Molecular crowding and order in photosynthetic membranes

  • Kirchhoff H
  • 88


    Mendeley users who have this article in their library.
  • 69


    Citations of this article.


The integrity and maintenance of the photosynthetic apparatus in thylakoid membranes of higher plants requires lateral mobility of their components between stacked grana thylakoids and unstacked stroma lamellae. Computer simulations based on realistic protein densities suggest serious problems for lateral protein and plastoquinone diffusion especially in grana membranes, owing to strong retardation by protein complexes. It has been suggested that three structural features of grana thylakoids ensure efficient lateral transport: the organization of protein complexes into supercomplexes; the arrangement of supercomplexes into structured assemblies, which facilitates diffusion process in crowded membranes; the limitation of the diameter of grana discs to less than ∼500 nm, which keeps diffusion times short enough to support regulation of light harvesting and repair of photodamaged photosystem II. © 2008 Elsevier Ltd. All rights reserved.

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


  • Helmut Kirchhoff

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free