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The Eukaryotic Promoter Region02:40

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The eukaryotic promoter region is a segment of DNA located upstream of a gene. It contains an RNA polymerase binding site, a transcription start site, and several cis-regulatory sequences.  The proximal promoter region is located in the vicinity of the gene and has cis-regulatory sequences and the core promoter. The core promoter is the binding site for RNA polymerase and is usually located between -35 and +35 nucleotides from the transcription start site. The distal promoter regions are...
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Eukaryotes have large genomes compared to prokaryotes. To fit their genomes into a cell, eukaryotic DNA is packaged extraordinarily tightly inside the nucleus. To achieve this, DNA is tightly wound around proteins called histones, which are packaged into nucleosomes that are joined by linker DNA and coil into chromatin fibers. Additional fibrous proteins further compact the chromatin, which is recognizable as chromosomes during certain phases of cell division.
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Exome-based Variant Detection in Core Promoters.

Yeong C Kim1, Jian Cui1, Jiangtao Luo2

  • 1Department of Genetics, Cell Biology and Anatomy, College of Medicine, Omaha, NE 68198, USA.

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|July 29, 2016
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Summary
This summary is machine-generated.

We developed a new method to detect genetic variations in core promoter regions using exome sequencing data. This tool, EVDC (Exome-based Variant Detection in Core promoters), aids in understanding gene expression and associated diseases.

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Area of Science:

  • Genomics
  • Molecular Biology
  • Bioinformatics

Background:

  • Core promoters regulate gene transcription initiation.
  • Alterations in core promoter sequences can impair gene expression and lead to diseases.
  • Comprehensive characterization of core promoters is crucial for biomedical research.

Purpose of the Study:

  • To develop a novel method for genome-wide analysis of core promoter sequence variation.
  • To characterize core promoter features and analyze variations using exome data.
  • To compare core promoter variations across different human populations.

Main Methods:

  • Developed Exome-based Variant Detection in Core promoters (EVDC) method.
  • Utilized exome sequencing data from CD4+ T cells, CD19+ B cells, and neutrophils.
  • Analyzed core promoter sequences within non-coding regions of exome data.
  • Compared core promoter variations between Yoruba (YRI) and European (CEU) populations using 1000 Genomes Project data.

Main Results:

  • Successfully mapped and analyzed core promoter sequences from exome data.
  • Identified significant core promoter sequence variations within an individual.
  • Observed substantially higher core promoter variation in the YRI population compared to the CEU population.

Conclusions:

  • The EVDC method offers a powerful approach for de novo characterization of core promoter sequence variation.
  • This method facilitates the study of genetic variations impacting gene expression and disease.
  • Findings highlight population-specific differences in core promoter variability.