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Assessment of Submitochondrial Protein Localization in Budding Yeast Saccharomyces cerevisiae
08:55

Assessment of Submitochondrial Protein Localization in Budding Yeast Saccharomyces cerevisiae

Published on: July 19, 2021

Interspecies transplacement of mitochondria in yeasts

M Osuský1, J Kissová, L Kovác

  • 1Department of Biochemistry, Comenius University, Bratislava, Slovakia.

Current Genetics
|July 1, 1997
PubMed

Insights

Researchers restored respiration in a Saccharomyces cerevisiae mutant by transferring mitochondria from other yeast species. This mitochondrial transplacement technique successfully enabled respiration in the rho(0) strain using diverse Saccharomyces donor mitochondria.

Area of Science:

  • * Yeast genetics and molecular biology.
  • * Mitochondrial genetics and respiration.
  • * Cellular biology and organelle transplantation.

Background:

  • * Respiration-deficient yeast strains (rho(0)) lack functional mitochondria, hindering energy production via aerobic pathways.
  • * Mitochondrial function is crucial for cellular energy metabolism and survival in many organisms.
  • * Understanding interspecies mitochondrial compatibility is key for genetic engineering and synthetic biology.

Purpose of the Study:

  • * To investigate the feasibility of restoring respiratory function in a rho(0) Saccharomyces cerevisiae strain.
  • * To determine the compatibility of mitochondria from various Saccharomyces species for functional transplacement.
  • * To establish a method for creating respiration-competent cybrids through mitochondrial DNA transfer.

Main Methods:

  • * Incubation of Saccharomyces cerevisiae rho(0) protoplasts with isolated mitochondria from diverse Saccharomyces species.
  • * Selection of respiration-competent cybrids on non-fermentable media.
  • * Confirmation of nuclear and mitochondrial DNA origins using pulsed-field gel electrophoresis and restriction analysis.

Main Results:

  • * Successful restoration of respiration in Saccharomyces cerevisiae rho(0) mutants was achieved.
  • * Mitochondrial transplacement was successful using mitochondria from Saccharomyces bayanus, S. capensis, S. delbrueckii, S. exiguus, S. italicus, and S. oviformis.
  • * Cybrids contained nuclear DNA from S. cerevisiae and mitochondrial DNA from donor species.

Conclusions:

  • * Mitochondrial transplacement is an effective method for restoring respiration in yeast mutants.
  • * Mitochondria from several Saccharomyces species are compatible with the Saccharomyces cerevisiae nuclear background.
  • * This study provides a foundation for interspecies mitochondrial manipulation in yeast.

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