Protein dynamics control the kinetics of initial electron transfer in photosynthesis

  • Wang H
  • Lin S
  • Allen J
 et al. 
  • 105


    Mendeley users who have this article in their library.
  • 167


    Citations of this article.


The initial electron transfer dynamics during photosynthesis have been studied in Rhodobacter sphaeroides reaction centers from wild type and 14 mutants in which the driving force and the kinetics of charge separation vary over a broad range. Surprisingly, the protein relaxation kinetics, as measured by tryptophan absorbance changes, are invariant in these mutants. By applying a reaction-diffusion model, we can fit the complex electron transfer kinetics of each mutant quantitatively, varying only the driving force. These results indicate that initial photosynthetic charge separation is limited by protein dynamics rather than by a static electron transfer barrier.

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document


  • Haiyu Wang

  • Su Lin

  • James P. Allen

  • Joann C. Williams

  • Sean Blankert

  • Christa Laser

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free