I M Antonikov

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Transmembrane potential (TMP) of synaptic vesicles (SV) from the rat brain was registered by means of potential-sensitive fluorescent probe 3,3' dipropylthiocarbocyanine iodide (dis-C3-(5)). It was found that Mg-ATP generates TMP on the SV membrane suspended in sucrose-buffer medium. TMP did not appear if 0.25 M sucrose medium was replaced by 0.125 M KCl(More)
The applicability of the potential-sensitive dye diS-C3-(5) for the study of A23187 + Ca2+ induced plasma membrane hyperpolarization was tested in rat brain synaptosomes. An appropriate dye synaptosome ratio was chosen for the fluorescence titration dye in Ca-free Krebs-Ringer solution. The fluorescence intensity of the probe was increased upon the addition(More)
The effects of Mg-ATP, EGTA, EDTA and dicyclohexylcarbodiimide on the changes in the intensity of light scattering were studied in rat brain synaptic vesicles (SV) suspended in saccharose-buffer medium. Specific interactions between SV and isolated synaptic junctional complex were observed in the presence of Mg-ATP and calmodulin. An in vitro model of(More)
Mg-ATPase (1 mM) induces a decrease in the intensity of light scattering (I1) at 620 nm of rat brain synaptic vesicles (SV) suspended in sucrose, with this decrease being indicative of the swelling of the vesicles. The Mg-ATPase-induced swelling appears to be associated with the function of H+-ATPase of SV membranes, since it is completely abolished by the(More)
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