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An Integrated Approach for Microprotein Identification and Sequence Analysis
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Eukaryotic Microproteins.

Nadiya Jaunbocus1,2, Valerie Ebenki1,2, Haomiao Su1,2

  • 1Department of Chemistry, Yale University, New Haven, Connecticut, USA;

Annual Review of Biochemistry
|April 17, 2025
PubMed
Summary
This summary is machine-generated.

Microproteins, small proteins missed by genome annotation, are numerous and vital in human cells. Their discovery and functions in health and disease are rapidly advancing.

Keywords:
microproteinsmORFsmall open reading frame

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Area of Science:

  • Biochemistry and Molecular Biology
  • Genomics
  • Cellular Biology

Background:

  • Microproteins are small polypeptides (<150 amino acids) often missed by traditional genome annotation due to their size and properties.
  • Thousands of microproteins are translated from the human genome, playing roles in essential cellular and physiological functions.
  • Dysregulation or mutation of microproteins is implicated in diseases like neurodegeneration and cancer.

Purpose of the Study:

  • To review the current knowledge on eukaryotic microprotein discovery.
  • To summarize the characteristics of small open reading frames (sORFs) and their expression.
  • To discuss the known functions of microproteins across different species, from yeast to humans.

Main Methods:

  • Review of existing literature and recent advancements in the field of microprotein research.
  • Focus on discoveries enabled by ribosome profiling techniques.
  • Synthesis of information regarding sequence, expression, and functional data.

Main Results:

  • Global discovery of microproteins has accelerated significantly in the last 15 years.
  • Microproteins are involved in critical cellular pathways and physiological processes.
  • Evidence links microprotein dysregulation to various human diseases.

Conclusions:

  • Microproteins represent a significant and functionally important class of proteins.
  • Continued research into microproteins is crucial for understanding fundamental biology and disease mechanisms.
  • The field of microprotein research is dynamic and rapidly expanding.