Project description:We determined DNA-binding sites of the yeast transcription factor Yfl052w by ChIP-exo. Cells were grown in the YP media containing palatinose. Yfl052w was tagged with HA tag and anti-HA antibody was used for the immunoprecipitation. Examination of Yfl052 trancription factor in HA-tagged and wt cells (as a control)
Project description:We determined DNA-binding sites of the yeast transcription factor Yfl052w by ChIP-exo. Cells were grown in the YP media containing palatinose. Yfl052w was tagged with HA tag and anti-HA antibody was used for the immunoprecipitation. Examination of Yfl052 trancription factor in HA-tagged and wt cells (as a control)
Project description:These ChIP-exo data were used to validate the predictions from our live-cell single-molecule imaging experiment The ChIP-exo mapping of ultra-fine localization of endogenous Sox2, halo-Sox2, and two halo-Sox2 mutants (halo-Sox2M and halo-Sox2D) in embryonic stem cells.
Project description:Mapping ultra-high resolution of Sp1:DNA interaction would provide us with valuable new mechanistic insights into Sp1-mediated gene regulatory network in Huntington Disease cell culture model. STHdh Q7/Q7 cells were directly fixed and used for the ChIP-exo experiment.
Project description:Mapping ultra high resolution of Brachyury:DNA interaction would provide us with valuable new mechanistic insights into complex molecular transactions at Brachyury-bound enhancers. Embryonic stem cells were differentiated into Brachyury-positive mesoendoderm cells. And, ChIP-exo experiment was then performed to identify detailed Brachyury-DNA binding profiles.
Project description:This study involves the role of yeast mRNA decay factors in transcription. The experiment included here are the ChIP-exo results of three decay factors: Xrn1, Dcp2 & Lsm1. Four experiments were made: Xrn1, Dcp2, Lsm1 and control (no-TAP tag), in two replicates.
Project description:Circadian and metabolic physiology are intricately intertwined, as illustrated by Rev-erb , a transcription factor (TF) that functions both as a core repressive component of the cell autonomous clock and as a regulator of metabolic genes. Here we show that Rev-erb modulates the clock and metabolism by different genomic mechanisms. Clock control requires Rev-erb to bind directly to the genome at its cognate sites, where it competes with activating ROR TFs. By contrast, Rev-erb regulates metabolic genes primarily by recruiting the HDAC3 corepressor to sites to which it is tethered by cell type-specific transcription factors. Thus, direct competition between Rev-erb and ROR TFs provides a universal mechanism for self-sustained control of molecular clock across all tissues, whereas Rev-erb utilizes lineage-determining factors to convey a tissue-specific epigenomic rhythm that regulates metabolism tailored to the specific need of that tissue. Biological replicates were uploaded in separated files and indicated in the file names.
Project description:DNA methylation is essential for silencing transposable elements and some genes in higher eukaryotes, implying that this modification must be tightly controlled. However, accidental changes in DNA methylation can be transmitted through mitosis, as in cancer, or meiosis, leading to epiallelic variation. Here, we demonstrate the existence of an efficient and faithful mechanism that protects against transgenerational loss of DNA methylation in the plant Arabidopsis. This process is specific to the subset of heavily methylated genomic repeats that are targeted by the RNAi machinery, and does not spread into flanking regions. Remethylation is often progressive over two to four sexual generations. This differential and incremental correction of epigenetic defects may preserve genome stability while increasing adaptive opportunities. 2 samples examined: wild type, and ddm1 mutant.
Project description:The genomic distribution of transcriptionally engaged Pol II in control and heat shocked cells was determined by combining formaldehyde crosslinking and permanganate oxidation of transcription bubbles Cells treated in succession with formaldehyde and then permanganate, were subjected to chromatin precipitation with Rpb3 antibody, and then the pattern of permanganate modifications were mapped genome-wide