Frontispiece: Light‐Driven Active Ion Transport
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چکیده
منابع مشابه
An Enzymatic Ion Exchange Model for Active Sodium Transport* By
An enzymatic ion exchange model for active sodium transport is described. Kinetic equations relating net flux to time, and to concentration difference across the actively transporting membrane are derived. The second of these equations is tested, using the isolated frog skin in the "short-circuit" apparatus of Ussing. Reasonable lineaxity, as predicted by this equation, is observed. The passive...
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Experiments giving evidence of active Na and Cl ion fluxes across large canine blood vessel walls (aorta, vena cava) in vitro have been presented. The information has been obtained using ion tracer techniques after Ussing and with diffusion cells of the Hogben type. The available data suggest that the membranes are satisfactorily oxygenated by the bathing solutions saturated with oxygen at atmo...
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Several factors affecting K* transport by rabbit heart mitochondria were examined, using a K-sensitive electrode. The histone fractions f2a and j3-7 produced an energy-dependent efflux of K*. Inorganic phosphate was required for optimal activity; Km for phosphate was 60 /AM. Both rate and extent of K + efflux decreased as K concentration in the reaction medium was increased. The direction of va...
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متن کاملAn Enzymatic Ion Exchange Model for Active Sodium Transport
An enzymatic ion exchange model for active sodium transport is described. Kinetic equations relating net flux to time, and to concentration difference across the actively transporting membrane are derived. The second of these equations is tested, using the isolated frog skin in the "short-circuit" apparatus of Ussing. Reasonable linearity, as predicted by this equation, is observed. The passive...
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ژورنال
عنوان ژورنال: Chemistry – A European Journal
سال: 2020
ISSN: 0947-6539,1521-3765
DOI: 10.1002/chem.202086161