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Related Experiment Video

Updated: Aug 28, 2025

iCLIP - Transcriptome-wide Mapping of Protein-RNA Interactions with Individual Nucleotide Resolution
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Widespread autogenous mRNA-protein interactions detected by CLIP-seq.

Thomas H Kapral1,2, Fiona Farnhammer1,3,4, Weihao Zhao5

  • 1Departmet of Structural and Computational Biology, Max Perutz Labs, University of Vienna, Vienna, A-1030, Austria.

Nucleic Acids Research
|September 15, 2022
PubMed
Summary
This summary is machine-generated.

RNA-binding proteins (RBPs) commonly interact with their own mRNAs, a widespread phenomenon across organisms. This autogenous interaction, favored by intrinsic affinities, plays a key role in cellular regulation.

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Area of Science:

  • Molecular Biology
  • Genetics
  • Biochemistry

Background:

  • Autogenous interactions between mRNAs and encoded proteins are suggested in cellular feedback regulation but lack clear mechanistic understanding.
  • A hypothesis posits these interactions are common, influenced by inherent nucleobase-amino acid affinities shaping the genetic code.
  • The full extent and mechanisms of these autogenous interactions remain largely undefined.

Purpose of the Study:

  • To comprehensively analyze the prevalence and significance of autogenous interactions between RNA-binding proteins (RBPs) and their own mRNAs.
  • To investigate the mechanistic underpinnings and statistical validity of these interactions, considering various confounding factors.
  • To explore the relationship between intrinsic nucleobase-amino acid affinities and autogenous binding patterns.

Main Methods:

  • Analysis of a large dataset from multiple CLIP-seq experiments across diverse organisms.
  • Statistical validation using null distributions to assess the significance of observed interactions.
  • Investigation of factors influencing autogenous binding, including RBP motifs, structured domains, and experimental variables.

Main Results:

  • Widespread autogenous interactions were observed, with 67% of studied RBPs interacting with their own mRNAs.
  • Interactions showed enrichment among high-confidence hits and a preference for binding within coding sequences.
  • Statistical analysis confirmed the high significance of these autogenous interactions, independent of confounding factors.

Conclusions:

  • Autogenous interactions between RBPs and their mRNAs are a prevalent regulatory mechanism across species.
  • Intrinsic nucleobase-amino acid affinities likely contribute to the observed co-aligned binding patterns.
  • These findings suggest a fundamental link between genetic coding and protein-RNA binding in cellular regulation.