Ca2+ transport by the synaptosomal plasma membrane Ca2+-ATPase and the effect of thioridazine
Palacios, J., Sepulveda, M.R., Lee, A.G. and Mata, A.M. (2004) Ca2+ transport by the synaptosomal plasma membrane Ca2+-ATPase and the effect of thioridazine. Biochemistry - US, 43, (8), 2353-2358. (doi:10.1021/bi0359473).
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Thioridazine inhibits the activity of the synaptic plasma membrane Ca2+-ATPase from pig brain and slightly decreases the rate of Ca2+ accumulation by synaptic plasma membrane vesicles in the absence of phosphate. However, in the presence of phosphate, thioridazine increases the rate of Ca2+ accumulation into synaptic plasma membrane vesicles. Phosphate anions diffuse through the membrane and form calcium phosphate crystals, reducing the free Ca2+ concentration inside the vesicles and the rate of Ca2+ leak. The higher levels of Ca2+ accumulation obtained in the presence of thioridazine could be explained by a reduction of the rate of slippage on the plasma membrane ATPase.
|Digital Object Identifier (DOI):||doi:10.1021/bi0359473|
|Subjects:||Q Science > QD Chemistry
Q Science > QH Natural history > QH301 Biology
|Divisions:||University Structure - Pre August 2011 > School of Biological Sciences
|Date Deposited:||07 Aug 2008|
|Last Modified:||06 Aug 2015 02:45|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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