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Related Concept Videos

Animal Mitochondrial Genetics02:59

Animal Mitochondrial Genetics

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Among all the organelles in an animal cell, only mitochondria have their own independent genomes. Animal mitochondrial DNA is a double-stranded, closed-circular molecule with around 20,000 base pairs. Mitochondrial DNA is unique in that one of its two strands, the heavy, or H, -strand is guanine rich, whereas the complementary strand is cytosine rich and called the light, or L, -strand. Compared to nuclear DNA, mitochondrial DNA has a very low percentage of non-coding regions and is marked by...
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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.
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Mitochondrial protein import is powered by two distinct energy sources: ATP hydrolysis and electrochemical potential across the inner membrane. Newly synthesized precursors are bound by cytosolic chaperones of the Hsp70 family, which guide them to the import receptors on the mitochondrial surface. Utilizing the energy of ATP hydrolysis, Hsp70 chaperones transfer these precursors to the TOM receptors on the mitochondrial outer membrane.
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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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Updated: Jan 17, 2026

Author Spotlight: Advancing Techniques and Discoveries in Protein Synthesis and Assembly Through Innovative Mitochondrial Research
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Author Spotlight: Advancing Techniques and Discoveries in Protein Synthesis and Assembly Through Innovative Mitochondrial Research

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Manipulating mitochondrial gene expression.

Drishan Dahal1, Luis D Cruz-Zargoza1,2, Peter Rehling1,3,4,5

  • 1Department of Cellular Biochemistry, 84922 University Medical Center Göttingen , Humboldtallee 23, D-37073, Göttingen, Germany.

Biological Chemistry
|September 18, 2025
PubMed
Summary
This summary is machine-generated.

Mitochondria generate cellular energy via oxidative phosphorylation (OXPHOS). This review highlights new genetic tools to study and manipulate mitochondrial gene expression, crucial for understanding OXPHOS-related diseases.

Keywords:
RNAgene expressiongenetic toolsmitochondria

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Area of Science:

  • Cellular Biology
  • Biochemistry
  • Genetics

Background:

  • Mitochondria are vital for cellular energy production through oxidative phosphorylation (OXPHOS).
  • Dysfunctional OXPHOS is implicated in severe human diseases, particularly in high-energy-demand tissues.
  • OXPHOS assembly requires coordinated gene expression from both nuclear and mitochondrial genomes.

Purpose of the Study:

  • To review recent advancements in genetic manipulation strategies for mitochondria.
  • To address the challenges posed by limited genetic accessibility in studying mitochondrial gene expression.
  • To explore novel tools for targeting and modifying mitochondrial genetic processes.

Main Methods:

  • Review of emerging technologies for genetic manipulation of mitochondria.
  • Analysis of strategies targeting various stages of mitochondrial gene expression.
  • Discussion of techniques to overcome genetic accessibility limitations.

Main Results:

  • Emerging technologies provide new capabilities for manipulating mitochondrial gene expression.
  • Recent strategies expand the ability to genetically target mitochondria.
  • Progress is being made in understanding the regulation of mitochondrial gene expression.

Conclusions:

  • Advanced genetic tools are crucial for dissecting mitochondrial function and dysfunction.
  • Targeting mitochondrial genetics offers new avenues for therapeutic development.
  • Further research into mitochondrial gene regulation is essential for human health.