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The Cell Membrane and Ionic Permeability
1991All living cells are surrounded by a cell membrane which separates the cellular contents from the outside medium. The organized contents of the cell, including the nucleus and such organelles as the mitochondria, Golgi apparatus, lysosomes, the endoplasmic reticulum, as well as the components of the cytoskeleton, exist in a watery medium — the ...
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The permeability properties of the parasite cell membrane.
Novartis Foundation symposium, 1999The asexual development of the malaria parasite takes place inside the host's erythrocyte, an environment that is different from that of most other eukaryotic organisms. The intense and rapid development of the parasite, as well as the homeostatic regulation of its cellular composition, require an extensive exchange of material between the parasite and
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Permeability of the Cell-to-Cell Membrane Channels in Mammalian Cell Junction
Science, 1979The channels in the junctions of various mammalian cell types—primary cultures and lines—were probed with a series of linear fluorescent amino acid and peptide molecules of different size and charge. Permeability is limited by probe size and electronegativity, these two factors apparently being related reciprocally.
Ian Simpson +2 more
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The Temperature Peaks of Cell Membrane Permeability
1987Any change in the structural organization of the cell membrane as the main permeation barrier, should be reflected in its transport behaviour. Studies of the temperature dependence of cellular water transport should therefore provide valuable information on the structural dynamics of the membrane.
Radivoje Srejić +2 more
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The Permeability of the Guard Cell Plasma Membrane and Tonoplast
Journal of Experimental Botany, 1990Uptake experiments and efflux compartmental analysis of plant hormones osmotica and toxins using isolated guard cells of Valerianella locusta and guard cell protoplast of Vicia faba were performed in order to study the permeability properties of guard cell plasma membrane and ...
Wolfram Hartung +2 more
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The Nanopore Connection to Cell Membrane Unitary Permeability
Traffic, 2005Artificial nanopores have recently emerged as versatile tools for analyzing and sorting single molecules at high speed. However, the biological cell has already developed a large set of sophisticated protein nanopores that are able to selectively translocate all types of molecules through membranes.
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Regulation of cell membrane permeability in Trypanosoma lewisi
Experimental Parasitology, 1966Abstract Fluorescent properties of tetracycline (TC) were used to study permeability changes of T. lewisi in various surroundings under phase and fluorescence microscopy. Mitochondria and the mitochondrial elements of the kinetoplast fluoresced bright yellow under fluorescence microscopy when tetracycline entered the cells.
H.G.du Buy +3 more
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The polar permeability of plant cell membranes to water [PDF]
Protoplasma, 1963 Unstirred layers of solution adjacent to a membrane cause a decrease in the effective driving forces on water (or solutes) during permeability-type experiments. These effects are discussed in relation to transcellular-osmosis studies from which it had been previously deduced that the permeability (strictly hydraulic conductivity) of the membranes of ...
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Cyclic peptides with heterocycles are cell membrane-permeable
C&EN Global Enterprise, 2016Peptides, including cyclic peptides, generally don’t cross cell membranes easily, a property that has limited their use in medicine. Researchers have now boosted the drug potential of cyclic peptides by incorporating a heterocycle into their rings. Andrei Yudin and coworkers at the University of Toronto adapted an existing reaction to convert linear ...
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Cell Membrane Permeability and Transport [PDF]
Biochemical Society Transactions, 1980 openaire +1 more source