Symmetry matters for the electronic structure of core complexes from Rhodopseudomonas palustris and Rhodobacter sphaeroides PufX-.
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ABSTRACT:
SUBMITTER: Richter MF
PROVIDER: S-EPMC1871842 | biostudies-other | 2007 Apr
REPOSITORIES: biostudies-other
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Symmetry matters for the electronic structure of core complexes from Rhodopseudomonas palustris and Rhodobacter sphaeroides PufX-.
Richter M F MF Baier J J Prem T T Oellerich S S Francia F F Venturoli G G Oesterhelt D D Southall J J Cogdell R J RJ Köhler J J
Proceedings of the National Academy of Sciences of the United States of America 20070406 16
Low-temperature (1.4 K), single-molecule fluorescence-excitation spectra have been recorded for individual reaction center-light-harvesting 1 complexes from Rhodopseudomonas palustris and the PufX(-) strain of Rhodobacter sphaeroides. More than 80% of the complexes from Rb. sphaeroides show only broad absorption bands, whereas nearly all of the complexes from Rps. palustris also have a narrow line at the low-energy end of their spectrum. We describe how the presence of this narrow feature indica ...[more]
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