Subpicosecond protein backbone changes detected during the green-absorbing proteorhodopsin primary photoreaction.

@article{Amsden2007SubpicosecondPB,
  title={Subpicosecond protein backbone changes detected during the green-absorbing proteorhodopsin primary photoreaction.},
  author={Jason J. Amsden and Joel M Kralj and Logan R Chieffo and Xihua Wang and Shyamsunder Erramilli and Elena N. Spudich and John L. Spudich and Lawrence D. Ziegler and Kenneth J Rothschild},
  journal={The journal of physical chemistry. B},
  year={2007},
  volume={111 40},
  pages={11824-31}
}
Recent studies demonstrate that photoactive proteins can react within several picoseconds to photon absorption by their chromophores. Faster subpicosecond protein responses have been suggested to occur in rhodopsin-like proteins where retinal photoisomerization may impulsively drive structural changes in nearby protein groups. Here, we test this possibility by investigating the earliest protein structural changes occurring in proteorhodopsin (PR) using ultrafast transient infrared (TIR… CONTINUE READING
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