Intracellular Distribution of Free Potassium in Chironomus Salivary Glands
- 27 June 1975
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 188 (4195), 1321-1322
- https://doi.org/10.1126/science.1145200
Abstract
Potassium activities have been measured in the nucleus and cytoplasm of Chironomus salivary gland cells, using potassium-selective electrodes. The data provide the first rigorous evidence that potassium is at electrochemical equilibrium across the nuclear membrane. In addition, no difference in potassium chemical activity was found between nucleus and cytoplasm.Keywords
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