LIPID AND SALT EFFECTS ON CARBOCYANINE DYE-INDUCED PHOTO-VOLTAGES IN BILAYER MEMBRANES

被引：11

作者：

BAKER, JA ^{[1
]}

DUCHEK, JR ^{[1
]}

HOOPER, RL ^{[1
]}

KOFTAN, RJ ^{[1
]}

HUEBNER, JS ^{[1
]}

机构：

[1] UNIV N FLORIDA, DEPT NAT SCI, JACKSONVILLE, FL 32216 USA

来源：

BIOCHIMICA ET BIOPHYSICA ACTA | 1979年 / 553卷 / 01期

基金：

美国国家卫生研究院;

关键词：

(Bilayer membrane); Carbocyanine dye; Cyanine dye; Photo-voltage change;

D O I：

10.1016/0005-2736(79)90026-9

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Voltage transients induced by flash illumination of bilayer membranes with sorbed dye, 3,3′-dimethyl-2,2′-oxacarbocyanine chloride (diO-C1-3-Cl), vary with membrane lipid composition and aqueous solution salt concentration. The voltage transients are probably induced by physical movements of sorbed dye molecules following photo-isomerization. Increased salt (NaCl and NaBr) concentrations in the aqueous solutions reduced the photo-voltage amplitudes by reducing the amount of dye sorbed to the membranes, and by decreasing the effective membrane thickness. The photo-voltage risetimes and falltimes varied systematically with salt concentration and membrane lipid composition, reflecting structural changes in the membrane's surface layer. © 1979.

引用

页码：1 / 10

页数：10

共 32 条

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