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Widespread non-modular overlapping codes in the coding regions.

Shaked Bergman1, Tamir Tuller1,2,3

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This summary is machine-generated.

The open reading frame (ORF) in messenger RNAs (mRNAs) contains regulatory codes beyond just amino acid sequences. These overlapping codes influence gene expression, protein folding, and mRNA stability, ensuring precise protein production.

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Area of Science:

  • Molecular Biology
  • Genetics
  • Biochemistry

Background:

  • Messenger RNAs (mRNAs) comprise coding (open reading frame, ORF) and untranslated regions (UTRs).
  • Traditionally, the ORF was considered solely for amino acid encoding, with regulatory functions assigned to UTRs and other genomic areas.
  • Recent findings reveal extensive regulatory signals within the ORF itself.

Purpose of the Study:

  • To review current knowledge on overlapping regulatory codes within mRNA ORFs.
  • To highlight the multifaceted roles of the ORF in gene expression and cellular processes.

Main Methods:

  • Literature review of recent research on ORF regulatory codes.
  • Synthesis of findings related to synonymous codon usage, translation speed, protein folding, ribosomal frameshifting, mRNA stability, methylation, splicing, and transcription.

Main Results:

  • The ORF is densely populated with diverse regulatory signals, or codes.
  • Synonymous codon usage impacts translation speed, affecting protein folding.
  • ORFs also influence mRNA stability, splicing, methylation, transcription, and ribosomal frameshifting.

Conclusions:

  • Overlapping codes within the ORF are integral to gene expression regulation.
  • These codes collectively ensure the timely and accurate production of proteins.
  • The ORF plays a more complex regulatory role than previously understood.