Abstract

Vision is initiated when a photon is absorbed by the 11-cis retinal chromophore in the visual pigment rhodopsin. The adsorption maximum of 11-cis retinal in rhodopsin is strongly red-shifted by the presence of the protein (380→500 nm). This shift is caused by the presence of a protonated Schiff base (C=NH) linkage to the protein and by additional protein-chromophore perturbations. The primary photoproduct, bathorhodopsin, is formed by a rapid (<6-ps) 11-cis → 11-trans excited state double bond isomerization.

© 1986 Optical Society of America

PDF Article
More Like This
The primary photoisomerization in vision occurs in femtoseconds

R. A. Mathies, R. W. Schoenlain, L. A. Peteanu, and C. V. Shank
QWF3 Quantum Electronics and Laser Science Conference (QELS) 1992

Initial steps of vision

Ming Yan, R. R. Alfano, L. Rothberg, T. M. Jedju, D. Manor, G. Weng, and R. Callender
QWF4 Quantum Electronics and Laser Science Conference (QELS) 1992

Conical Intersection Dynamics in Rhodopsin and its Analog Isorhodopsin

D. Polli, D. Brida, C. Manzoni, K. M. Spillane, M. Garavelli, P. Kukura, O. Weingart, R. A. Mathies, and G. Cerullo
JSIV_2_4 International Quantum Electronics Conference (IQEC) 2013