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Related Concept Videos

Proteomics01:33

Proteomics

A proteome is the entire set of proteins that a cell type produces. We can study proteomes using the knowledge of genomes because genes code for mRNAs, and the mRNAs encode proteins. Although mRNA analysis is a step in the right direction, not all mRNAs are translated into proteins.
Proteomics is the study of proteomes' function. It involves the large-scale systematic study of the proteome to denote the protein complement expressed by a genome. Scientist Mark Wilkins coined the term proteomics...

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Identification of Post-translational Modifications of Plant Protein Complexes
10:07

Identification of Post-translational Modifications of Plant Protein Complexes

Published on: February 22, 2014

Modification-specific proteomics in plant biology.

A Jimmy Ytterberg1, Ole N Jensen

  • 1Department of Biochemistry and Molecular Biology, University of Southern Denmark, Odense M, Denmark. jimmyy@bmb.sdu.dk

Journal of Proteomics
|June 15, 2010
PubMed
Summary
This summary is machine-generated.

Post-translational modifications (PTMs) regulate biological processes. This review focuses on plant PTMs, particularly phosphoproteomics, and discusses methods for studying other modifications like S-nitrosylation and ubiquitylation.

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Area of Science:

  • Proteomics
  • Plant Biology
  • Biochemistry

Background:

  • Post-translational modifications (PTMs) are crucial for regulating protein function, structure, and stability.
  • While hundreds of PTMs exist, few have been extensively studied in plants using mass spectrometry.
  • Existing PTM characterization methods are often adapted from yeast and mammalian studies.

Purpose of the Study:

  • To review plant phosphoproteomics studies.
  • To discuss quantitative proteomics methods for characterizing various PTMs in plants, including redox-mediated modifications (S-nitrosylation, tyrosine nitration, S-glutathionylation), ubiquitylation, SUMOylation, and glycosylation.
  • To highlight the advantages of peptide-level PTM enrichment for quantitative proteomics in plants.

Main Methods:

  • Review of existing literature on plant phosphoproteomics.
  • Discussion of mass spectrometry-based quantitative proteomics strategies.
  • Comparative analysis of methods for plant PTM characterization versus mammalian systems.

Main Results:

  • Protein phosphorylation is the most extensively studied PTM at the proteome-wide level in plants.
  • Quantitative proteomics approaches, especially peptide-level enrichment, are vital for identifying PTMs and assessing their functional relevance.
  • Methods for other PTMs in plants are less developed compared to phosphorylation.

Conclusions:

  • There is a need for more developed and quantitative proteomics methods for diverse PTMs in plants.
  • Understanding plant PTMs is essential for deciphering biological regulation, stress responses, and overall plant function.
  • Peptide-level enrichment strategies offer a powerful approach for comprehensive PTM analysis in plants.