pKa of the protonated Schiff base of bovine rhodopsin. A study with artificial pigments

Glutamic acid-113 serves as the retinylidene Schiff base counterion in bovine rhodopsin.

Thomas P. Sakmar, R R Franke, H. Gobind Khorana · Proceedings of the National Academy of Sciences · 1989 · 678 citations · Full text

Bioorganic Chemistry, Molecular Biology, Bovine Rhodopsin +17

Effect of Carboxylic Acid Side Chains on the Absorption Maximum of Visual Pigments

Eugene A. Zhukovsky, Daniel D. Oprian · Science · 1989 · 477 citations

Determinants of visual pigment absorbance: identification of the retinylidene Schiff's base counterion in bovine rhodopsin

Jeremy Nathans · Biochemistry · 1990 · 328 citations

Acid-base equilibrium of the Schiff base in bacteriorhodopsin

S. Druckmann, Michael Ottolenghi, A. Pande et al. · Biochemistry · 1982 · 173 citations

The absorption spectra of visual purple and of indicator yellow

R. J. Lythgoe · The Journal of Physiology · 1937 · 168 citations · Full text

Optical Properties, Spectroscopy, Natural Sciences +7