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Дата последнего поиска статьи во внешних источниках: 18 апреля 2017 г.
Авторы:NEGULYAEV,
YA; SAVOKHINA,
GA; VEDERNIKOVA,
EA
Аннотация:Calcium-permeable channels with a slope conductance of 9 pS were revealed in excised inside-out patches of cultured HeLa cells. Over a potential range from -80 to -10 mV, unitary inward currents were recorded with 110 Ca2+ in the pipette in artificial ''intracellular'' solutions containing impermeant anions. Channel activity was not considerably affected by varying free calcium concentration between 0.01 and 10 mumol/l in cytosol-like solution. In experiments with low spontaneous activity of calcium-permeable channels in the inside-out patch, it could be increased by the application of 5-10 mumol/l inositoltrisphosphate to the inner membrane surface.