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Poor codon optimality as a signal to degrade transcripts with frameshifts

Miquel Àngel Schikora-Tamarit1, Lucas B Carey1

  • 1a Systems Bioengineering Program, Department of Experimental and Health Sciences , Universitat Pompeu Fabra , Barcelona , Spain.

Transcription
|August 15, 2018
PubMed

Insights

Nonsense-mediated decay (NMD) and codon-usage decay work together to eliminate faulty mRNA transcripts caused by frameshifting errors. This study provides computational evidence for the synergistic action of these pathways in mRNA quality control.

Area of Science:

  • Molecular Biology
  • Genetics
  • Computational Biology

Background:

  • Frameshifting errors frequently occur during translation, producing aberrant messenger RNA (mRNA) transcripts.
  • Cellular quality control mechanisms, including nonsense-mediated decay (NMD), are essential for degrading these faulty transcripts.
  • Emerging evidence suggests a connection between NMD and codon-usage-mediated mRNA decay.

Purpose of the Study:

  • To investigate the synergistic relationship between NMD and codon-usage mediated decay in the context of frameshifted transcripts.
  • To provide computational evidence supporting the combined action of these mRNA decay pathways.

Main Methods:

  • Utilized computational analysis to model and assess mRNA decay pathways.
  • Examined the interplay between nonsense-mediated decay and codon-usage effects on frameshifted mRNA stability.

Main Results:

  • Presented computational evidence demonstrating that NMD and codon-usage mediated decay act synergistically.
  • The combined action of these pathways is more effective in degrading frameshifted transcripts than either pathway alone.

Conclusions:

  • Nonsense-mediated decay and codon-usage mediated decay are synergistic pathways for the efficient removal of frameshift errors.
  • This synergy enhances the fidelity of gene expression by eliminating aberrant mRNA transcripts.
Keywords:
Nonsense-mediated decaycodon biasframeshiftsmRNA qualitytranslation

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