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Related Concept Videos

Alternative RNA Splicing02:18

Alternative RNA Splicing

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Alternative RNA splicing is the regulated splicing of exons and introns to produce different mature mRNAs from a single pre-mRNA. Unlike in constitutive splicing where a single gene produces a single type of mRNA, alternative splicing allows an organism to produce multiple proteins from a single gene and plays an important role in protein diversity.
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
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RNA Splicing01:32

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Splicing is the process by which eukaryotic RNA is edited before its translation into protein. The RNA strand transcribed from eukaryotic DNA is called the primary transcript. The primary transcripts that become mRNAs are called precursor messenger RNAs (pre-mRNAs). Eukaryotic pre-mRNA contains alternating sequences of exons and introns. Exons are nucleotide sequences that code for proteins, whereas introns are the non-coding regions. In RNA splicing, introns are removed and exons are bonded...
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Exon Recombination02:32

Exon Recombination

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The evolution of new genes is critical for speciation. Exon recombination, also known as exon shuffling or domain shuffling, is an important means of new gene formation. It is observed across vertebrates, invertebrates, and in some plants such as potatoes and sunflowers. During exon recombination, exons from the same or different genes recombine and produce new exon-intron combinations, which might evolve into new genes. 
Exon shuffling follows “splice frame rules.” Each exon...
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Related Experiment Video

Updated: Apr 27, 2026

Quantitative Analysis of Alternative Pre-mRNA Splicing in Mouse Brain Sections Using RNA In Situ Hybridization Assay
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Alternative splicing in Drosophila neuronal development.

Carmen Mohr1, Britta Hartmann

  • 1Institute of Human Genetics, University Medical Center Freiburg , Freiburg , Germany.

Journal of Neurogenetics
|June 25, 2014
PubMed
Summary

Alternative splicing (AS) is crucial for gene expression and proteome diversity, impacting development and causing genetic diseases. This study highlights AS

Keywords:
Alternative splicingDrosophilaneurogenesispost-transcriptional regulation

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Area of Science:

  • Molecular Biology
  • Developmental Biology
  • Genetics

Background:

  • Post-transcriptional pre-mRNA splicing is a key regulatory step in gene expression.
  • Alternative splicing (AS) influences proteome diversification and spatiotemporal control in development.
  • Deregulation of AS is linked to numerous genetic diseases.

Purpose of the Study:

  • To highlight the critical role of alternative splicing in neuronal development.
  • To emphasize the high transcriptome diversity in the brain.
  • To underscore the increasing knowledge of AS regulation and function in Drosophila.

Main Methods:

  • Review of existing literature on alternative splicing.
  • Analysis of gene expression data in Drosophila.
  • Focus on neuronal development processes.

Main Results:

  • Over 95% of human genes and 60% of Drosophila genes undergo alternative splicing.
  • The brain exhibits the highest transcriptome diversity.
  • Increasing reports detail the function and regulation of AS isoforms in Drosophila nervous system development.

Conclusions:

  • Alternative splicing is essential for complex biological processes, particularly neuronal development.
  • Understanding AS in model organisms like Drosophila provides insights into human development and disease.
  • Further research into AS mechanisms is vital for understanding gene regulation and disease pathology.