Biochemistry and Physiology of Visual Pigments

1. Front Matter

   Pages I-XIII

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2. Introductory Lecture

   1. Visual Pigments and Photoreceptor Physiology

      • George Wald

      Pages 1-13

3. Pigment Structure and Chemical Properties

   1. Front Matter

      Pages 15-15

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   2. Theory of Retinal and Related Molecules

      • M. Karplus

      Pages 17-18

   3. Conformations of 11-cis Retinal

      • W. Sperling

      Pages 19-28

   4. The Binding Site of Retinaldehyde in Native Rhodopsin

      • W. J. de Grip, S. L. Bonting, F. J. M. Daemen

      Pages 29-38

   5. Chromophore Migration after Illumination of Rhodopsin

      • S. L. Bonting, J. P. Rotmans, F. J. M. Daemen

      Pages 39-44

4. Photolysis and Intermediates of the Pigments

   1. Front Matter

      Pages 45-45

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   2. The Kinetics of Early Intermediate Processes in the Photolysis of Visual Pigments

      • Edwin W. Abrahamson

      Pages 47-56

   3. Photoselection and Linear Dichroism of Retinal Isomers and Visual Pigments

      • Joram Heller, Joseph Horwitz

      Pages 57-68

   4. Studies on Intermediates of Visual Pigments by Absorption Spectra at Liquid Helium Temperature and Circular Dichroism at Low Temperatures

      • Tôru Yoshizawa, Shinri Horiuchi

      Pages 69-81

   5. Interconversion of Metarhodopsins

      • T. P. Williams, B. N. Baker, D. J. Eder

      Pages 83-88

   6. Temperature Dependence of Slow Thermal Reactions during the Bleaching of Rhodopsin in the Frog Retina

      • Ch. Baumann, R. Reinheimer

      Pages 89-99

   7. Metarhodopsin III

      • R. A. Weale

      Pages 101-104

   8. The Effect of Urea upon the Photosensitivity of Bovine Rhodopsin

      • Aubrey Knowles

      Pages 105-111

5. Regeneration of the Pigments

   1. Front Matter

      Pages 113-113

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   2. Interrelations of Visual Pigments and “Vitamins A” in Fish and Amphibia

      • C. D. B. Bridges

      Pages 115-121

   3. A Catalytic Role of Dihydroriboflavin in the Geometrical Isomerization of all-trans Retinal

      • Sidney Futterman, Martha H. Rollins

      Pages 123-130

   4. Active Site and Enzymological Studies on the Components of the Visual Cycle

      • M. Akhtar, S. Amer, M. D. Hirtenstein

      Pages 131-138

   5. Formation of Isorhodopsin from Photolyzed Rhodopsin in Darkness

      • J. P. Rotmans, F. J. M. Daemen, S. L. Bonting

      Pages 139-145

This book is a report of a four-day Symposium on the Biochemistry and Physiology of Visual Pigments, which took place immediately after the VIth International Congress on Photobiology, held in Bochum, Federal Republic of Germany, in August 1972. This meeting, which brought together about 50 investigators of various aspects of the visual process, was devoted to the visual cells of both vertebrates and invertebrates. Whereas the International Symposium on the Biochemistry of the Retina, held at Nij­ megen, The Netherlands, in 1968, had concentrated on vertebrate photoreceptors, this Symposium dealt with invertebrate photoreceptors as well, so that workers in each field could become acquainted with recent progress in the other area. The papers presented at the Symposium were divided into six main topics, to each of which a half-day session was devoted. The six parts of this book, following the intro­ ductory lecture, essentially correspond to these sessions. In addition to the invited con­ tributions, the volume contains a number of short communications by other partici­ pants and two contributions by invited participants, who were unable to attend. The volume closes, as did the Symposium, with a General Discussion, prepared and moderated by S. L. BONTING, in which an attempt was made to integrate various new findings, and to reconcile certain points of disagreement.

• Biochemie
• Lichtsinn
• Physiology of Visual Pigments
• Pigments
• biochemistry
• physiology

• Institut für Tierphysiologie, Ruhr-Universität Bochum, 463 Bochum-Querenburg, W. Germany

  Helmut Langer

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