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Related Concept Videos

Animal Mitochondrial Genetics02:59

Animal Mitochondrial Genetics

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...
Export of Mitochondrial and Chloroplast Genes02:19

Export of Mitochondrial and Chloroplast Genes

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 irrespective...
Applications of Molecular Taxonomy01:20

Applications of Molecular Taxonomy

Molecular taxonomy has revolutionized the understanding and classification of bacteria, providing precise insights into their diversity, evolutionary relationships, and ecological roles. By utilizing molecular techniques such as DNA sequencing and fingerprinting, researchers have made significant strides in various fields related to bacterial studies.Resolving Taxonomic AmbiguitiesMolecular taxonomy has been instrumental in distinguishing closely related bacterial species initially thought to...
Non-nuclear Inheritance01:29

Non-nuclear Inheritance

Most DNA resides in the nucleus of a cell. However, some organelles in the cell cytoplasm⁠—such as chloroplasts and mitochondria⁠—also have their own DNA. These organelles replicate their DNA independently of the nuclear DNA of the cell in which they reside. Non-nuclear inheritance describes the inheritance of genes from structures other than the nucleus.
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,...

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Updated: Jun 10, 2026

High-Throughput Image-Based Quantification of Mitochondrial DNA Synthesis and Distribution
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High-Throughput Image-Based Quantification of Mitochondrial DNA Synthesis and Distribution

Published on: May 5, 2023

[Mitochondrial DNA: properties and applications].

R Kefi-Ben Atig1, S Hsouna, E Beraud-Colomb

  • 1UR26/04: Exploration Moléculaire des Maladies Orphelines d'origine Génétique-Institut Pasteur de Tunis, 13 Place Pasteur BP 74-1002 Tunis Belvédère. rym.kefi@pasteur.rns.tn

Archives De L'Institut Pasteur De Tunis
|August 17, 2010
PubMed
Summary
This summary is machine-generated.

Mitochondrial DNA (mtDNA) is crucial for cellular energy and metabolism. Its unique features make it valuable in anthropology, forensics, and understanding diseases like diabetes and cancer.

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Area of Science:

  • Cellular Biology
  • Genetics

Context:

  • Mitochondria are vital organelles for cellular energy production, metabolism regulation, apoptosis, and oxidative stress control.
  • Mitochondrial DNA (mtDNA) possesses unique characteristics: high copy number, maternal inheritance, and a high mutation rate, making it a key research subject.

Purpose:

  • To highlight the multifaceted applications of mitochondrial DNA (mtDNA) in various scientific disciplines.
  • To underscore the significance of mtDNA in anthropological genetics, forensic science, and understanding human pathologies.

Summary:

  • Mitochondrial DNA (mtDNA) is extensively utilized in anthropological genetics to track genetic variations, expansions, migrations, and gene flow patterns.
  • In forensic science, mtDNA serves as a powerful tool for identifying human remains due to its high polymorphism and mutation rates.
  • mtDNA mutations are increasingly linked to human diseases, including oxidative phosphorylation disorders, maternally inherited diabetes and deafness (MIDD), Type 2 diabetes, neurodegenerative disorders, heart failure, and cancer.

Impact:

  • mtDNA analysis provides critical insights into human evolutionary history and population dynamics.
  • The application of mtDNA in forensics enhances identification capabilities for human remains.
  • Understanding mtDNA's role in pathology opens avenues for diagnosing and potentially treating mitochondrial-related diseases.