Measurement of the lateral diffusion coefficients of ubiquinones in lipid vesicles by fluorescence quenching of 12-(9-anthroyl)stearate.
The lateral diffusion coefficients of some ubiquinone homologues have been measured in phospholipid vesicles exploiting the fluorescence quenching of the probe 12-(9-anthroyl)stearate by the quinones. Diffusion coefficients higher than 10(-6) cm2 X s-1 have been found at 25 degrees C, compatible with the localization of the ubiquinones in the low-viscosity midplane region of the bilayer.
D004058:Diffusion; D005453:Fluorescence; D005456:Fluorescent Dyes; D008051:Lipid Bilayers / Q000378:metabolism; D008081:Liposomes / Q000378:metabolism*; D013229:Stearic Acids; D014451:Ubiquinone / Q000378:metabolism*
D005456:Fluorescent Dyes; D008051:Lipid Bilayers; D008081:Liposomes; D013229:Stearic Acids; D014451:Ubiquinone; C030310:12-(9-anthroyl)stearic acid