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Related Concept Videos

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

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Mitochondrial precursors are translocated to the internal subcompartments via independent mechanisms involving distinct protein machineries called translocases.
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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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The Electron Transport Chain01:30

The Electron Transport Chain

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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.
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Rotenone, a widely used pesticide, prevents electron transfer from Fe-S cluster to ubiquinone or Q...
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Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the...
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Mitochondrial Precursor Proteins01:39

Mitochondrial Precursor Proteins

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Mitochondrial precursors are partially unfolded or loosely folded polypeptide chains. Newly synthesized precursors are inhibited from spontaneously folding into their native conformation by the cytosolic chaperones, heat shock proteins 70 (Hsp70), and mitochondrial import stimulation factors (MSFs). Precursors bound to MSFs are guided to the TOM70-TOM37 receptors, while precursors bound to Hsp70  chaperones are targetted to TOM20-TOM22 receptor complexes.
Most of the mitochondrial...
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Related Experiment Video

Updated: Mar 26, 2026

Assessment of Open Probability of the Mitochondrial Permeability Transition Pore in the Setting of Coenzyme Q Excess
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MTERF2 contributes to MPP(+)-induced mitochondrial dysfunction and cell damage.

Yanyan Han1, Peiye Gao1, Shi Qiu1

  • 1Department of Cellular and Genetic Medicine, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China.

Biochemical and Biophysical Research Communications
|January 31, 2016
PubMed
Summary
This summary is machine-generated.

Mitochondrial transcription termination factor 2 (MTERF2) exacerbates mitochondrial dysfunction and cell damage in Parkinson's disease models. Reducing MTERF2 offers a potential therapeutic strategy for environmentally induced Parkinson's disease.

Keywords:
CCCPMPP(+)Mitochondrial dysfunctionMitochondrial transcription termination factors 2 (MTERF2)Parkinson's diseaseProtein transport

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Gene-environment Interaction Models to Unmask Susceptibility Mechanisms in Parkinson's Disease
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Gene-environment Interaction Models to Unmask Susceptibility Mechanisms in Parkinson's Disease
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Gene-environment Interaction Models to Unmask Susceptibility Mechanisms in Parkinson's Disease

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Area of Science:

  • Neuroscience
  • Molecular Biology
  • Genetics

Background:

  • Parkinson's disease (PD) pathogenesis involves mitochondrial dysfunction.
  • Mitochondrial internal regulating factors' roles in PD are not fully understood.
  • Mitochondrial transcription termination factor 2 (MTERF2) regulates mitochondrial DNA transcription and oxidative phosphorylation.

Purpose of the Study:

  • To investigate the role of MTERF2 in MPP(+)-induced mitochondrial dysfunction and cell damage in Parkinson's disease.
  • To determine if MTERF2 is a potential therapeutic target for environmentally induced Parkinson's disease.

Main Methods:

  • Utilized SH-SY5Y cell line as a model for Parkinson's disease.
  • Administered MPP(+) to induce cellular damage and mitochondrial dysfunction.
  • Assessed MTERF2 expression levels.
  • Performed MTERF2 knockdown experiments.
  • Evaluated mitochondrial dysfunction and cell damage.

Main Results:

  • MPP(+) treatment increased MTERF2 expression in SH-SY5Y cells.
  • MPP(+) induced significant mitochondrial dysfunction and cell damage.
  • Knockdown of MTERF2 alleviated MPP(+)-induced mitochondrial dysfunction and cell damage.
  • MTERF2 was found to contribute to MPP(+)-induced mitochondrial disruption.

Conclusions:

  • MTERF2 plays a significant role in mediating mitochondrial dysfunction and cell damage in response to MPP(+) exposure.
  • MTERF2 is identified as a potential therapeutic target for Parkinson's disease, particularly forms induced by environmental factors.