The total amount of protons stored in the chromatophore vesicles after a period of illumination is related to the ΔpH and to the buffering capacity of the vesicle interior. The decay kinetics in the dark of the established proton gradient depend on the membrane permeability for protons and on the concentration and proton affinity of the internal buffering groups. A model based on these assumptions, developed by J. Whitmarsh (1), has been applied to the experimental results in order to obtain a quantitative evaluation of these parameters.
Correlation Between Buffering Capacity and Proton Efflux in Bacterial Chromatophores / Turina, M. P.; Venturoli, G.; Melandri, B. A.. - ELETTRONICO. - (1990), pp. 1991-1994. [10.1007/978-94-009-0511-5_457]
Correlation Between Buffering Capacity and Proton Efflux in Bacterial Chromatophores
Turina, M. P.;Venturoli, G.;Melandri, B. A.
1990
Abstract
The total amount of protons stored in the chromatophore vesicles after a period of illumination is related to the ΔpH and to the buffering capacity of the vesicle interior. The decay kinetics in the dark of the established proton gradient depend on the membrane permeability for protons and on the concentration and proton affinity of the internal buffering groups. A model based on these assumptions, developed by J. Whitmarsh (1), has been applied to the experimental results in order to obtain a quantitative evaluation of these parameters.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
