By George Wald (auth.), Helmut Langer (eds.)
This booklet is a record of a four-day Symposium at the Biochemistry and body structure of visible Pigments, which happened instantly after the VIth overseas Congress on Photobiology, held in Bochum, Federal Republic of Germany, in August 1972. This assembly, which introduced jointly approximately 50 investigators of varied elements of the visible procedure, used to be dedicated to the visible cells of either vertebrates and invertebrates. while the foreign Symposium at the Biochemistry of the Retina, held at Nij megen, The Netherlands, in 1968, had targeting vertebrate photoreceptors, this Symposium handled invertebrate photoreceptors to boot, in order that staff in each one box may well develop into accustomed to contemporary growth within the different zone. The papers provided on the Symposium have been divided into six major themes, to every of which a half-day consultation was once dedicated. The six components of this e-book, following the intro ductory lecture, basically correspond to those classes. as well as the invited con tributions, the quantity encompasses a variety of brief communications by means of different partici pants and contributions by way of invited individuals, who have been not able to wait. the amount closes, as did the Symposium, with a common dialogue, ready and moderated via S. L. BONTING, within which an test used to be made to combine numerous new findings, and to reconcile sure issues of disagreement.
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Additional info for Biochemistry and Physiology of Visual Pigments: Symposium Held at Institut fur Tierphysiologie, Ruhr-Universitat Bochum/W. Germany, August 27–30, 1972
Acknowledgement. The work reported herein was supported by grants No. EY00209 and No. EY00471 from the Eye Institute of the National Institutes of Health. References 1. ABRAHAMSON. E. W. , J. R. WIESENFELD: The structure, spectra and reactivity of visual pigments. l, ed. H. J. A. DARTNALL, pp. 67-121. Springer, Berlin-Heidelberg-New York (1972). 2. FAGER, R. , P. SEJNOWSKI, E. W. ABRAHAMSON: Aqueous cyanoborohydride reduction of the. rhodopsin cohromophore. Biochem. Biophys. Res. Comm. 47, 1244-1247 (1972).
Determination of free amino groups in rod outer segment membranes (nMol/mg lyophilisate) AAA (n =2) DNS-Cl Lys 122 127 Eth-NH2 216 227 70 60 Ser Total TNBS (n = 5) AAA TNBS 408 414 418 414 423 ±8 ±20 ±9 ±7 ±6 ginal amino group, it is active at physiological pH and room temperature and it is strictly specific for primary amino groups. 5 and remove the hydrolysis products after about half an hour at room temperature by centrifugation. The sediment is resuspended in the same buffer and a second cycle is started by another addition of a reagent, and so on.
WORTHINGTON: Planar liquid-like arrangement of photopigment molecules in frog retinal receptor disk membranes. J. Mol. BioI. ~, 417-439 (1969). 5. MOODY, M. F. , J. R. PARRIS: The discrimination of polarized light by octopus: Behavioral and morphological study. Z. Vergl. Physiol. 44, 268-291 (1961). 6. : unpublished observations (1972). 7. G. L. W. ABRAHAMSON: Lipid to protein chromophore transfer in the photolysis of visual pigments. ) ill, 256-257 (1969). 8. , S. FUTTERMAN: Properties of rhodopsin dependent on associated phospholipid.