Subcellular fractionation by differential centrifugation for mitochondrial studies.

Area of Science:

• Cell Biology
• Molecular Biology
• Biochemistry

Background:

• Subcellular fractionation is crucial for protein characterization in eukaryotic cells.
• Mitochondrial studies require precise isolation of cellular components.
• Existing fractionation methods can suffer from cross-contamination.

Purpose of the Study:

• To optimize a subcellular fractionation protocol for yeast cells.
• To improve the purity of mitochondrial fractions.
• To minimize cross-contamination between cellular fractions.

Main Methods:

• Optimized protocol for yeast cell subcellular fractionation.
• Immediate separation of fractions post-centrifugation.
• Careful removal of supernatant fractions near pellets.
• Additional homogenization of post-nuclear supernatant.

Main Results:

• Reduced cross-contamination between supernatant and pellet fractions.
• Enhanced purity of isolated cellular components, particularly mitochondria.
• Demonstrated scalability and adaptability of the protocol.

Conclusions:

• The optimized protocol yields purer fractions for yeast mitochondrial studies.
• The method minimizes protein cross-contamination effectively.
• This approach is adaptable for other cell types and organelle studies.