Biochemistry (Moscow)

, Volume 75, Issue 3, pp 297–303

Induction of permeability of the inner membrane of yeast mitochondria

  • M. V. Kovaleva
  • E. I. Sukhanova
  • T. A. Trendeleva
  • K. M. Popova
  • M. V. Zylkova
  • L. A. Uralskaya
  • R. A. Zvyagilskaya
Review

DOI: 10.1134/S0006297910030053

Cite this article as:
Kovaleva, M.V., Sukhanova, E.I., Trendeleva, T.A. et al. Biochemistry Moscow (2010) 75: 297. doi:10.1134/S0006297910030053

Abstract

The current view on apoptosis is given, with a special emphasis placed on apoptosis in yeasts. Induction of a non-specific permeability transition pore (mPTP) in mammalian and yeast mitochondria is described, particularly in mitochon-dria from Yarrowia lipolytica and Dipodascus (Endomyces) magnusii yeasts, which are aerobes possessing the fully competent respiratory chain with all three points of energy conservation and well-structured mitochondria. They were examined for their ability to induce an elevated permeability transition of the inner mitochondrial membrane, being subjected to virtually all conditions known to induce the mPTP in animal mitochondria. Yeast mitochondria do not form Ca2+-dependent pores, neither the classical Ca2+/Pi-dependent, cyclosporin A-sensitive pore even under deenergization of mitochondria or depletion of the intramitochondrial nucleotide pools, nor a pore induced in mammalian mitochondria upon concerted action of moderate Ca2+ concentrations (in the presence of the Ca2+ ionophore ETH129) and saturated fatty acids. No pore formation was found in yeast mitochondria in the presence of elevated phosphate concentrations at acidic pH values. It is concluded that the permeability transition in yeast mitochondria is not coupled with Ca2+ uptake and is differently regulated compared to the mPTP of animal mitochondria.

Key words

mitochondria yeasts Yarrowia lipolytica Dipodascus (Endomyces) magnusii Ca2+ inorganic phosphate saturated fatty acids pH membrane potential swelling pore apoptosis 

Abbreviations

CsA

cyclosporin A

ETH129

specific Ca2+-ionophore N,N,N′N′-tetra(cyclohexyl)diamide of diglycolic acid

mPTP

(mitochondrial permeability transition pore), non-specific permeability of the inner mitochondrial membrane

Pi

inorganic phosphate

YMUC

yeast mitochondrial unspecific channel

Copyright information

© Pleiades Publishing, Ltd. 2010

Authors and Affiliations

  • M. V. Kovaleva
    • 1
  • E. I. Sukhanova
    • 1
  • T. A. Trendeleva
    • 1
  • K. M. Popova
    • 1
  • M. V. Zylkova
    • 1
  • L. A. Uralskaya
    • 1
  • R. A. Zvyagilskaya
    • 1
  1. 1.Bach Institute of BiochemistryRussian Academy of SciencesMoscowRussia

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