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Related Concept Videos

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Related Experiment Video

Updated: Jul 31, 2025

De novo Identification of Actively Translated Open Reading Frames with Ribosome Profiling Data
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Small open reading frames: a comparative genetics approach to validation.

Niyati Jain1,2, Felix Richter3, Ivan Adzhubei4,5

  • 1Department of Genetics and Genomic Sciences and Mindich Child Health and Development Institute, Icahn School of Medicine at Mount, Hess Center for Science and Medicine, 1470 Madison Avenue, New York, NY, 10029, USA.

BMC Genomics
|May 1, 2023
PubMed
Summary
This summary is machine-generated.

Thousands of small open reading frames (smORFs) in the human genome encode micropeptides. This study identified 3,326 high-confidence smORFs, revealing their conservation and enrichment in disease-associated variants, suggesting crucial roles in human health.

Keywords:
Comparative geneticsEvolutionary conservationHuman genetic variationMicropeptidesSmall open reading frames

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Area of Science:

  • Genomics
  • Human Genetics
  • Molecular Biology

Background:

  • Small open reading frames (smORFs) encoding micropeptides are often unannotated despite evidence of their existence.
  • The precise number and biological significance of human smORFs and their encoded peptides remain largely unknown.

Purpose of the Study:

  • To identify high-confidence, protein-coding smORFs in the human genome.
  • To investigate the evolutionary conservation and functional relevance of smORF-encoded peptides.

Main Methods:

  • Comparative genomics approach utilizing population constraint and evolutionary conservation.
  • Validation of amino-acid level conservation for identified smORFs.
  • Analysis of smORF enrichment in genome-wide association study (GWAS) disease-associated variants.

Main Results:

  • Identification of 3,326 high-confidence smORFs.
  • Demonstration of amino-acid level conservation, distinguishing them from conserved non-coding regions.
  • Significant enrichment of high-confidence smORFs among disease-associated variants.

Conclusions:

  • smORFs represent a significant, previously underappreciated component of the human genome.
  • smORF-encoded peptides are evolutionarily conserved and functionally relevant.
  • These micropeptides play important roles in human disease, warranting further investigation.