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Literature DB >> 284400

Change in nuclear potassium electrochemical activity and puffing of potassium-sensitive salivary chromosome regions during Chironomus development.

P Wuhrmann, H Ineichen, U Riesen-Willi, M Lezzi.

Abstract

Changes in nuclear K+ electrochemical activity and total nuclear K+ content in salivary glands of Chironomus tentans were measured with ion-selective microelectrodes based on valinomycin and with flameless atomic absorption spectrometry, respectively. The K+ activity increased by a factor of 2.6 and the total K+, by a factor of 1.5 as oligopausing larvae developed into prepupae. The extent of decondensation (puffing) of K+-sensitive regions in the polytene chromosomes underwent a parallel increase during this developmental event. In vitro culture of glands from oligopausing larvae resulted in similar changes with respect to nuclear K+ activity and puffing.

Entities: Chemical Species

Mesh：

Substances：
Potassium

Year: 1979 PMID： 284400 PMCID： PMC383057 DOI： 10.1073/pnas.76.2.806

Source DB: PubMed Journal: Proc Natl Acad Sci U S A ISSN： 0027-8424 Impact factor: 11.205

23 in total

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Authors: H KROEGER
Journal: Nature Date: 1963-12-21 Impact factor: 49.962

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Journal: Chromosoma Date: 1961 Impact factor: 4.316

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Authors: J A Coles; M Tsacopoulos
Journal: J Physiol Date: 1977-08 Impact factor: 5.182

4. Energy dispersive x-ray microanalysis of the electrolytes in biological bulk specimen. II. Age-dependent alterations in the monovalent ion contents of cell nucleus and cytoplasm in rat liver and brain cells.

Authors: C Pieri; I Z Nagy; V Z Nagy; C Giuli; C Bertoni-Freddari
Journal: J Ultrastruct Res Date: 1977-06

5. Distribution of Na+, K+ and Cl- between nucleus and cytoplasm in Chironomus salivary gland cells.

Authors: L G Palmer; M M Civan
Journal: J Membr Biol Date: 1977-05-06 Impact factor: 1.843

Review 6. Eukaryotic DNA polymerases.

Authors: A Weissbach
Journal: Annu Rev Biochem Date: 1977 Impact factor: 23.643

9. Heat shock phenomena in Chironomus tentans I. In vivo effects of heat, overheat, and quenching on salivary chromosome puffing.

Authors: M Lezzi; B Meyer; R Mähr
Journal: Chromosoma Date: 1981 Impact factor: 4.316

10. Elemental analysis of solid microscopic samples in the flameless atomic absorption cuvette.

Authors: M Lezzi
Journal: Histochemistry Date: 1979-08

Change in nuclear potassium electrochemical activity and puffing of potassium-sensitive salivary chromosome regions during Chironomus development.

1. CHEMICAL NATURE OF THE SYSTEM CONTROLLING GENE ACTIVITIES IN INSECT CELLS.

2. [Gene activity in the giant chromosomes of Chironomus tentans and its relation to development. I. Gene activation by ecdysone].

3. A method of making fine double-barrelled potassium-sensitive micro-electrodes for intracellular recording [proceedings].

4. Energy dispersive x-ray microanalysis of the electrolytes in biological bulk specimen. II. Age-dependent alterations in the monovalent ion contents of cell nucleus and cytoplasm in rat liver and brain cells.

5. Distribution of Na+, K+ and Cl- between nucleus and cytoplasm in Chironomus salivary gland cells.

Review 6. Eukaryotic DNA polymerases.

Review 7. Review: ion-selective electrodes in clinical chemistry.

8. Roles of divalent cations in maturation and activation of vertebrate oocytes.

9. Effects of ethionine on adenosine triphosphate levels and ionic composition of liver cell nuclei.

10. Mass isolation ofpolytene nuclei from Chironomus salivary glands.

1. Patchy accumulation of apical Na+ transporters allows cross talk between extracellular space and cell nucleus.

2. Evidence for the uptake of neuronally derived choline by glial cells in the leech central nervous system.

3. A gravimetric system for lyophilized samples in the sub-microgram range.

4. Bias current modifies the selectivity of liquid membrane ion-selective microelectrodes.

5. Role of H+ ions in volume and voltage of epithelial cell nuclei.

6. Ionic control of germination of Blastocladiella emersonii zoospores.

7. Modification of potassium movement through the retina of the drone (Apis mellifera male) by glial uptake.

8. Applicability of available ion-selective liquid-membrane microelectrodes to intracellular ion-activity measurements.

9. Heat shock phenomena in Chironomus tentans I. In vivo effects of heat, overheat, and quenching on salivary chromosome puffing.

10. Elemental analysis of solid microscopic samples in the flameless atomic absorption cuvette.