Identification of target genes of ABI3
Ontology highlight
ABSTRACT:
ORGANISM(S): Arabidopsis thaliana
SUBMITTER: Gudrun Moenke
PROVIDER: E-GEOD-34043 | biostudies-arrayexpress |
REPOSITORIES: biostudies-arrayexpress
Similar Datasets
Project description:ABI3 is a key regulator of seed development in Arabidopsis and other plants.To identify DNA fragments (promoters) bound by ABI3 we performed array based ChIP analysis. Five ChIP-chip experiments were performed with chromatin of seeds of Arabidopsis and an anti-ABI3 antibody directed against a N-terminal fragment of ABI3, raised in rabbits. Non precipitated chromatin (input) served as control.
2012-05-31 | E-GEOD-34041 | biostudies-arrayexpress
Project description:ABI3 is a key regulator of seed development in Arabidopsis and other plants.To identify DNA fragments(promoters) bound by ABI3 we performed array based ChIP analysis. Two ChIP experiments were performed with chromatin of seeds of Arabidopsis and an anti-ABI3 antibody directed against a N-terminal fragment of ABI3, raised in rabbits. Non precipitated chromatin (input) served as control.
2012-05-31 | E-GEOD-34033 | biostudies-arrayexpress
Project description:ABI3 is a key regulator of seed development in Arabidopsis and other plants.To identify genes regulated by ABI3 we performed array based transcriptome analysis of Dexamethasone inducible ABI3 transgenic seedlings. ABI3 mostly in concert with abscisic acid (ABA) was found to activate genes specifically expressed during the maturation phase of seed development. Two weeks old wildtype and 35S::ABI3::GR seedlings were treated with ABA, Dexamethasone (DEX) and ABA plus Dexamethasone for 4 h. Two biological independent experiments were performed. Wildtype was induced to control for DEX-induction of genes.
2012-05-31 | E-GEOD-33951 | biostudies-arrayexpress
Project description:The structure of chromatin is critical for many aspects of cellular physiology and is considered to be the primary medium to store epigenetic information. It is defined by the histone molecules that constitute the nucleosome, the positioning of the nucleosomes along the DNA and the non-histone proteins that associate with it. These factors help to establish and maintain a largely DNA sequence-independent but surprisingly stable structure. Chromatin is extensively disassembled and reassembled during DNA replication, repair, recombination or transcription in order to allow the necessary factors to gain access to their substrate. Despite such constant interference with chromatin structure, the epigenetic information is generally well maintained. Surprisingly, the mechanisms that coordinate chromatin assembly and ensure proper assembly are not particularly well understood. Here, we use SWATH-MS to describe the kinetics of in vitro assembled chromatin supported by an embryo extract prepared from preblastoderm Drosophila melanogaster embryos. This system allows easy manipulation of distinct aspects of chromatin assembly such as post-translational histone modifications, the levels of histone chaperones and the concentration of distinct DNA binding factors. Our findings support the idea that chromatin assembly factors and factors important for chromatin structure bind chromatin in an ordered manner, which is -at least in part- regulated by histone deacetylation. We are able to identify functional clusters of proteins based on their different binding kinetics. Whereas many proteins bind exclusively during the onset of chromatin assembly, a few proteins show a clear tendency towards matured chromatin.
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Project description:Sall4 is a stem cell factor which is important for embryogenesis. We have genetically modified Sall4 in mouse embryonic stem cells to access the preference of Sall4 binding site. There are three different genetic modifications for the ES cells in the form of Sall4 Knockout (KO), Sall4 Zinc Finger Cluster 4 Mutation (ZFC4mut) and Sall4 Zinc Finger Cluster 1-2 Deletion (ZFC1-2Δ) respectively that we have considered for our study.
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2019-03-13 | PXD011670 | Pride
Project description:Microarray experiments of the abi3 seeds were performed by analyzing the samples obtained from two different alleles (both for wild-type and mutant).For the analysis of gene expression profiles in abi3-1 seeds, RNA from Ler seeds was used. For the analysis of gene expression profiles in abi3-6 seeds, RNA from Col seeds was used.
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Project description:Chromatin organization must be maintained during cell proliferation to preserve cellular identity and genome integrity. However, DNA replication results in transient displacement of DNA bound proteins, and it is unclear how they regain access to newly replicated DNA. Using quantitative MS-based proteomics coupled to Nascent Chromatin Capture, we provide time resolved binding kinetics for thousands of proteins behind replisomes of mid-S replicated regions. This shows that most proteins regain access within the first 15 minutes after the passage of the fork. In contrast, 25% of the identified proteins do not, and this delay cannot be inferred from their known function, physicochemical properties, or nuclear abundance. A sample treated with nocodazole to block the cell cycle progression. The comparison between a normal cell cycle progression and a nocodazole treated sample shows that the reassociation onto chromatin of proteins with a delayed restoration can be regulated by the cell cycle progression and/or the post-replication time. In addition, we provide evidence that DNA replication not only disrupts but also promotes recruitment of transcription factors and chromatin remodellers, providing a significant advance in understanding how DNA replication could contribute to programmed changes of cell memory. Data available in this entry are related with the supplementary table 5 from our manuscript.
2023-02-02 | PXD038113 | Pride
Project description:Chromatin organization must be maintained during cell proliferation to preserve cellular identity and genome integrity. However, DNA replication results in transient displacement of DNA bound proteins, and it is unclear how they regain access to newly replicated DNA. Using quantitative MS-based proteomics coupled to Nascent Chromatin Capture, we provide time resolved binding kinetics for thousands of proteins behind replisomes within euchromatin and heterochromatin in human cells. This shows that most proteins regain access within the first 15 minutes after the passage of the fork. In contrast, 30% of the identified proteins do not, and this delay cannot be inferred from their known function, physicochemical properties, or nuclear abundance. Instead, differential chromatin organization affect their reassociation. We provide evidence that DNA replication not only disrupts but also promotes recruitment of transcription factors and chromatin remodellers, providing a significant advance in understanding how DNA replication could contribute to programmed changes of cell memory.We include here a reference to link the data with our manuscript:Tables SUPP1 and SUPP2:NCC data: PT7988 (Bio-rep1), PT8242 (Bio-rep2), PT8243 (Bio-rep3). 1-24 (24 high-pH RPLC fractions from TMT labeled peptides)Nuclear fraction data: PT7988 (Bio-rep1), PT8242 (Bio-rep2), PT8243 (Bio-rep3). 25-48 (24 high-pH RPLC fractions from TMT labeled peptides)Tables SUPP3-5:NCC data: PT9825 (Bio-rep1), PT9825 (Bio-rep2), PT9825 (Bio-rep3). (11-34, 35-58, 59-82) (24 high-pH RPLC fractions from TMT labeled peptides)Nuclear fraction data: PT9825 (Bio-rep1), PT9825 (Bio-rep2), PT9825 (Bio-rep3). (83-106, 107-130, 131-154). (24 high-pH RPLC fractions from TMT labeled peptides)
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