Creat membership Creat membership
Sign in

Forgot password?

Confirm
  • Forgot password?
    Sign Up
  • Confirm
    Sign In
Creat membership Creat membership
Sign in

Forgot password?

Confirm
  • Forgot password?
    Sign Up
  • Confirm
    Sign In
Collection

toTop

If you have any feedback, Please follow the official account to submit feedback.

Turn on your phone and scan

home > search >

Chromophore vibrations during isomerization of photoactive yellow protein: analysis of normal modes and energy transfer

Author:
Yu, X  Leitner, DM  


Journal:
CHEMICAL PHYSICS LETTERS


Issue Date:
2004


Abstract(summary):

Ultrafast studies of fluorescence decay of photoactive yellow protein (PYP) and several mutants by Mataga et al. [Chem. Phys. Lett. 352 (2002) 220] reveal coherent oscillations of about 140 cm(-1), attributed to largely chromophore motions, and 50 cm(-1), corresponding more to protein matrix vibrations. We identify these vibrations by normal mode analysis. Vibrational modes near 130 cm(-1) are relatively localized to the chromophore, consistent with interpretation of the ultrafast data. Dynamical coupling between the chromophore and protein matrix enhances twisting of the thioester group near 130 cm(-1) compared to the isolated chromophore. We also compute rates of vibrational energy transfer rates in PYP and discuss its influence on the photoisomerization kinetics. (C) 2004 Elsevier B.V. All rights reserved.


Page:
181---186


Similar Literature

Submit Feedback

This function is a member function, members do not limit the number of downloads