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PMID: 14042995 Published · ppublish English Journal Article

SOME ELECTRICAL PROPERTIES OF A NUCLEAR MEMBRANE EXAMINED WITH A MICROELECTRODE.

The Journal of general physiology ·Vol. 46 ·1963-07-00 ·Pages 1123-40

LOEWENSTEIN WR, KANNO Y

Abstract

Electrical potential and resistance were measured with microelectrodes in in situ and isolated nuclei of gland cells of Drosophila flavorepleta. The nucleus-cytoplasm boundary was found to be rather impermeable to ion diffusion. It presents a resistance of the order of 1 ohm cm(2) and sustains a "resting" potential, the nucleoplasm being about 15 mv negative with respect to the cytoplasm. Both the resistance and potential appear to be associated with the nuclear membrane: the potential declines to zero and the resistance to a fraction of its original value, when the membrane is perforated experimentally.

Keywords
CELL NUCLEUS DROSOPHILA ELECTROPHYSIOLOGY IONS PROTOPLASM SALIVARY GLANDS
MeSH Terms
Animals Cell Nucleus Cytoplasm Drosophila Electrophysiology Ions Membrane Potentials Microelectrodes Nuclear Envelope Salivary Glands
Chemicals
Ions
Authors & Affiliations
2 authors, click to expand affiliations / ORCID
LOEWENSTEIN W R
KANNO Y
References (13)
13 references, click to expand
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Article Info
Journal
The Journal of general physiology
Abbr.
J Gen Physiol
ISSN
0022-1295
DOI
10.1085/jgp.46.6.1123
Published
1963-07-00
Pages
1123-40
Language
English
Region
United States
NLM ID
2985110R
PMCID
PMC2195317
Subset
OM
External Links
PubMed source DOI: 10.1085/jgp.46.6.1123 PMC Full Text View journal details
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