title: Architecture and mechanism of the light-harvesting apparatus of purple bacteria.
abstract: Photosynthetic organisms fuel their metabolism with light energy and have developed for this purpose an efficient apparatus for harvesting sunlight. The atomic structure of the apparatus, as it evolved in purple bacteria, has been constructed through a combination of x-ray crystallography, electron microscopy, and modeling. The detailed structure and overall architecture reveals a hierarchical aggregate of pigments that utilizes, as shown through femtosecond spectroscopy and quantum physics, elegant and efficient mechanisms for primary light absorption and transfer of electronic excitation toward the photosynthetic reaction center.
authors.affiliation: Beckman Institute and Department of Physics, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
authors.forename: X
authors.initials: X
authors.lastname: Hu
authors.forename: A
authors.initials: A
authors.lastname: Damjanović
authors.forename: T
authors.initials: T
authors.lastname: Ritz
authors.forename: K
authors.initials: K
authors.lastname: Schulten
mesh_terms: D018360:Crystallography, X-Ray; D008854:Microscopy, Electron; D008958:Models, Molecular; D045322:Photosynthetic Reaction Center Complex Proteins / Q000737:chemistry* / Q000378:metabolism / Q000648:ultrastructure*; D016992:Rhodobacter / Q000737:chemistry* / Q000648:ultrastructure*
chemical_list: D045322:Photosynthetic Reaction Center Complex Proteins