Journal of Bioenergetics and Biomembranes

, Volume 26, Issue 1, pp 5–15

Structure and function of the photosynthetic reaction center fromRhodobacter sphaeroides

  • U. Ermler
  • H. Michel
  • M. Schiffer
Article

DOI: 10.1007/BF00763216

Cite this article as:
Ermler, U., Michel, H. & Schiffer, M. J Bioenerg Biomembr (1994) 26: 5. doi:10.1007/BF00763216

Abstract

The three-dimensional structure of the photosynthetic reaction center fromRhodobacter sphaeroides is described. The reaction center is a transmembrane protein that converts light into chemical energy. The protein has three subunits: L, M, and H. The mostly helical L and M subunits provide the scaffolding and the finely tuned environment in which the chromophores carry out electron transfer. The details of the protein-chromophore interactions are from studies of a trigonal crystal form that diffracted to 2.65-Å resolution. Functional studies of the multi-subunit complex by site-specific replacement of key amino acid residues are summarized in the context of the molecular structure.

Key words

Photosynthetic reaction centerRhodobacter sphaeroidesx-ray crystallographyprotein structuremembrane protein electron transportproton transport

Copyright information

© Plenum Publishing Corporation 1994

Authors and Affiliations

  • U. Ermler
    • 1
  • H. Michel
    • 1
  • M. Schiffer
    • 2
  1. 1.Max-Planck-Institut für Biophysik, Abt. Molekulare MembranbiologieFrankfurt/M 71Germany
  2. 2.Argonne National LaboratoryCenter for Mechanistic Biology and BiotechnologyArgonne