Free fatty acids regulate the uncoupling protein and alternative oxidase activities in plant mitochondria

Francis E. Sluse, Andréa M. Almeida, Wieslawa Jarmuszkiewicz, Anibal E. Vercesi

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

73 Citas (Scopus)

Resumen

Two energy-dissipating systems, an alternative oxidase and an uncoupling protein, are known to exist in plant mitochondria. In tomato fruit mitochondria linoleic acid, a substrate for the uncoupling protein, inhibited the alternative oxidase-sustained respiration and decreased the ADP/O ratio to the same value regardless of the level of alternative oxidase activity. Experiments with varying concentrations of linoleic acid have shown that inhibition of the alternative oxidase is more sensitive to the linoleic acid concentration than the uncoupling protein activation. It can be proposed that these dissipating systems work sequentially during the life of the plant cell, since a high level of free fatty acid-induced uncoupling protein activity excludes alternative oxidase activity.

Idioma originalInglés
Páginas (desde-hasta)237-240
Número de páginas4
PublicaciónFEBS Letters
Volumen433
N.º3
DOI
EstadoPublicada - 21 ago 1998

Áreas temáticas de ASJC Scopus

  • Biofísica
  • Biología estructural
  • Bioquímica
  • Biología molecular
  • Genética
  • Biología celular

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