Selectivity of the Ca binding site in synaptosome Ca channels. Inhibition of Ca influx by multivalent metal cations.

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Selectivity of the Ca binding site in synaptosome Ca channels. Inhibition of Ca influx by multivalent metal cations

K-stimulated (voltage-dependent) influx of 45Ca was measured in synaptosomes (isolated presynaptic nerve terminals) from rat brain. Influx was terminated at 1 s with a rapid-filtration technique, so that most of the Ca uptake was mediated by inactivating ("fast") Ca channels (Nachshen, D. A., and Blaustein, M. P., 1980, J. Gen. Physiol., 76:709-728). This influx was blocked by multivalent catio...

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Activation of BK Channels in Rat Chromaffin Cells Requires Summation of Ca Influx From Multiple Ca Channels

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ژورنال

عنوان ژورنال: Journal of General Physiology

سال: 1984

ISSN: 0022-1295,1540-7748

DOI: 10.1085/jgp.83.6.941