Biochemistry: Chromatic adaptation of photosynthetic membranes Academic Article uri icon

Overview

MeSH Major

  • Bacterial Chromatophores
  • Light
  • Light-Harvesting Protein Complexes
  • Photosynthesis
  • Rhodospirillum

abstract

  • Many biological membranes adapt in response to environmental conditions. We investigated how the composition and architecture of photosynthetic membranes of a bacterium change in response to light, using atomic force microscopy. Despite large modifications in the membrane composition, the local environment of core complexes remained unaltered, whereas specialized paracrystalline light-harvesting antenna domains grew under low-light conditions. Thus, the protein mixture in the membrane shows eutectic behavior and can be mimicked by a simple model. Such structural adaptation ensures efficient photon capture under low-light conditions and prevents photodamage under high-light conditions.

publication date

  • July 15, 2005

Research

keywords

  • Academic Article

Identity

Language

  • eng

Digital Object Identifier (DOI)

  • 10.1126/science.1110879

PubMed ID

  • 16020739

Additional Document Info

start page

  • 484

end page

  • 7

volume

  • 309

number

  • 5733