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Redox Reactions

Redox Reactions

Oxidation-reduction or redox reactions involve the transfer of electrons from one molecule or atom to another. When an atom gains an electron, another atom must lose an electron, meaning oxidation and reduction must occur together. Since the redox occurs in pairs, the atom that gets oxidized is also called the reducing agent or reductant, and the atom that is reduced is also called the oxidizing agent or oxidant. A straightforward way to remember the definitions of oxidation and reduction is...

Redox Reactions

Redox Reactions

Redox reactions are vital biochemical processes that underpin energy metabolism in cells. These reactions involve the transfer of electrons between molecules, occurring in tandem as oxidation and reduction. Oxidation refers to the loss of electrons, while reduction denotes their gain. This coupling ensures the seamless flow of electrons through metabolic pathways. For example, in bacterial metabolism, glucose undergoes oxidation to carbon dioxide, while oxygen is simultaneously reduced to...

Redox Equilibria: Overview

Redox Equilibria: Overview

A reduction-oxidation reaction is commonly called a redox reaction. In a redox reaction, electrons are transferred from one species to another rather than being shared between or among atoms. The reducing agent or reductant is the species that loses electrons and gets oxidized in the process. The species that gains electrons and gets reduced in the process is the oxidizing agent or oxidant. Redox reactions are represented as two separate equations called half-reactions, where one equation...

Redox Titration: Overview

Redox Titration: Overview

Redox titration is a chemical analysis technique used to determine the concentration of an unknown substance by measuring the electron transfer in a redox (reduction-oxidation) reaction. The process involves gradually adding a titrant with a known concentration of an oxidizing or reducing agent, to the analyte, the solution with an unknown concentration, until reaching the endpoint, which indicates the completion of the reaction between the two substances. Ensuring the analyte is in a single...

Redox Titration: Other Oxidizing and Reducing Agents

Redox Titration: Other Oxidizing and Reducing Agents

Besides iodine, other oxidizing or reducing agents can serve as titrants in redox titrations. Common oxidizing titrants include KMnO4, cerium(IV), and K2Cr2O7. The choice of oxidizing titrants depends on factors like stability, cost, analyte strength, and reaction rate between the analyte and titrant. KMnO4 is a strong oxidizing titrant that reduces from Mn(VII) to Mn(II) in a highly acidic solution, simultaneously oxidizing the analyte to a higher oxidation state. In this case, KMnO4 acts as a...

Proteomics

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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Updated: Jun 3, 2026

Profiling Thiol Redox Proteome Using Isotope Tagging Mass Spectrometry

Profiling Thiol Redox Proteome Using Isotope Tagging Mass Spectrometry

Published on: March 24, 2012

Plant redox proteomics.

Nicolas Navrot¹, Christine Finnie, Birte Svensson

¹Enzyme and Protein Chemistry, Department of Systems Biology, Technical University of Denmark, Building 224, DK-2800, Kgs Lyngby, Denmark.

Journal of Proteomics

|March 17, 2011

Summary

This summary is machine-generated.

Plants face oxidative stress, leading to protein damage and altered functions. This review explores plant redox proteomics, focusing on how protein modifications regulate stress responses and signaling pathways.

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Last Updated: Jun 3, 2026

Profiling Thiol Redox Proteome Using Isotope Tagging Mass Spectrometry

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Published on: March 24, 2012

Cellular Redox Profiling Using High-content Microscopy

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Area of Science:

Plant Science
Proteomics
Biochemistry

Background:

Aerobic plants encounter reactive oxygen species (ROS), causing oxidative protein damage.
Redox post-translational modifications (PTMs) are crucial for regulating plant enzymatic activities and biological processes.
Proteins like thioredoxin and glutaredoxin play dual roles in oxidative stress resistance and signal transduction via redox PTMs.

Purpose of the Study:

To provide a comprehensive overview of redox-regulated pathways in plants.
To highlight the growing interest in monitoring redox PTMs on a proteome scale.
To review recent advancements in plant redox proteomics.

Main Methods:

Review of recent developments in plant redox proteomics.
Discussion of challenges in analyzing redox PTMs, including maintaining in vivo redox states and sample preparation.
Focus on proteome-scale monitoring of redox PTMs.

Main Results:

Redox PTMs are critical for plant stress resistance and signaling.
Technical challenges have limited the study of redox PTMs in plant proteome analysis.
Emerging techniques are enabling a broader understanding of plant redox proteomics.

Conclusions:

Plant redox proteomics is a rapidly developing field with significant implications for understanding plant biology.
Overcoming technical hurdles is key to advancing the field.
Further research in plant redox proteomics will enhance our knowledge of stress responses and regulatory mechanisms.