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DNA Adenine Methyltransferase Identification (DamID) Coupled to Next Generation Sequencing For Profiling Lamina Associated Domains

ABSTRACT: DNA Adenine Methyltransferase Identification (DamID) Coupled to Next Generation Sequencing For Profiling Lamina Associated Domains

PROVIDER: PRJNA526868 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR8719735.fastq.gz	Fastqsanger.gz
	SRR8719736.fastq.gz	Fastqsanger.gz
	SRR8719737.fastq.gz	Fastqsanger.gz

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DNA Adenine Methyltransferase Identification (DamID) Coupled to Next Generation Sequencing For Profiling Lamina Associated Domains

Project description:Purpose: To compare the interaction of various proteins (in particular Lap2b and Lamin A) at the nuclear periphery with the Lamina Associated Domains (LADs) Results: Using an optimized data analysis workflow (LADetector, available at https://github.com/thereddylab/LADetector), We found near identical sequences within the genome-wide maps indicating that LAP2β and Lamin A, and hence LaminB1, are in close proximity to all LADs, suggesting that these proteins are not involved in discriminating subsets of LADs.

2019-11-01 | GSE128239 | GEO

DamID LaminB1 data in mouse MEFs, wild-type and POU2F1-/-. DamID LaminA data in mouse Neural Precursor Cells and Astrocytes.

2012-10-10 | E-GEOD-36132 | biostudies-arrayexpress

DamID LaminB1 data in mouse MEFs, wild-type and POU2F1-/-. DamID LaminA data in mouse Neural Precursor Cells and Astrocytes.

Project description:DamID LaminB1 data were generated in POU2F1-/- MEFs to study the potential role of POU2F1/Oct1 in genome - nuclear lamina interactions. DamID LaminA data were generated in NPCs and Astrocytes to study similarities/differences between LaminA and LaminB1 binding. The procedure to arrive at the provided Hidden Markov Model (HMM) state calls is as follows: We fitted a two-state HMM whereby emissions are distributed as Student's t variables. Mean and variance of DamID signals differ between states, but the degree of freedom (nu) is the same. Gaps in the probe coverage were filled by evenly spaced null probe-values. The parameters were estimated by an adaptation of the ECME algorithm to the HMM framework, showing faster convergence than regular EM when nu is unknown (Filion et al., Cell, 2010). State calls were derived through the Viterbi algorithm. This process was repeated separately for each cell type, yielding per-probe calls. Probes in the ‘bound’ (1) state are indicated as LAD-probes, probes in the ‘unbound’ (0) state as inter-LAD-probes.

2012-10-10 | GSE36132 | GEO

Effects of transcription on genome - nuclear lamina interactions: DamID-seq data

Project description:In mammalian nuclei, transcriptionally active genomic regions tend to localize to the interior of the nucleus while inactive regions are often located at at the nuclear lamina. In this study we activated specific genes in lamina-associated domains by TALE-VP64 or CRISPRa-mediated activation. We also reduced transcription of individual genes by knockout of promoter/enhancer regions, or by insertion of a transcription termination sequence. In each case we generated genome-wide DamID maps to determine changes in nuclear lamina interactions, and in selected cases we also generated Repli-seq maps and/or RNAseq data.

2019-06-28 | GSE133272 | GEO

Genome-wide DNA-binding analysis for Stat92E in Drosophila testis by DamID

Project description:Purpose: Genome-wide DNA-binding analysis for Stat92E in Drosophila testis cyst cells by DNA adenine methyltransferase identification(DamID).Methods: DNA adenine methyltransferase identification (DamID) on Stat92E driven by c587Gal4ts;hopTum-l

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Genome-wide DNA-binding analysis for Stat92E and escargot(esg) in Drosophila testis by DamID

Project description:Purpose: Genome-wide DNA-binding analysis for Stat92E and escargot(esg) in Drosophila testis cyst cells by DNA adenine methyltransferase identification(DamID).Methods: DNA adenine methyltransferase identification (DamID) on Stat92E and escargot(esg) driven by c587Gal4ts

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Genome-wide DNA-binding analysis for E(spl)m8 in intestinal stem cells by DamID

Project description:Purpose: Genome-wide DNA-binding analysis for E(spl)m8 in intestinal stem cells in Drosophila midgut by DNA adenine methyltransferase identification(DamID) Methods: DNA adenine methyltransferase identification (DamID) on E(spl)m8 driven by Dl-Gal4 Results:

2018-02-02 | GSE102568 | GEO

A lamina-associated domain border governs nuclear lamina interactions, transcription and recombination of the Tcrb locus [DamID]

Project description:Tcrb locus V(D)J recombination is regulated by positioning at the nuclear periphery. Here we used DamID to profile Tcrb locus interactions with the nuclear lamina at high-resolution. We identified a lamina-associated domain (LAD) border composed of several CTCF binding elements that segregates active non-LAD from inactive LAD regions of the locus. Deletion of the LAD border caused an enhancer-dependent spread of H3K27ac from the active recombination center into recombination center-proximal LAD chromatin. This was associated with a disruption to LAD organization, increased chromatin looping to the recombination center, and increased transcription and recombination of recombination center-proximal gene segments. Our results show that a Tcrb locus LAD and LAD border are critical components of Tcrb locus gene regulation and suggest that LAD borders may generally function to constrain the activity of nearby enhancers.

2018-10-22 | GSE116953 | GEO

Identification of Chromatin proteins involved in gene repression in lamina-associated domains (pA-DamID)

Project description:Lamina-associated domains (LADs) are large chromatin regions that are associated with the nuclear lamina and form a repressive environment for transcription. The molecular players that mediate gene repression in LADs are currently unknown. Here we performed a full-genome genetic screen in human cells using LAD-integrated fluorescent reporters to identify such regulators. Surprisingly, the screen identified very few lamina proteins, but revealed roles for dozens of known chromatin regulators. Among these are the negative elongation factor (NELF) complex and interacting factors, suggesting that regulation of RNA polymerase pausing can be a mechanism to repress transcription in LADs. Furthermore, the chromatin remodeler complex BAF and the activation complex Mediator can work both as activators and repressors in LADs, depending on the local context and possibly rewiring of heterochromatin. Our data suggest that fundamental regulatory steps of the transcription process and chromatin remodeling, rather than interaction with NL proteins, have a major role in the regulation of transcription in LADs.

2024-07-10 | GSE261868 | GEO

Genome-wide DNA-binding analysis for Sox100B in intestinal stem cells by DamID

Project description:Purpose: Genome-wide DNA-binding analysis for Sox100B in intestinal stem cells in Drosophila midgut by DNA adenine methyltransferase identification(DamID) Methods: DNA adenine methyltransferase identification (DamID) on Sox100B driven by ESG-Gal4 Results: 5046 significant genomic binding sites, corresponding to 3182 genes were identified via iDamID following Sox100B overexpression in progenitor cells compared to WT. About a third of these genes were in the list of significantly altered genes following Sox100B overexpression and/or depletion.

2020-05-18 | GSE130304 | GEO

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