POTASSIUM TRANSPORT IN NEUROSPORA. I. INTRACELLULAR SODIUM AND POTASSIUM CONCENTRATIONS, AND CATION REQUIREMENTS FOR GROWTH.

@article{Slayman1964POTASSIUMTI,
  title={POTASSIUM TRANSPORT IN NEUROSPORA. I. INTRACELLULAR SODIUM AND POTASSIUM CONCENTRATIONS, AND CATION REQUIREMENTS FOR GROWTH.},
  author={Carolyn W. Slayman and Edward L. Tatum},
  journal={Biochimica et biophysica acta},
  year={1964},
  volume={88},
  pages={
          578-92
        }
}
Adenine Nucleotide Levels in Neurospora, as Influenced by Conditions of Growth and by Metabolic Inhibitors
TLDR
For all three adenine nucleotides, the transients associated with sudden respiratory blockade include overshoots or undershoots of several minutes duration, which are consistent with feedback regulation of glycolysis by the AMP/ATP ratio.
Potassium Transport in Neurospora
TLDR
At low extracellular pH (4–6), net uptake of potassium by Neurospora is a simple exponential process which obeys Michaelis kinetics as a function of [K]o; the data can be fitted satisfactorily by two different two-site models (one involving a carrier site and a modifier site, the other an allosteric model).
Net Uptake of Potassium in Neurospora Exchange for sodium and hydrogen ions
TLDR
It is suggested that a single transport system handles both net K uptake and K/K exchange, but that the affinity of the external site for potassium is influenced by the species of ion being extruded.
Potassium Transport in Neurospora Evidence for a multisite carrier at high pH
At low extracellular pH (4-6), net uptake of potassium by Neurospora is a simple exponential process which obeys Michaelis kinetics as a function of [K],. At high pH, however, potassium uptake
Potassium-proton symport inNeurospora: kinetic control by pH and membrane potential
TLDR
Detailed study of the effects of [K+]o and pHo on theI–V curve for K+-H+ symport has revealed that increasing membrane potential systematicallydecreases the apparent affinity of the transporter for K+, but increases affinity for protons (Km range: for [K]o, 15–45 μM; for [H+]O, 10–35 nM).
Potassium fluxes in Neocosmospora vasinfecta.
  • K. Budd
  • Biology
    Journal of general microbiology
  • 1975
TLDR
It is considered that equilibrium with external K+ is attained primarily by the regulation of K+ influx, and that this may be the principal mechanism controlling cytoplasmic K+ levels.
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Methods have been developed to study the intracellular Na and K concentrations in E. coli, strain K-12, and have been shown to be functions of the extracellular cation concentrations and the age of the bacterial culture.
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TLDR
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TLDR
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TLDR
It is shown that during metabolism of sugars, phosphate is actively transported into the yeast cell by a mechanism specifically involving glycolysis reactions, and the pH optimum for the phosphate uptake of 6.5 is shifted to the acid side by potassium.
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The present studies are discussed in relationship to ion permeability and lactose metabolism in N. crassa, and to galactoside permeability in Escherichia coli.
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TLDR
The principal objective of the research reported in this paper was to acquire information about the activation by K+ ions through the application of kinetic studies and to determine whether the activation of rabbit muscle pyruvic phosphoferase was essential or only stimulatory.
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