Richter, M.F., Baier, J., Prem, T., Oellerich, S., Francia, F., Venturoli, G., Oesterhelt, D., Southall, J., Cogdell, R. and Köhler, J. (2007) Symmetry matters for the electronic structure of core complexes from Rhodopseudomonas palustris and Rhodobacter sphaeroides PufX−. Proceedings of the National Academy of Sciences of the United States of America, 104(16), pp. 6661-6665. (doi: 10.1073/pnas.0611115104)
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Abstract
Low-temperature (1.4 K), single-molecule fluorescence-excitation spectra have been recorded for individual reaction center–light-harvesting 1 complexes from <i>Rhodopseudomonas</i> <i>palustris</i> and the PufX<sup>−</sup> strain of <i>Rhodobacter</i> <i>sphaeroides</i>. More than 80% of the complexes from <i>Rb</i>. <i>sphaeroides</i> show only broad absorption bands, whereas nearly all of the complexes from <i>Rps</i>. <i>palustris</i> also have a narrow line at the low-energy end of their spectrum. We describe how the presence of this narrow feature indicates the presence of a gap in the electronic structure of the light-harvesting 1 complex from <i>Rps</i>. <i>palustris</i>, which provides strong support for the physical gap that was previously modeled in its x-ray crystal structure.
| Item Type: | Articles |
|---|---|
| Keywords: | bacterial photosynthesis, light-harvesting complex, single-molecule spectroscopy |
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Cogdell, Professor Richard |
| Authors: | Richter, M.F., Baier, J., Prem, T., Oellerich, S., Francia, F., Venturoli, G., Oesterhelt, D., Southall, J., Cogdell, R., and Köhler, J. |
| Subjects: | Q Science > QR Microbiology |
| College/School: | College of Medical Veterinary and Life Sciences College of Medical Veterinary and Life Sciences > School of Molecular Biosciences |
| Journal Name: | Proceedings of the National Academy of Sciences of the United States of America |
| Publisher: | National Academy of Sciences |
| ISSN: | 0027-8424 |
| ISSN (Online): | 1091-6490 |
| Related URLs: |
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