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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,...
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,...
Electron Transport Chain: Complex I and II01:46

Electron Transport Chain: Complex I and II

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.
ROS generation is regulated and maintained at moderate levels necessary...
Translocation of Proteins into the Mitochondria01:19

Translocation of Proteins into the Mitochondria

Mitochondrial precursors are translocated to the internal subcompartments via independent mechanisms involving distinct protein machineries called translocases.
Sorting of outer membrane proteins:
Mitochondrial outer membrane proteins are of two types: the transmembrane, beta-barrel porins, and the membrane-anchored, alpha-helical proteins. Beta-barrel porin precursors are translocated by the TOM complex and inserted into the outer mitochondrial membrane by the SAM complex. In contrast,...

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Assessing Mitochondrial Function in Sciatic Nerve by High-Resolution Respirometry
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Mitochondrial function and dysfunction: an update.

Robert E Davis1, Michael Williams

  • 1Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA. rivoli1635@comcast.net

The Journal of Pharmacology and Experimental Therapeutics
|June 16, 2012
PubMed
Summary
This summary is machine-generated.

Mitochondrial dysfunction is key in many diseases. Targeting mitochondria offers new drug discovery avenues for cancer, metabolic, and neurological disorders.

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Area of Science:

  • Biochemistry
  • Cell Biology
  • Pathology

Background:

  • Mitochondrial dysfunction is increasingly recognized as a central factor in numerous human diseases.
  • This has spurred significant interest in developing mitochondria-targeted therapeutics.

Purpose of the Study:

  • To provide an updated overview of the mitochondrion's critical roles.
  • To highlight the potential of targeting mitochondrial pathways for drug discovery.

Main Methods:

  • Literature review and synthesis of current research on mitochondrial function and disease.
  • Analysis of key mitochondrial processes: ATP production, reactive oxygen species (ROS) generation, and cell death regulation.

Main Results:

  • Mitochondria are central to cellular energy (ATP) production.
  • Mitochondria play a crucial role in regulating cell death pathways.
  • Mitochondrial dysfunction is implicated in cancer, cardiovascular, metabolic, and central nervous system diseases.

Conclusions:

  • Understanding mitochondrial biology is vital for developing novel therapeutic strategies.
  • Targeting mitochondrial processes presents a promising frontier for drug discovery across a spectrum of diseases.