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Related Concept Videos

Translocation of Proteins into the Mitochondria01:19

Translocation of Proteins into the Mitochondria

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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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Comparing Mitochondrial, Chloroplast, and Prokaryotic Genomes02:16

Comparing Mitochondrial, Chloroplast, and Prokaryotic Genomes

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The present-day mitochondrial and chloroplast genomes have retained some of the characteristics of their ancestral prokaryotes and also have acquired new attributes during their evolution within eukaryotic cells. Like prokaryotic genomes, mitochondrial and chloroplast genomes neither bind with histone-like proteins nor show complex packaging into chromosome-like structures, as observed in eukaryotes. Unlike mitotic cell divisions observed in eukaryotic cells, mitochondria and chloroplasts...
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The Inner Mitochondrial Membrane01:28

The Inner Mitochondrial Membrane

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The inner mitochondrial membrane is the primary site of ATP synthesis. The inner membrane domain that forms a smooth layer adjacent to the outer membrane is called the inner boundary membrane. This domain contains membrane transporters that drive metabolites in and out of the mitochondria.  In contrast, the inner membrane network that invaginates into the matrix space is called the cristae membrane. This domain accounts for principle mitochondrial function as it accommodates the protein...
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Mitochondrial Protein Sorting01:39

Mitochondrial Protein Sorting

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Mitochondria are double-membrane organelles of the eukaryotes involved in cellular metabolism, signaling, ATP synthesis, and programmed cell death.  Each of these processes requires specific proteins and enzymes that must be correctly sorted to the right mitochondrial subcompartment for the proper functioning of the organelle.
Most of these mitochondrial proteins are encoded by the nucleus and imported to the mitochondria as unfolded or loosely folded precursors. Mitochondrial precursors...
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Mitochondrial Membranes01:45

Mitochondrial Membranes

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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,...
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Export of Mitochondrial and Chloroplast Genes02:19

Export of Mitochondrial and Chloroplast Genes

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A eukaryotic cell can have up to three different types of genetic systems: nuclear, mitochondrial, and chloroplast. During evolution, organelles have exported many genes to the nucleus; this transfer is still ongoing in some plant species. Approximately 18% of the Arabidopsis thaliana nuclear genome is thought to be derived from the chloroplast’s cyanobacterial ancestor, and around 75% of the yeast genome derived from the mitochondria’s bacterial ancestor. This export has occurred...
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Related Experiment Video

Updated: Dec 31, 2025

Author Spotlight: An Optimized Automated Method for Investigating Retinoic Acid Receptors in Neuronal Mitochondria
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Author Spotlight: An Optimized Automated Method for Investigating Retinoic Acid Receptors in Neuronal Mitochondria

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Omics Integration for Mitochondria Systems Biology.

Xin Hu1, Young-Mi Go1, Dean P Jones1

  • 1Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Emory University, Atlanta, Georgia.

Antioxidants & Redox Signaling
|January 1, 2020
PubMed
Summary

Mitophagy is crucial for cell and organism health, with mitochondria performing complex functions beyond energy production. Advanced omics tools reveal how mitochondrial reprogramming, influenced by metal ion balance, impacts disease and cancer treatment.

Keywords:
biological networkintegrationmitochondriaomicssystems biology

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Area of Science:

  • Mitochondrial biology and systems biology
  • Cellular homeostasis and disease mechanisms

Background:

  • Mitochondrial functions extend beyond energy production, involving complex networks for cellular activities.
  • Mitophagy plays a central role in maintaining cellular and organismal homeostasis.
  • Mitochondrial reprogramming, involving adaptive or maladaptive rewiring, impacts cell fate and disease.

Purpose of the Study:

  • To explore the role of omics tools in understanding mitochondrial reprogramming.
  • To investigate the impact of metal ion homeostasis on mitochondrial reprogramming.
  • To link mitochondrial form and function in mitophagy research using omics integration.

Main Methods:

  • Utilizing advanced omics tools for data-driven analysis of mitochondrial functions.
  • Applying omics integration to model systems to study trans-omics associations.
  • Analyzing interconnected subnetworks within mitochondria, including membrane potential, transport, and signaling.

Main Results:

  • Omics integration reveals a critical role for metal ion homeostasis in mitochondrial reprogramming.
  • Trans-omics associations are more robust and biologically relevant than single omics associations.
  • Adaptive mitochondrial reprogramming can interfere with cancer treatment.

Conclusions:

  • Omics integration provides new opportunities to study mitochondrial reprogramming in human disease.
  • Metal ion homeostasis is a key factor broadly impacting mitochondrial reprogramming.
  • Understanding mitochondrial form and function through omics integration is crucial for mitophagy research.