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Related Concept Videos

Cofactors and Coenzymes01:27

Cofactors and Coenzymes

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Enzymes require additional components for proper function. There are two such classes of molecules: cofactors and coenzymes. Cofactors are metallic ions and coenzymes are non-protein organic molecules. Both of these types of helper molecule can be tightly bound to the enzyme or bound only when the substrate binds.
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Cofactors and Coenzymes01:24

Cofactors and Coenzymes

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Enzymes are proteins made of amino acids. The functional group of each constituent amino acid catalyzes a wide variety of chemical reactions via ionic interactions or acid-base reactions. However, amino acids cannot catalyze oxidation-reduction and group transfer reactions and need to be aided by non-protein components called cofactors. Cofactors are also referred to as the chemical teeth of an enzyme.
Cofactors can be metallic ions or organic molecules called coenzymes. These types of helper...
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Role of Reduced Coenzymes NADH and FADH₂01:29

Role of Reduced Coenzymes NADH and FADH₂

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The energy released from the breakdown of the chemical bonds within nutrients can be stored either through the reduction of electron carriers or in the bonds of adenosine triphosphate (ATP). In living systems, a small class of compounds functions as mobile electron carriers, molecules that bind to and shuttle high-energy electrons between compounds in pathways. The principal electron carriers that will be considered originate from the B vitamin group and are derivatives of nucleotides; they are...
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Sulfur Assimilation01:20

Sulfur Assimilation

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Sulfur is an essential element in biological systems, contributing to synthesizing key biomolecules, including amino acids such as cysteine and methionine, and cofactors such as coenzyme A and biotin. Microorganisms primarily assimilate sulfur as sulfate (SO₄²⁻) from the environment, which must undergo a series of biochemical transformations before it can be incorporated into cellular components. As sulfate is highly oxidized, it must undergo assimilatory sulfate reduction to...
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Pharmacokinetics: Drug–Food and Drug–Viral Interactions01:26

Pharmacokinetics: Drug–Food and Drug–Viral Interactions

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A drug interaction occurs when the concurrent use of another drug, food, or an external substance alters the pharmacological activity of a drug. This interaction can modify the action of the original drug, affecting its effectiveness and safety.Drug–food interactions are significant as they impact drug absorption, metabolism, and excretion. For example, grapefruit juice is a well-known disruptor of drug metabolism. It inhibits the cytochrome P450 3A4 enzyme, crucial for the metabolism of...
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Electron Transport Chain: Complex I and II01:46

Electron Transport Chain: Complex I and II

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The mitochondrial electron transport chain (ETC) is the main energy generation system in the eukaryotic cells. However, mitochondria also produce cytotoxic reactive oxygen species (ROS) due to the large electron flow during oxidative phosphorylation. While Complex I is one of the primary sources of superoxide radicals, ROS production by Complex II is uncommon and may only be observed in cancer cells with mutated complexes.
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Related Experiment Video

Updated: Oct 27, 2025

Assessment of Open Probability of the Mitochondrial Permeability Transition Pore in the Setting of Coenzyme Q Excess
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Assessment of Open Probability of the Mitochondrial Permeability Transition Pore in the Setting of Coenzyme Q Excess

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COVID-19, Coenzyme Q10 and Selenium.

I R Hargreaves1, D Mantle2

  • 1School of Pharmacy and Biomolecular Sciences, Liverpool John Moores, Liverpool, UK. i.p.hargreaves@ljmu.ac.uk.

Advances in Experimental Medicine and Biology
|July 19, 2021
PubMed
Summary
This summary is machine-generated.

Coenzyme Q10 (CoQ10) and selenium show promise in treating COVID-19 by balancing immune response and reducing inflammation. These nutrients may help mitigate severe illness and support future pandemic preparedness.

Keywords:
COVID-19CoQ10Coenzyme Q10SARS-CoV-2SeleniumSupplement

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Area of Science:

  • Immunology
  • Nutritional Science
  • Virology

Background:

  • COVID-19 infection requires balancing immune defense against viral load without triggering a cytokine storm.
  • Severe COVID-19 cases involve lung injury and respiratory distress due to uncontrolled inflammation.
  • Nutritional status may influence the immune response and inflammatory resolution in viral infections.

Purpose of the Study:

  • To review the potential role of coenzyme Q10 (CoQ10) and selenium in managing COVID-19.
  • To explore the effects of CoQ10 and selenium on oxidative stress and inflammation in viral infections.

Main Methods:

  • Literature review of studies on CoQ10, selenium, oxidative stress, inflammation, and viral infections.
  • Analysis of the potential impact of these nutrients on COVID-19 pathogenesis.

Main Results:

  • Coenzyme Q10 (CoQ10) and selenium exhibit properties that may counteract oxidative stress and inflammation.
  • Both nutrients show potential as therapeutic agents in COVID-19 treatment.

Conclusions:

  • CoQ10 and selenium are promising nutrients for managing COVID-19.
  • These nutrients could be valuable in mitigating COVID-19 severity and for future pandemic preparedness alongside vaccination efforts.