Ontology highlight
ABSTRACT:
PROVIDER: PRJEB27364 | ENA |
REPOSITORIES: ENA
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Project description:Here we report that the spatial organization of yeast tRNA genes depends upon both locus position and tRNA identity; supporting the idea that the genomic organization of tRNA loci utilizes tRNA dependent signals within the nucleoprotein-tRNA complexes that form into clusters. We use high-throughput sequencing coupled to Circular Chromosome Conformation Capture to detect interactions with two wild type tRNAs and these same positions replaced with suppressor tRNAs (SUP4-1). Detect DNA-DNA interactions (Circular chromosome conformation capture; 4C) with two wild type tRNAs and these same positions replaced with suppressor tRNAs (SUP4-1) Supplementary files: Alignment files generated by Topography v1.19 software.
2012-06-13 | E-GEOD-30103 | biostudies-arrayexpress
Project description:Current methods for analysing chromosome conformation in mammalian cells are either insensitive and low resolution or low throughput. Since the methods are expensive and relatively difficult to perform and analyse they are not widely used outside of specialised laboratories. Here we have re-designed the Capture-C method producing a new approach, called next generation (NG) Capture-C, which solves most of the current setbacks in analysing chromosome conformation. NG Capture-C produces unprecedented levels of sensitivity and reproducibility, which can be used to analyse any number of genetic loci and/or many samples in a single experiment. NG Capture is straightforward to perform, requiring only standard reagents and access to basic next generation sequencing platforms. The complete and detailed protocol presented here, with new publically available tools for library design and data analysis, will allow most laboratories to analyse chromatin conformation at levels of sensitivity and throughput that were previously impossible.
2015-11-16 | GSE67959 | GEO
Project description:Using Circular chromosome conformation capture (4C) assay to uncovers epigenetically regulated intra- and inter-chromosomal interaction network To examine restrictions imposed by the nuclear structure on such cis/trans-chromosomal networks, we developed a high-throughput screening assay 4C and identified 114 different sequences from all autosomes in mouse liver cells. To check the relative frequencies of interactions, the 114 sequences were PCR amplified and spotted on glass to make dedicated microarray. The microarray and 3C validation showed that most of the sequences interact with primarily the maternally inherited H19 imprinting control region (ICR). The epigenetic feature of these interactions was highlighted by the observation that 19% of 4C library sequences are derived from 11 different imprinted domains. In some of these instances, differentially methylated regions (DMRs) interact both in cis and in trans. Moreover, the patterns of chromosomal interactions undergo reprogramming during in vitro maturation of embryonic stem cells. We propose that the nuclear organization of mammalian cells displays considerable plasticity to potentially throw new light on development, cancer epigenetics and evolution of imprinting. Keywords: Chromosome conformation capture, CTCF, ICR(Imprinting Control Region) 4C Assay on MBoI, MSeI, PM-Liv and MM-Liv
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Project description:Purpose: The goals of this study are to investigate the 3D chromatin architecture of cortical neurons in rhesus monkeys treated with morphine for 90 days using digestion-ligation-only high-throughput chromosome conformation capture technology combined with transcriptome profiling (RNA-seq).
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