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Related Concept Videos

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...
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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...

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Related Experiment Video

Updated: May 13, 2026

Labelling and Visualization of Mitochondrial Genome Expression Products in Baker's Yeast Saccharomyces cerevisiae
08:33

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Published on: April 11, 2021

Analysis of mitochondrial gene expression.

Jessica E Accari1, Sam Manna, Paul R Fisher

  • 1Department of Microbiology, La Trobe University, Bundoora, Australia.

Methods in Molecular Biology (Clifton, N.J.)
|March 16, 2013
PubMed
Summary

Dictyostelium discoideum is a key model for studying mitochondrial gene expression. Researchers detail methods to analyze mitochondrial transcription and RNA processing in this organism.

Area of Science:

  • Mitochondrial biology
  • Molecular genetics
  • Eukaryotic gene expression

Background:

  • Dictyostelium discoideum is a widely used model organism for investigating mitochondrial functions and related diseases.
  • Previous research has established a comprehensive map of mitochondrial transcription and RNA processing in Dictyostelium.
  • Key elements like the transcription start site, RNA polymerase, and RNA processing sites have been identified.

Purpose of the Study:

  • To present the methodologies utilized for studying mitochondrial gene transcription in Dictyostelium.
  • To elucidate the processes involved in mitochondrial RNA processing within this model system.

Main Methods:

  • Detailed description of experimental protocols for analyzing mitochondrial transcription initiation.

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Last Updated: May 13, 2026

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  • Explanation of techniques used to identify and characterize RNA processing events in mitochondria.
  • Methods for mapping transcription and cleavage sites of mitochondrial RNAs.

    • Main Results:

    • The study provides a clear outline of the experimental approaches.
    • The described methods enable detailed investigation of mitochondrial RNA synthesis and maturation.
    • These techniques are crucial for understanding the regulation of mitochondrial gene expression.

    Conclusions:

    • The described methods are essential for advancing the study of mitochondrial biology in Dictyostelium.
    • Understanding these processes contributes to the broader knowledge of mitochondrial gene expression and its role in disease.
    • This work provides a foundation for future research into mitochondrial RNA regulation.