Phosphate dependent, ruthenium red insensitive CA2+ uptake in mung bean mitochondria

Biochemical and Biophysical Research Communications
K E Akerman, A L Moore

Abstract

Energy linked Ca2+ uptake into mung bean mitochondria has been studied. Using arsenazo III as a monitor of extramitochondrial Ca2+, we observe a respiration-linked uptake of Ca2+ which requires phosphate and is insensitive to ruthenium red. The rate of uptake is of the order of 5 nmol/mg protein/min. Acetate, sulphate and thiosulphate are unable to support Ca2+ uptake. The results suggest that although plant mitochondria accumulate Ca2+ in an energy dependent fashion, it is not via a simple electrophoretic uniport mechanism.

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Citations

Mar 1, 1990·Plant Physiology·R PistocchiD Zannoni
Dec 24, 2015·Frontiers in Plant Science·Marco ZancaniAngelo Vianello
May 30, 1998·Biochimica Et Biophysica Acta·E N BazhenovaR A Zvyagilskaya
Dec 14, 2018·Frontiers in Physiology·Valentina De ColMarco Zancani
Mar 21, 1998·The Journal of Biological Chemistry·E N BazhenovaN E Saris
Nov 13, 2001·The Journal of Biological Chemistry·Silvio ArpagausRoland Braendle

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