Name: purification of mitochondria from yeast cells
Uploaded: 2009-08-24T16:00:00
Description: Watch this Scientific Journal Video about Purification of Mitochondria from Yeast Cells at JoVE.com

This work was supported by grants from the CIHR and the NSERC of Canada. V.I.T. is a CIHR New Investigator and Concordia University Research Chair in Genomics, Cell Biology and Aging.

Materials and methods
Yeast strains and growth conditions
The wild-type strain BY4742 (MAT&alpha; his3&Delta;1 leu2&Delta;0 lys2&Delta;0 ura3&Delta;0) was grown in rich YEPD medium (1% yeast extract, 2% peptone, 2% glucose). Cells were cultured at 30&deg;C with rotational shaking at 200 rpm in Erlenmeyer flasks at a "flask volume/medium volume" ratio of 5:1.
Isolation of crude mitochondrial fraction
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<li>Grow 1 L of the wild-typ...

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This method enables the high-yield isolation of pure mitochondria from yeast cells. Mitochondria purified by this method are essentially free of contamination by other organelles and retain their structural and functional integrity after their purification. The described method yields mitochondria that are suitable for cell-free reconstitution of essential mitochondrial processes. These highly pure mitochondria can also be used for the analysis of mitochondrial structure and functions, mitochondrial proteome and lipidome...

purification of mitochondria from yeast cells

Mitochondria are the main site of ATP production during aerobic metabolism in eukaryotic non-photosynthetic cells1. These complex organelles also play essential roles in apoptotic cell death2, cell survival3, mammalian development4, neuronal development and function4, intracellular signalling5, and longevity regulation6. Our understanding of these complex biological processes controlled by mitochondria relies on robust methods for assessing their morphology, their protein and lipid composition, the integrity of their DNA, and their numerous vital functions. The budding yeast Saccharomyces cerevisiae, a genetically and biochemically manipulable unicellular eukaryote with annotated genome and well-defined proteome, is a valuable model for studying the molecular and cellular mechanisms underlying essential biological functions of mitochondria. For these types of studies, it is crucial to have highly pure mitochondria. Here we present a detailed description of a rapid and effective method for purification of yeast mitochondria. This method enables the isolation of highly pure mitochondria that are essentially free of contamination by other organelles and retain their structural and functional integrity after their purification. Mitochondria purified by this method are suitable for cell-free reconstitution of essential mitochondrial processes and can be used for the analysis of mitochondrial structure and functions, mitochondrial proteome and lipidome, and mitochondrial DNA.

Watch this Scientific Journal Video about Purification of Mitochondria from Yeast Cells at JoVE.com

Purification of Mitochondria from Yeast Cells

We describe a rapid and effective method for purification of mitochondria from the yeast Saccharomyces cerevisiae. This method enables the high-yield isolation of pure mitochondria that are essentially free of contamination by other organelles and retain their structural and functional integrity after their purification.

Mitochondria are the main site of ATP production during aerobic metabolism in eukaryotic non-photosynthetic cells1. These complex organelles also play ...

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