関連する実験動画

Updated: May 14, 2025

Calorespirometry: A Powerful, Noninvasive Approach to Investigate Cellular Energy Metabolism
09:08

Calorespirometry: A Powerful, Noninvasive Approach to Investigate Cellular Energy Metabolism

Published on: May 31, 2018

7.5K

細胞外呼吸は,Escherichia coliにおける潜在的エネルギー代謝である

Biki Bapi Kundu1, Jayanth Krishnan2, Richard Szubin2

  • 1PhD Program in Systems, Synthetic, and Physical Biology, Rice University, Houston, TX 77005, USA.

Cell
|April 11, 2025
PubMed
まとめ

エシェリキア・コライは,2-ヒドロキシ-1,4-ナフトキノン (HNQ) とニトロレドクタゼを介して,従来の代謝経路とは独立して細胞外電極を用いて呼吸する. この発見は,E. coliにおける新しい無酸素エネルギー代謝を明らかにしています.

キーワード:
適応的な実験室での進化アナーロビック代謝電子シャトル細胞外電子移転流量バランス分析iModulon解析についてニトロリダクタゼレドックスホメオスタシス

さらに関連する動画

High-Resolution Respirometry to Assess Bioenergetics in Cells and Tissues Using Chamber- and Plate-Based Respirometers09:53

High-Resolution Respirometry to Assess Bioenergetics in Cells and Tissues Using Chamber- and Plate-Based Respirometers

Published on: October 26, 2021

4.5K
Characterizing Mediated Extracellular Electron Transfer in Lactic Acid Bacteria with a Three-Electrode, Two-Chamber Bioelectrochemical System10:23

Characterizing Mediated Extracellular Electron Transfer in Lactic Acid Bacteria with a Three-Electrode, Two-Chamber Bioelectrochemical System

Published on: August 23, 2024

585

関連する概念動画

Introduction to Cellular Respiration01:22

Introduction to Cellular Respiration

Organisms harvest energy from food, but this energy cannot be directly used by cells. Cells convert the energy stored in nutrients into a more usable form: adenosine triphosphate (ATP).
ATP stores energy in chemical bonds that can be quickly released when needed. Cells produce energy in the form of ATP through the process of cellular respiration. Although much of the energy from cellular respiration is released as heat, some of it is used to make ATP.
During cellular respiration, several...
171.8K
Fermentation01:29

Fermentation

Most eukaryotic organisms require oxygen to survive and function adequately. Such organisms produce large amounts of energy during aerobic respiration by metabolizing glucose and oxygen into carbon dioxide and water. However, most eukaryotes can generate some energy in the absence of oxygen by anaerobic metabolism.
Fermentation is a type of metabolic process that occurs in the absence of oxygen, where organic molecules such as glucose are broken down to produce energy. During this process, the...
112.7K
The Electron Transport Chain01:30

The Electron Transport Chain

The electron transport chain or oxidative phosphorylation is an exothermic process in which free energy released during electron transfer reactions is coupled to ATP synthesis. This process is a significant source of energy in aerobic cells, and therefore inhibitors of the electron transport chain can be detrimental to the cell's metabolic processes.
Inhibitors of the electron transport chain
Rotenone, a widely used pesticide, prevents electron transfer from Fe-S cluster to ubiquinone or Q...
15.8K
Endergonic and Exergonic Reactions in the Cell01:27

Endergonic and Exergonic Reactions in the Cell

If energy releases during a chemical reaction, then the resulting value will be a negative number. In other words, reactions that release energy have a ∆G < 0. A negative ∆G also means that the reaction's products have less free energy than the reactants because they gave off some free energy during the reaction. Scientists call reactions with a negative ∆G, and which consequently release free energy, exergonic reactions. Exergonic means energy is exiting the...
14.6K
Fates of Pyruvate01:20

Fates of Pyruvate

Pyruvate is the end product of glycolysis, where glucose is oxidized to pyruvate, simultaneously reducing NAD+ to NADH. Two molecules of ATP are also produced by substrate-level phosphorylation.
In aerobic organisms, pyruvate is metabolized via the citric acid cycle to produce reduced coenzymes NADH and FADH2. These coenzymes are then oxidized in the electron transport chain to produce ATP and, in the process, regenerate the NAD+ and FAD. As seen in some cell types and organisms, fermentation...
8.0K
Outcomes of Glycolysis01:13

Outcomes of Glycolysis

Nearly all the energy used by cells comes from the bonds that make up complex organic compounds. These organic compounds are broken down into simpler molecules, such as glucose. As a result, cells extract energy from glucose over many chemical reactions—a process called cellular respiration.
Cellular respiration can occur aerobically (with oxygen) or anaerobically (without oxygen). In the presence of oxygen, cellular respiration starts with glycolysis and continues with pyruvate...
98.2K