LATERAL DIFFUSION OF VISUAL PIGMENTS IN TOAD (BUFO-MARINUS) RODS AND IN CATFISH (ICTALURUS-PUNCTATUS) CONES

被引：27

作者：

GUPTA, BD

WILLIAMS, TP

机构：

[1] FLORIDA STATE UNIV,INST MOLEC BIOPHYS,TALLAHASSEE,FL 32306

[2] INDIAN INST TECHNOL,DEPT PHYS,NEW DELHI 110016,INDIA

来源：

JOURNAL OF PHYSIOLOGY-LONDON | 1990年 / 430卷

关键词：

D O I：

10.1113/jphysiol.1990.sp018303

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

1. The lateral diffusion coefficient, D, was determined for visual pigments in red rods, green rods and red‐sensitive cones with a photon‐counting microspectrophotometer. 2. A novel protocol that involved the placement on a photoreceptor of a single micromeasuring/bleaching beam permitted the determination of D of the pigment. 3. Demonstration that D for red rods compared very well with values obtained by other workers using other means validated the protocol. 4. Applied to green rods, the protocol gave a value of D that was about 80% greater than that for red rods. 5. D for cone pigment was found to be slightly less than that of red rod pigment. 6. The dichroic ratio of cones and the average orientation of the chromophore in the cone lamellae were 1.71 and 28.4 deg, respectively. 7. The photosensitivity at lambda max of the red‐sensitive cones was found to be about 16% less than that of red rods. © 1990 The Physiological Society

引用

页码：483 / 496

页数：14

共 26 条

[1] LONG-LIVED PHOTOPRODUCTS OF GREEN-ROD PIGMENT OF FROG, RANA-TEMPORARIA [J].

BOWMAKER, JK .

VISION RESEARCH, 1977, 17 (01) :17-23

[2] ROTATIONAL AND LATERAL DIFFUSION OF MEMBRANE-PROTEINS [J].

CHERRY, RJ .

BIOCHIMICA ET BIOPHYSICA ACTA, 1979, 559 (04) :289-327

[3]

Dartnall H.J.A, 1972, PHOTOCHEMISTRY VISIO, V7, P122, DOI [10.1007/978-3-642-65066-6_4, DOI 10.1007/978-3-642-65066-6_4]

[4] THE SPECTRAL SENSITIVITY AND PHOTOPIGMENT OF THE GREEN RODS IN THE FROGS RETINA [J].

DONNER, KO ;

REUTER, T .

VISION RESEARCH, 1962, 2 (05) :357-372

[5] ROTATIONAL AND TRANSLATIONAL DIFFUSION IN MEMBRANES [J].

EDIDIN, M .

ANNUAL REVIEW OF BIOPHYSICS AND BIOENGINEERING, 1974, 3 :179-201

[6]

ELSON EL, 1979, NEUROSCIENCES 4TH ST, P691

[7] PHOTORECEPTOR COUPLING IN RETINA OF THE TOAD, BUFO-MARINUS .2. PHYSIOLOGY [J].

GOLD, GH .

JOURNAL OF NEUROPHYSIOLOGY, 1979, 42 (01) :311-328

[8] ABSORPTION OF LIGHT IN PHOTORECEPTORS - TRANSVERSE INCIDENCE [J].

GUPTA, BD .

BIOPHYSICS OF STRUCTURE AND MECHANISM, 1981, 8 (1-2) :35-43

[9] LATERAL DIFFUSION AND ELECTRON-TRANSFER IN THE MITOCHONDRIAL INNER MEMBRANE [J].

HACKENBROCK, CR .

TRENDS IN BIOCHEMICAL SCIENCES, 1981, 6 (06) :151-154

[10] ADENYLATE-CYCLASE ACTIVATION BY THE BETA-ADRENERGIC RECEPTORS AS A DIFFUSION-CONTROLLED PROCESS [J].

HANSKI, E ;

RIMON, G ;

LEVITZKI, A .

BIOCHEMISTRY, 1979, 18 (05) :846-853

← 1 2 3 →