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Groups of proteins may form a complex where each protein in this complex has a different role in the overall execution of the complex’s function. Often some of the proteins in the complex can be replaced by a closely related variant to give a complex that contains many of the same components yet is functionally distinct.
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How Many Faces Does the Plant U-Box E3 Ligase Have?

Xinguo Mao1, Chunmei Yu1, Long Li1

  • 1The National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China.

International Journal of Molecular Sciences
|February 26, 2022
PubMed
Summary

Plant U-Box (PUB) E3 ligases are crucial for plant development and stress response. This review details PUB gene evolution, functions, and regulation, aiding climate-resilient crop breeding.

Keywords:
E3 ubiqutin ligaseabiotic stressbiotic stressdevelopmentplant U-box proteinubiquitination

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Area of Science:

  • Plant molecular biology
  • Post-translational protein modification
  • E3 ubiquitin ligase superfamily

Background:

  • Ubiquitination is a key post-translational modification in eukaryotes.
  • Plant U-Box (PUB) E3 ligases, the smallest E3 ligase family, are vital for plant growth, development, and stress responses.
  • PUBs represent valuable genetic resources for enhancing crop resilience to climate change.

Purpose of the Study:

  • To provide a comprehensive review of recent advancements in the plant U-Box E3 ligase family.
  • To consolidate knowledge on PUB gene evolution, classification, biological functions, and regulatory mechanisms.
  • To facilitate the utilization of PUB genes in future crop breeding programs.

Main Methods:

  • Literature review and synthesis of recent research findings on PUB E3 ligases.
  • Analysis of published data on gene evolution and classification within the PUB family.
  • Compilation of information on the diverse biological roles and regulatory networks of PUBs in plants.

Main Results:

  • The review covers the evolutionary trajectory and classification of PUB genes across plant species.
  • Detailed insights into the multifaceted biological functions of PUBs in various plant processes are presented.
  • An overview of the complex regulatory mechanisms governing PUB activity and function is provided.

Conclusions:

  • Understanding the PUB gene family is essential for leveraging its potential in crop improvement.
  • This review bridges the knowledge gap on recent PUB research, supporting their application in breeding climate-resilient crops.
  • PUBs offer significant opportunities for developing crops with enhanced agricultural value and environmental adaptability.