The excited states of the three retinal proteins, bovine rhodopsin (Rh), bacteriorhodopsin
(bR), and sensory rhodopsin II (sRII) were studied using the symmetry-adapted cluster …

We calculated the opsin shift due to the electrostatic interaction between tryptophan or
tyrosine residues and the chromophore by the perturbation method for various mutual …

The SAC-CI and QM/MM methods were applied to calculations of the absorption peaks of
the five retinal proteins, bovine rhodopsin (Rh), bacteriorhodopsin (bR) in BR, K, and KL …

Retinal is the photon absorbing chromophore of rhodopsin and other visual pigments,
enabling the vertebrate vision process. The effects of the protein environment on the primary …

We have investigated photoabsorption spectra of bovine rhodopsin and its mutants (E122Q
and E113Q) by hybrid quantum mechanical/molecular mechanical (QM/MM) calculations as …

We have investigated geometries and excitation energies of bovine rhodopsin and some of
its mutants by hybrid quantum mechanical/molecular mechanical (QM/MM) calculations in …

The mechanism of color tuning in the rhodopsin family of proteins has been studied by
comparing the optical properties of the light-driven proton pump bacteriorhodopsin (bR) and …

We considered a series of model systems for treating the photoabsorption of the 11-cis
retinal chromophore in the protonated Schiff-base form in vacuum, solutions, and the protein …

The explicit treatment of polarization as a many-body interaction in condensed-phase
systems represents a current problem in empirical force-field development. Although a …

Color-tuning mechanism of Human-Blue pigment, visual color-receptor in the cone cells of
the eye, has been investigated. Based on a previous Homology-modeling structure and …