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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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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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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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Adrenergic Receptors: ɑ Subtype01:31

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Adrenoceptors are classified into α and ꞵ classes based on their potencies to catecholamine agonists. α-adrenoceptors show the following order of catecholamine potency:
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β-adrenoceptors have varied sensitivities towards adrenaline, noradrenaline, and isoprenaline. The order of agonist potency is as follows:
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Diabetes mellitus is a chronic metabolic disorder characterized by high blood glucose levels due to inadequate insulin production, insulin resistance, or both. The condition affects millions worldwide and can significantly impact their health and quality of life.
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Mitochondrial Subtype Identification and Characterization.

Joseph R Daniele1, Kartoosh Heydari2, Andrew Dillin1

  • 1Department of Molecular & Cellular Biology, University of California, Berkeley, Berkeley, California.

Current Protocols in Cytometry
|June 27, 2018
PubMed
Summary
This summary is machine-generated.

This study introduces a novel flow cytometry method to analyze individual mitochondria in C. elegans. This technique quantifies mitochondrial subtypes based on membrane potential, size, and substructure for better understanding of cellular health and aging.

Keywords:
flow cytometryindividual organelle analysisisolated organellemitochondrial subtypestissue-specific organelle analysis

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Area of Science:

  • Cell Biology
  • Mitochondrial Biology
  • Aging Research

Background:

  • Healthy mitochondria are crucial for cellular functions like metabolism and stress resistance.
  • Mitochondrial membrane potential (Δψ) is a key indicator of mitochondrial health.
  • Current methods measure average cellular Δψ, missing individual mitochondrial variations.

Purpose of the Study:

  • To develop a flow cytometry method for analyzing individual mitochondrial characteristics.
  • To quantify and classify mitochondrial subtypes based on Δψ, size, and substructure.
  • To enable detailed study of mitochondrial heterogeneity within cells.

Main Methods:

  • Utilized flow cytometry on the small animal model C. elegans.
  • Developed a methodology to measure individual mitochondrial membrane potential (Δψ).
  • Enabled classification of mitochondrial subtypes based on multiple organelle features.

Main Results:

  • Successfully quantified and classified mitochondrial subtypes in C. elegans.
  • Demonstrated the ability to analyze mitochondrial heterogeneity at the organelle level.
  • Established a new tool for studying mitochondrial bioenergetics.

Conclusions:

  • This new flow cytometry methodology allows for detailed analysis of mitochondrial heterogeneity.
  • Future applications include studying mitochondrial roles in human diseases and aging.
  • The method is applicable across various models, including C. elegans, cell cultures, and human biopsies.