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Investigating Interactions Between Histone Modifying Enzymes and Transcription Factors in vivo by Fluorescence Resonance Energy Transfer
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uORFs: Important Cis-Regulatory Elements in Plants.

Ting Zhang1, Anqi Wu1, Yaping Yue1

  • 1National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, China.

International Journal of Molecular Sciences
|September 3, 2020
PubMed
Summary
This summary is machine-generated.

Upstream open reading frames (uORFs) regulate gene expression by controlling translation initiation. Understanding uORF function in plants offers new ways to improve crop traits and environmental adaptation.

Keywords:
disease resistancemetabolic pathwaysmorphogenesisnutrient absorptionplant breedingtranslational regulationuORFs

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Area of Science:

  • Molecular Biology
  • Genetics
  • Plant Science

Background:

  • Gene expression is regulated at multiple levels, with mRNA translation being a critical control point for rapid protein concentration changes.
  • Translation initiation is the rate-limiting step in protein synthesis and is tightly regulated by cis-acting elements and trans-acting factors.
  • Upstream open reading frames (uORFs) are cis-regulatory elements in eukaryotic mRNAs that typically inhibit translation initiation of downstream main ORFs (mORFs) via ribosome stalling.

Purpose of the Study:

  • To review the identification, classification, and mechanisms of uORF-mediated translation initiation.
  • To summarize the roles of uORFs in regulating plant metabolic pathways, morphogenesis, disease resistance, and nutrient absorption.
  • To discuss the potential applications of uORFs in plant breeding and precisely modulating plant growth and development.

Main Methods:

  • Utilizing advancements in RNA sequencing (RNA-seq) and ribosome profiling to identify and characterize functional uORFs.
  • Reviewing existing literature on uORF identification and classification across various organisms.
  • Analyzing the impact of uORFs on plant biological processes and environmental adaptation.

Main Results:

  • Functional uORFs have been identified and characterized in numerous organisms, including plants.
  • uORFs play significant roles in regulating diverse plant processes such as metabolism, development, and stress responses.
  • uORF-mediated translational control provides a mechanism for fine-tuning protein synthesis.

Conclusions:

  • uORFs are crucial regulators of translation initiation, impacting various aspects of plant biology.
  • Understanding uORF mechanisms opens avenues for precise modulation of plant growth, development, and environmental adaptation.
  • uORFs hold promise for future applications in plant breeding to enhance crop performance.