Range of diffusion coefficient for plastoquinol

Range 0.1 to 100 µm^2/sec
Organism Unspecified
Reference Mitchell R, Spillmann A, Haehnel W. Plastoquinol diffusion in linear photosynthetic electron transport. Biophys J. 1990 Oct58(4):1011-24. p.1011 right column 2nd paragraphPubMed ID19431770
Primary Source 9. Cramer, W. A., and A. R. Crofts. 1982. Electron and proton transport. In Photosynthesis, Energy Conversion by Plants and Bacteria. Govindjee, editor. Academic Press, New York. 1:387-467. AND 10. Haehnel, W. 1984. Photosynthetic electron transport in higher plants. Annu. Rev. Plant Physiol. 35: 659-693. AND 11. Millner, P. A., and J. Barber. 1984. Plastoquinone as a mobile redox carrier in the photosynthetic membrane. FEBS (Fed. Eur. Biochem Soc.) Lett. 169: 1-6. AND 12. Whitmarsh, J. 1986. Mobile electron carriers in thylakoids. In Encyclopedia of Plant Physiology, New Series, Photosynthesis III, Photosynthetic Membranes and Light Harvesting Systems. L. A. Staehelin and C. J. Arntzen, editors. Springer-Verlag, Berlin. 19: 508-527.
Comments The value of t (in the equation x^2=4Dt) chosen depends on whether plastoquinol diffusion is assumed to be involved in the rate determining oxidation of plastoquinol or in a faster preceding reaction. Due to this uncertainty, estimates for the lateral diffusion coefficient D lie in the extremely wide range of 10^-9 to 10^-6 cm^2/sec (primary sources)
Entered by Uri M
ID 107141