Color tuning in rhodopsins: the mechanism for the spectral shift between bacteriorhodopsin and sensory rhodopsin II.

@article{Hoffmann2006ColorTI,
  title={Color tuning in rhodopsins: the mechanism for the spectral shift between bacteriorhodopsin and sensory rhodopsin II.},
  author={Michael H. Hoffmann and Marius Wanko and Paul Strodel and Peter H. Koenig and Thomas Frauenheim and Klaus Schulten and Walter Thiel and Emad Tajkhorshid and Marcus Elstner},
  journal={Journal of the American Chemical Society},
  year={2006},
  volume={128 33},
  pages={10808-18}
}
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 the light detector sensory rhodopsin II (sRII). Despite a high structural similarity, the maximal absorption is blue-shifted from 568 nm in bR to 497 nm in sRII. The molecular mechanism of this shift is still a matter of debate, and its clarification sheds light onto the general mechanisms of color tuning in retinal… CONTINUE READING

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