ISSN:
1432-1017
Keywords:
Valinomycin
;
Lipid membranes
;
Fluorescence
;
Relaxation methods
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Physics
Notes:
Summary Dansyllysine-valinomycin, a fluorescent analogue of the ionophore valinomycin was synthesized and incorporated into black lipid membranes. Its concentration inside the membrane was measured fluorometrically and was also determined from electrical relaxation experiments, which were analyzed on the basis of a previously proposed carrier model. The results of both methods agreed within less than one order of magnitude. This appears satisfactory in view of the sources of error inherent in both procedures. A conductance increment per carrier molecule of about 3 · 10−17 Ω−1 was obtained for dansyllysine-valinomycin in diphytanoyllecithin membranes at 25
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00863705
