This protocol describes a technique to measure Ca(2+) release from the nonmitochondrial intracellular Ca(2+) stores in monolayers of saponin-permeabilized cells cultured in 12-well 4-cm(2) clusters. The (45)Ca(2+)-flux technique described here can only be applied to cell types that still adhere to the plastic after exposing them to saponin. We describe the permeabilization procedure, the loading of the nonmitochondrial Ca(2+) stores with (45)Ca(2+), and the subsequent (45)Ca(2+) efflux.
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| http://dx.doi.org/10.1101/pdb.prot073189 | DOI Listing |
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