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Related Concept Videos

Redox Reactions01:27

Redox Reactions

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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...
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Microbial Nutrition01:28

Microbial Nutrition

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Organisms exhibit remarkable metabolic diversity, categorized based on how they acquire energy and carbon. These strategies enable survival in various ecological niches and are essential for maintaining energy flow and nutrient cycling within ecosystems.Energy and Carbon SourcesOrganisms are classified as phototrophs or chemotrophs based on energy acquisition. Phototrophs use light as their energy source, while chemotrophs rely on oxidizing chemical compounds. Further differentiation arises...
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Redox Equilibria: Overview01:23

Redox Equilibria: Overview

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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...
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Redox Titration: Other Oxidizing and Reducing Agents01:26

Redox Titration: Other Oxidizing and Reducing Agents

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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...
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Oxidation and Reduction of Organic Molecules01:19

Oxidation and Reduction of Organic Molecules

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Energy production within a cell involves many coordinated chemical pathways. Most of these pathways are combinations of oxidation and reduction reactions, which occur at the same time. An oxidation reaction strips an electron from an atom in a compound, and the addition of this electron to another compound is a reduction reaction. Because oxidation and reduction usually occur together, these pairs of reactions are called redox reactions.
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Anoxygenic Photosynthesis01:30

Anoxygenic Photosynthesis

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Anoxygenic photosynthesis is a phototrophic process that captures light energy to drive carbon fixation without producing molecular oxygen. Unlike oxygenic photosynthesis, which utilizes water as an electron donor and releases oxygen, anoxygenic phototrophs use alternative electron donors such as hydrogen sulfide (H₂S), elemental sulfur (S⁰), or thiosulfate (S₂O₃²⁻). This process is carried out by diverse groups of bacteria, including purple bacteria, green...
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EPR Monitored Redox Titration of the Cofactors of Saccharomyces cerevisiae Nar1
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Microbial redox coenzyme engineering and applications in biosynthesis.

Haiqian Yang1, Xiaojing Jia1, Yejun Han1

  • 1National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China.

Trends in Microbiology
|February 9, 2022
PubMed
Summary
This summary is machine-generated.

Researchers are advancing synthetic biology by developing new methods to control and regenerate essential coenzymes, like NAD(P)+ and NAD(P)H, crucial for biosynthesis and redox balance in biological systems.

Keywords:
(reduced) nicotinamide adenine dinucleotide (phosphate) (NAD(P)(+) and NAD(P)H)biosynthesiscoenzyme regenerationcoenzyme regulationoxidoreductase

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Area of Science:

  • Biochemistry
  • Synthetic Biology
  • Enzyme Catalysis

Background:

  • Biosynthetic processes rely on oxidoreductases, which require coenzymes as electron carriers.
  • Redox balance, maintained by nicotinamide adenine dinucleotide (phosphate) (NAD(P)+) and its reduced form (NAD(P)H), is vital for cellular functions.
  • Understanding and manipulating these coenzymes are key to advancing metabolic engineering.

Purpose of the Study:

  • To explore novel techniques for the regulation and regeneration of essential coenzymes.
  • To enhance the efficiency of biosynthetic pathways in synthetic biology applications.
  • To deepen the understanding of redox balance mechanisms in biological systems.

Main Methods:

  • Investigating oxidoreductase-catalyzed reactions.
  • Developing in vitro and in vivo methods for coenzyme regeneration.
  • Applying advanced techniques in synthetic biology for pathway optimization.

Main Results:

  • Demonstrated successful regulation of coenzyme levels.
  • Showcased effective regeneration strategies for NAD(P)+/NAD(P)H.
  • Advanced the application of these techniques in synthetic biology.

Conclusions:

  • New coenzyme regulation and regeneration techniques offer significant potential for synthetic biology.
  • Optimized redox balance through coenzyme management is critical for efficient biosynthesis.
  • Further research in this area promises innovative biotechnological solutions.