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Related Concept Videos

Regulation of Expression at Multiple Steps01:23

Regulation of Expression at Multiple Steps

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The gene expression in cells is regulated at different stages: (i) transcription, (ii) RNA processing, (iii) RNA localization, and (iv) translation. Transcriptional regulation is mediated by regulatory proteins such as transcription factors, activators, or repressors—these control gene expression by initiating or inhibiting the transcription of genes. Once a precursor or pre-mRNA is produced, it undergoes post-transcriptional modification, including 5' capping, splicing, and the...
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Regulation of Expression Occurs at Multiple Steps02:24

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Gene expression can be regulated at almost every step from gene to protein. Transcription is the step that is most commonly regulated. This involves the binding of proteins to short regulatory sequences on the DNA. This association can either promote or inhibit the transcription of a gene associated with the respective sequence.
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Combinatorial Gene Control02:33

Combinatorial Gene Control

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Combinatorial gene control is the synergistic action of several transcriptional factors to regulate the expression of a single gene. The absence of one or more of these factors may lead to a significant difference in the level of gene expression or repression.
The expression of more than 30,000 genes is controlled by approximately 2000-3000 transcription factors. This is possible because a single transcription factor can recognize more than one regulatory sequence. The specificity in gene...
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Regulated mRNA Transport02:22

Regulated mRNA Transport

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In eukaryotes, transcription and translation are compartmentalized; an mRNA is first synthesized in the nucleus and then selectively transported to the cytoplasm for protein synthesis. Before transport, a pre-mRNA undergoes several steps of post-transcriptional modifications including splicing, 5' capping, and the addition of a poly-adenine tail. Various proteins bind to the pre-mRNA during these modifications. The mRNA transport takes place with the help of multiple proteins playing...
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Epigenetic Regulation01:37

Epigenetic Regulation

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Epigenetic changes alter the physical structure of the DNA without changing the genetic sequence and often regulate whether genes are turned on or off. This regulation ensures that each cell produces only proteins necessary for its function. For example, proteins that promote bone growth are not produced in muscle cells. Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
X-chromosome...
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Organization of Genes02:07

Organization of Genes

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Mapping Alzheimer's Disease Variants to Their Target Genes Using Computational Analysis of Chromatin Configuration
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Mapping the brain's gene-regulatory maze.

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  • 1Institute of Science and Technology Austria (ISTA), Klosterneuburg, Austria.

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DNA sequences link to specific genes and their functions within the brain. This connection is crucial for both brain development and adult brain function.

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Area of Science:

  • Neuroscience
  • Genetics
  • Molecular Biology

Background:

  • Understanding the relationship between DNA sequences and brain function is essential for neuroscience research.
  • The developing and adult brain exhibit complex gene expression patterns.
  • Identifying specific DNA sequences linked to neural functions is a key challenge.

Discussion:

  • This study explores the direct connections between DNA sequences and the genes they encode.
  • The research investigates how these genetic elements influence the functions of the developing and adult brain.
  • Findings highlight the importance of specific DNA regions in neural processes.

Key Insights:

  • Established a clear link between DNA sequences and their corresponding genes.
  • Demonstrated the role of these genetic components in brain development and adult function.
  • Provided a foundation for understanding gene-environment interactions in the brain.

Outlook:

  • Future research can leverage these findings to explore neurological disorders at a genetic level.
  • This work may pave the way for targeted gene therapies for brain conditions.
  • Further studies can elucidate the precise mechanisms by which DNA sequences regulate brain function.