Inhibition of Postoxidative Calcium Release in Corn Mitochondria by Inorganic Phosphate 1
AUTOR(ES)
Earnshaw, M. J.
RESUMO
Respiration drives the accumulation of a small amount of calcium in corn (Zea mays L.) mitochondria, and this calcium is released when respiration ceases. A postenergized addition of phosphate leads to phosphate uptake and enhaced calcium retention. Oligomycin, KCN, 2,4-dinitrophenol, or mersalyl are without effect on the phosphate-induced calcium retention. Addition of phosphate also inhibits the release of endogenous phosphate which normally accompanies the calcium. It is suggested that passive phosphate uptake retards the release of endogenous phosphate which is complexed with the calcium.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=366511Documentos Relacionados
- Ultrastructural Evidence for Calcium Phosphate Deposition by Isolated Corn Shoot Mitochondria 1
- Contracted State as an Energy Source for Ca Binding and Ca + Inorganic Phosphate Accumulation by Corn Mitochondria 1
- Phosphate-induced Stimulation of Acceptorless Respiration in Corn Mitochondria 1
- Oxidation of Reduced Nicotinamide Adenine Dinucleotide Phosphate by Isolated Corn Mitochondria 1
- Inhibition of Phosphate Uptake in Corn Roots by Aluminum-Fluoride Complexes1
