Croatica Chemica Acta, Vol. 59 No. 3, 1986.
Original scientific paper
Mcmbrane Potential as a Coupling Agent for Photophosphorylation by Bacteriorhodopsin and ATP-ase Containing Artificial Membrane
D. Juretić
; Faculty of Education, University of Rijeka, 51000 Rijeka, Croatia, Yugoslavia
F. Sokolić
; »Ruđer Bošković" Institute, Zagreb, Croatia, Yugoslavia
Abstract
The steady state kinetic and thermodynamic properties of a »minimal« photosynthetic system containing two different proton
pumps in the planar artificial membrane have been considered.
The light activated proton pump, modelled after bacteriorhodopsin
(bR), and' the ATP-using proton pump, modelled after Neurospora
ATP-ase, were interacting only through the common photopotential
developed by bR. In the stationary state of the illuminated coupled system the following properties were calculated by Hill's diagram method: proton flux for each macromolecule, photopotential, total effective force, efficiency of free energy storage, efficiency of light free energy utilization, entropy production, and adenylate energy charge in the internal compartment.
Keywords
Hrčak ID:
177290
URI
Publication date:
25.7.1986.
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