resistance against the drug after the initial treatment, thus limiting its effectiveness. more...

Organism:

Saccharomyces cerevisiae

Type:

Genome binding/occupancy profiling by genome tiling array

Platform:

GPL7250

10 Samples

Download data: CEL, CHP

(Submitter supplied) Yeast Sen1Senataxin is a RNA/DNA helicase that preserves replication forks across RNA Polymerase II-transcribed genes by counteracting RNA:DNA hybrids accumulation. We show that in Sen1-depleted cells early forks clashing head-on with transcription halt, and impair progression of sister forks within the same replicon. Unsolved replication-transcription collisions trigger the local firing of dormant origins that rescue arrested forks. more...

Organism:

Saccharomyces cerevisiae

Type:

Genome binding/occupancy profiling by genome tiling array

Platform:

GPL7250

6 Samples

Download data: BEDGRAPH, CEL

(Submitter supplied) The information stored in the DNA of a cell’s chromosomes is transmitted to the rest of the cell by transcribing the DNA into RNA copies or “transcripts”. The fidelity of this process, and thus the health of the cell, depends critically on the proper function of proteins that direct transcription. Since hundreds of genes, each specifying a unique RNA transcript, are arranged in tandem along each chromosome, the beginning and end of each gene must be marked in the DNA sequence. more...

Organism:

Saccharomyces cerevisiae

Type:

Expression profiling by genome tiling array

Platform:

GPL7250

9 Samples

Download data: CEL, WIG

(Submitter supplied) To sustain growth, budding yeast actively transcribes its ribosomal gene array (rDNA) in the nucoleolus to produce ribosomes and proteins. However, intense transcription during rDNA replication may provoke collisions between RNA polymerase I (Pol I) and the replisome, may cause replication fork instability, double-strand breaks, local recombinations and rDNA instability. The latter is manifested by rDNA array expansion or reduction and the formation of extrachromosomal rDNA circles, anomalies that accelerate aging in yeast. more...

Organism:

Saccharomyces cerevisiae

Type:

Genome binding/occupancy profiling by genome tiling array

Platform:

GPL7250

6 Samples

Download data: BED, CEL

(Submitter supplied) The Mre11-Rad50-Xrs2 (MRX) complex is related to SMC complexes that form rings capable of holding two distinct DNA strands together. MRX functions at stalled replication forks and double-strand breaks (DSB). A mutation in the N-terminal OB-fold of the 70-kD subunit of yeast replication protein A, rfa1-t11, abrogates MRX recruitment to both types of damage. The rfa1 mutation is functionally epistatic with loss of any of the MRX subunits for survival of replication fork stress or DSB recovery, although it does not compromise end resection. more...

Organism:

Saccharomyces cerevisiae

Type:

Genome binding/occupancy profiling by genome tiling array

Platform:

GPL7250

2 Samples

Download data: BAR, CEL

(Submitter supplied) Nucleosome assembly in vivo requires assembly factors, such as histone chaperones, to bind to histones and mediate their deposition onto DNA. In yeast, the essential histone chaperone FACT (FAcilitates Chromatin Transcription) functions in nucleosome assembly and H2A-H2B deposition during transcription elongation and DNA replication. Recent studies have identified candidate histone residues that mediate FACT binding to histones, but it is not known which histone residues are important for FACT to deposit histones onto DNA during nucleosome assembly. more...

Organism:

Saccharomyces cerevisiae

Type:

Genome binding/occupancy profiling by genome tiling array

Platform:

GPL7250

6 Samples

Download data: CEL, WIG