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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.
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Coupling and coordination in gene expression processes with pre-mRNA splicing.

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RNA splicing and degradation are coupled processes influencing gene expression. This review highlights splicing

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Area of Science:

  • Molecular Biology
  • Gene Regulation
  • RNA Processing

Background:

  • Gene expression involves complex RNA processing pathways, including transcription, splicing, and degradation.
  • Co-transcriptional splicing of RNA polymerase II transcripts is functionally linked to other RNA processing events.
  • Emerging evidence reveals a reciprocal relationship between pre-mRNA splicing and RNA degradation.

Purpose of the Study:

  • To review recent findings on the coupling between RNA splicing and degradation.
  • To highlight the role of splicing in producing intronic microRNAs (miRNAs) and circular RNAs.
  • To discuss novel mechanisms regulating gene expression through these coupled processes.

Main Methods:

  • Literature review of recent experimental findings.
  • Synthesis of evidence on the interplay between splicing and degradation.
  • Analysis of the role of splicing in miRNA and circular RNA biogenesis.

Main Results:

  • Splicing and RNA degradation are functionally coupled processes.
  • Splicing is crucial for the generation of intronic miRNAs.
  • Splicing contributes to the formation of circular RNAs.

Conclusions:

  • The coupling of splicing and degradation represents a key regulatory layer in gene expression.
  • Intronic miRNAs and circular RNAs, regulated by splicing, offer novel mechanisms for gene control.
  • Understanding these interactions is vital for comprehending cellular function and disease.