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Related Concept Videos

Mitochondria01:37

Mitochondria

Mitochondria are eukaryotic cellular organelles that are known to produce energy through a process called oxidative phosphorylation. Besides their primary function, mitochondria are involved in various cellular processes, including cell growth, differentiation, signaling, metabolism, and senescence. Age-related changes cause a decline in mitochondrial quality and integrity due to increased mitochondrial mutations and oxidative damage. Thus, aging can severely impact mitochondrial functions,...
Mitochondria01:37

Mitochondria

Mitochondria are eukaryotic cellular organelles that are known to produce energy through a process called oxidative phosphorylation. Besides their primary function, mitochondria are involved in various cellular processes, including cell growth, differentiation, signaling, metabolism, and senescence. Age-related changes cause a decline in mitochondrial quality and integrity due to increased mitochondrial mutations and oxidative damage. Thus, aging can severely impact mitochondrial functions,...
Electron Transport Chains01:28

Electron Transport Chains

The final stage of cellular respiration is oxidative phosphorylation that consists of two steps: the electron transport chain and chemiosmosis. The electron transport chain is a set of proteins found in the inner mitochondrial membrane in eukaryotic cells. Its primary function is to establish a proton gradient that can be used during chemiosmosis to produce ATP and generate electron carriers, such as NAD+ and FAD, that are used in glycolysis and the citric acid cycle.
The ETC is comprised of...
Mitochondrial Membranes01:45

Mitochondrial Membranes

A single mitochondrion is a bean-shaped organelle enclosed by a double-membrane system. The outer membrane of mitochondria is smooth and contains many porins - the integral membrane transporters. Porins enable free diffusion of ions and small uncharged molecules through the outer mitochondrial membrane but limit the transport of molecules larger than 5000 Daltons. Further, the outer mitochondrial membrane forms a unique structure called membrane contact sites with other subcellular organelles,...
Mitochondrial Membranes01:45

Mitochondrial Membranes

A single mitochondrion is a bean-shaped organelle enclosed by a double-membrane system. The outer membrane of mitochondria is smooth and contains many porins - the integral membrane transporters. Porins enable free diffusion of ions and small uncharged molecules through the outer mitochondrial membrane but limit the transport of molecules larger than 5000 Daltons. Further, the outer mitochondrial membrane forms a unique structure called membrane contact sites with other subcellular organelles,...
Introduction to Metabolism01:30

Introduction to Metabolism

Metabolism encompasses all biochemical reactions in a living organism, facilitating both the breakdown and synthesis of biomolecules. These metabolic processes are categorized into catabolic and anabolic pathways, which operate in a coordinated manner to ensure energy balance and cellular function.Catabolic Pathways and Energy ReleaseCatabolic pathways involve the breakdown of complex macromolecules such as carbohydrates, lipids, and proteins into smaller structures like monosaccharides, fatty...

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Mitochondrial Respiration Quantification in Yeast Whole Cells
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Mitochondrial Respiration Quantification in Yeast Whole Cells

Published on: November 8, 2024

Mitochondrial energetic metabolism-some general principles.

Jean-Pierre Mazat1, Stéphane Ransac, Margit Heiske

  • 1CNRS-UMR5095, Institute of Biochemistry and Genetics of the Cell, 1 Rue Camille Saint Saëns, 33077 Bordeaux cedex, France. jpm@u-bordeaux2.fr

IUBMB Life
|February 27, 2013
PubMed
Summary

Mitochondria generate cellular energy (ATP) and maintain redox balance. This review explores how ATP synthesis and cellular redox state are modularly coupled, presenting theoretical frameworks for this integrated system.

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Isolation and Functional Analysis of Mitochondria from Cultured Cells and Mouse Tissue
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Isolation and Functional Analysis of Mitochondria from Cultured Cells and Mouse Tissue
09:27

Isolation and Functional Analysis of Mitochondria from Cultured Cells and Mouse Tissue

Published on: March 23, 2015

Area of Science:

  • Biochemistry
  • Cell Biology
  • Mitochondrial Function

Background:

  • Mitochondria are central to cellular energy production (ATP synthesis) and redox homeostasis in nonphotosynthetic organisms.
  • Key components like respiratory complexes and ATP synthase are structurally characterized, yet their functional coupling remains debated.

Purpose of the Study:

  • To review mechanisms enabling modular coupling between ATP synthesis and cellular redox state.
  • To present theoretical approaches for understanding this integrated mitochondrial system.

Main Methods:

  • Literature review of mitochondrial function and redox biology.
  • Analysis of theoretical models for integrated cellular systems.

Main Results:

  • Identified processes facilitating modular coupling between ATP synthesis and redox state.
  • Explored theoretical frameworks for analyzing the interplay between energy metabolism and redox balance.

Conclusions:

  • The coupling between mitochondrial ATP synthesis and cellular redox state is modular and can be theoretically modeled.
  • Understanding these integrated systems is crucial for comprehending cellular bioenergetics and redox homeostasis.