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2019
Transport of solutes across biological membranes is essential for cellular life. This process is mediated by membrane transport proteins which move nutrients, waste products, certain drugs and ions into and out of cells. Secondary active transporters couple the transport of substrates against their concentration gradients with the transport of other ...
Patrick D, Bosshart, Dimitrios, Fotiadis
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Transport of solutes across biological membranes is essential for cellular life. This process is mediated by membrane transport proteins which move nutrients, waste products, certain drugs and ions into and out of cells. Secondary active transporters couple the transport of substrates against their concentration gradients with the transport of other ...
Patrick D, Bosshart, Dimitrios, Fotiadis
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Active membranes for active transport
Journal of Theoretical Biology, 1967Abstract A model is proposed wherein membrane subunit ingestion accounts for observed membrane function in active transport. Biological significance is given to the known rapid rate of synthesis of cell membranes, the role of calcium ion in providing membrane elasticity and binding energy for the membrane.
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Active Transport and Metabolism
Protoplasma, 1967By definition active transport requires metabolic energy. In most cases of active transport, however, the energy consumption is too small to give a measureable contribution to the overall energy consumption of the cell. In such cases the active nature of the transport must be inferred from, for instance, net transport against an electrocbemical ...
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Liberating nitrate transport activity
Nature Plants, 2021Managing root nitrate transport is required by plants to meet ongoing nitrogen demands, and is coordinated by bidirectional communication between roots and shoots. Shoot-derived signals can now be directly linked to the activation of nitrate transport by CEPH, a targeted NRT2;1-specific phosphatase.
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Active ion transport by mitochondria
Protoplasma, 1967The ability of isolated mitochondria to accumulate very large amounts of Ca++ by an active transport mechanism was discovered by V a s i n g t o n and M u r p h y in 1961 [1]. The accumulation process was found to be blocked by respiratory inhibitors and by uncouplers of oxidative phosphorylation, and thus was completely dependent on electron transport
C S, Rossi, E, Carafoli, A L, Lehninger
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Biologically active, synthetic ion transporters
Chem. Soc. Rev., 2007AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
George W, Gokel, I Alexandru, Carasel
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A Human Serotonin Transporter Mutation Causes Constitutive Activation of Transport Activity
Molecular Pharmacology, 2003A rarely occurring variant of human serotonin transporter (hSERT) was tested for its functional consequences in HeLa and COS-7 cells. The variant, in which Ile-425 is converted to Val, was significantly different from wild type with respect to its catalytic properties.
Fusun, Kilic +2 more
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Active Transportation Increases Adherence to Activity Recommendations
American Journal of Preventive Medicine, 2006Levels of physical activity (PA) contribute to health status and outcomes directly and indirectly via the effects of PA on obesity and other risk factors. Much past surveillance has focused on leisure-time physical activity (LTPA), but this may bias estimates of prevalence. This study explores inclusion of non-leisure-time walking and bicycling (NLTWB)
David, Berrigan +4 more
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Asia Pacific Journal of Public Health, 2011
Increasing heat may impede peoples’ ability to be active outdoors thus limiting active transport options. Co-benefits from mitigation of and adaptation to global warming should not be assumed but need to be actively designed into strategies.
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Increasing heat may impede peoples’ ability to be active outdoors thus limiting active transport options. Co-benefits from mitigation of and adaptation to global warming should not be assumed but need to be actively designed into strategies.
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Adsorption and active transport
Experientia, 1960On demontre l'identite formelle de l'equation de Langmuir (pour l'adsorption) et de celle de Michaelis-Menten, toutes deux fondees sur la loi de «mass action». Cette demonstration justifie la vue d'apres laquelle l'accumulation des ions par les cellules vivantes selon la loi de Michaelis-Menten represente une liaison d'adsorption au niveau ...
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