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Related Concept Videos

Redox Reactions01:27

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 Reactions01:24

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...
Eukaryotic Compartmentalization01:37

Eukaryotic Compartmentalization

One of the distinguishing features of eukaryotic cells is that they contain membrane-bound organelles, such as the nucleus and mitochondria, that carry out specialized functions. Since biological membranes are only selectively permeable to solutes, they help create a compartment with controlled conditions inside an organelle. These microenvironments are tailored to the organelle's specific functions and help isolate them from the surrounding cytosol.
For example, lysosomes in the animal cells...
Eukaryotic Compartmentalizations01:46

Eukaryotic Compartmentalizations

One of the distinguishing features of eukaryotic cells is that they contain membrane-bound organelles, such as the nucleus and mitochondria, that carry out specialized functions. Since biological membranes are only selectively permeable to solutes, they help create a compartment with controlled conditions inside an organelle. These microenvironments are tailored to the organelle's specific functions and help isolate them from the surrounding cytosol.
For example, lysosomes in the animal cells...
Eukaryotic Compartmentalization01:46

Eukaryotic Compartmentalization

One of the distinguishing features of eukaryotic cells is that they contain membrane-bound organelles, such as the nucleus and mitochondria, that carry out specialized functions. Since biological membranes are only selectively permeable to solutes, they help create a compartment with controlled conditions inside an organelle. These microenvironments are tailored to the organelle's specific functions and help isolate them from the surrounding cytosol.
For example, lysosomes in the animal cells...
Cellular Injury I: Introduction01:00

Cellular Injury I: Introduction

Cellular injury occurs when a cell cannot maintain homeostasis or adapt to stressors such as hypoxia, toxins, or trauma. Depending on severity and duration, injury may be reversible, allowing recovery, or irreversible, leading to cell death.General Mechanisms of Cell InjuryAlthough causes vary, most cellular injuries arise from a few key mechanisms that disrupt essential functions and often amplify one another. Cell survival depends on the extent and balance of these disturbances.ATP depletion...

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Related Experiment Video

Updated: Jun 7, 2026

Assessment of Cellular Oxidation using a Subcellular Compartment-Specific Redox-Sensitive Green Fluorescent Protein
06:10

Assessment of Cellular Oxidation using a Subcellular Compartment-Specific Redox-Sensitive Green Fluorescent Protein

Published on: June 18, 2020

Redox compartmentalization and cellular stress.

D P Jones1, Y-M Go

  • 1Department of Medicine, Division of Pulmonary, Allergy and Critical Care Medicine, Emory University, Atlanta, GA 30322, USA. dpjones@emory.edu

Diabetes, Obesity & Metabolism
|October 30, 2010
PubMed
Summary
This summary is machine-generated.

Cellular organization maintains redox balance, crucial for function and stress response. Disruptions in this redox organization can lead to disease, highlighting the need for targeted antioxidants.

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Defining Hsp33's Redox-regulated Chaperone Activity and Mapping Conformational Changes on Hsp33 Using Hydrogen-deuterium Exchange Mass Spectrometry
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Defining Hsp33's Redox-regulated Chaperone Activity and Mapping Conformational Changes on Hsp33 Using Hydrogen-deuterium Exchange Mass Spectrometry

Published on: June 7, 2018

Cellular Redox Profiling Using High-content Microscopy
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Cellular Redox Profiling Using High-content Microscopy

Published on: May 14, 2017

Related Experiment Videos

Last Updated: Jun 7, 2026

Assessment of Cellular Oxidation using a Subcellular Compartment-Specific Redox-Sensitive Green Fluorescent Protein
06:10

Assessment of Cellular Oxidation using a Subcellular Compartment-Specific Redox-Sensitive Green Fluorescent Protein

Published on: June 18, 2020

Defining Hsp33's Redox-regulated Chaperone Activity and Mapping Conformational Changes on Hsp33 Using Hydrogen-deuterium Exchange Mass Spectrometry
10:24

Defining Hsp33's Redox-regulated Chaperone Activity and Mapping Conformational Changes on Hsp33 Using Hydrogen-deuterium Exchange Mass Spectrometry

Published on: June 7, 2018

Cellular Redox Profiling Using High-content Microscopy
11:37

Cellular Redox Profiling Using High-content Microscopy

Published on: May 14, 2017

Area of Science:

  • Cell Biology
  • Biochemistry
  • Physiology

Background:

  • Mammalian cells exhibit intricate subcellular organization to optimize function and protect DNA from oxidative damage.
  • Proteins possess unique 'sulphur switches' enabling dynamic regulation of structure and function through reversible oxidation.
  • Cellular redox systems operate in kinetically limited steady states, distinct across organelles like mitochondria and nuclei.

Purpose of the Study:

  • To elucidate the subcellular redox organization in mammalian cells.
  • To understand the role of redox signalling and control in cellular function and stress response.
  • To explore the implications of disrupted redox organization in disease pathogenesis.

Main Methods:

  • Analysis of redox states and signalling pathways within different cellular compartments.
  • Investigation of the glutathione and thioredoxin systems in maintaining protein cysteine redox balance.
  • Utilizing emerging research tools to study subcellular redox organization.

Main Results:

  • Mitochondria are highly reducing and susceptible to oxidation, while nuclei are reducing but more resistant.
  • Glutathione and thioredoxin systems maintain distinct, non-redundant redox balances for protein cysteines.
  • Cellular redox organization creates both responsiveness to stress and sites of vulnerability.

Conclusions:

  • Disruption of cellular redox organization is a common cause of disease.
  • Understanding subcellular redox organization is key to developing targeted antioxidants.
  • New research tools offer opportunities to restore redox signalling and control for disease prevention.