Mitochondrial Ca2+ sequestration and precipitation revisited: Minireview

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

The ability of mitochondria to sequester and retain divalent cations in the form of precipitates consisting of organic and inorganic moieties has been known for decades. Of these cations, Ca2+ has emerged as a major player in both signal transduction and cell death mechanisms, and, as a consequence, the importance of mitochondria in these processes was soon recognized. Early studies showed considerable effort in identifying the mechanisms of Ca2+ sequestration, precipitation and release by uncouplers of oxidative phosphorylation; however, relatively little information was obtained, and these processes were eventually taken for granted. Here, we re-examine: (a) the thermodynamic aspects of mitochondrial Ca2+ uptake and release, (b) the insufficiently explained effect of uncouplers in inducing mitochondrial Ca2+ release, (c) the thermodynamic effects of exogenously added adenine nucleotides on mitochondrial Ca2+ uptake capacity and precipitate formation, and (d) the elusive nature of the Ca 2+-phosphate precipitates formed in the mitochondrial matrix.

Original languageEnglish
Pages (from-to)3637-3651
Number of pages15
JournalFEBS Journal
Volume277
Issue number18
DOIs
Publication statusPublished - Sep 2010

Fingerprint

Thermodynamics
Precipitates
Mitochondria
Adenine Nucleotides
Oxidative Phosphorylation
Divalent Cations
Cations
Signal Transduction
Signal transduction
Cell Death
Phosphates
Cell death

Keywords

  • adenine nucleotides
  • Ca uniporter
  • complexation
  • electron microscopy
  • Na/Ca exchanger
  • phosphocitrate
  • polyphosphate
  • precipitation
  • thermodynamics
  • uncoupler

ASJC Scopus subject areas

  • Biochemistry
  • Cell Biology
  • Molecular Biology
  • Medicine(all)

Cite this

Mitochondrial Ca2+ sequestration and precipitation revisited : Minireview. / Chinopoulos, C.; Ádám-Vizi, V.

In: FEBS Journal, Vol. 277, No. 18, 09.2010, p. 3637-3651.

Research output: Contribution to journalArticle

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