Spectroscopy on the B850 band of individual light-harvesting 2 complexes of Rhodopseudomonas acidophila II. Exciton states of an elliptically deformed ring aggregate

Citation
M. Matsushita et al., Spectroscopy on the B850 band of individual light-harvesting 2 complexes of Rhodopseudomonas acidophila II. Exciton states of an elliptically deformed ring aggregate, BIOPHYS J, 80(3), 2001, pp. 1604-1614
Citations number
23
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Biochemistry & Biophysics
Journal title
BIOPHYSICAL JOURNAL
ISSN journal
0006-3495 → ACNP
Volume
80
Issue
3
Year of publication
2001
Pages
1604 - 1614
Database
ISI
SICI code
0006-3495(200103)80:3<1604:SOTBBO>2.0.ZU;2-T
Abstract
Spectroscopy of individual light-harvesting 2 complexes from purple photosy nthetic bacteria revealed a deformation of the circular complex into C-2 sy mmetry. The present work relates the geometry of the deformed aggregate to its spectroscopic properties. Different models of elliptical deformation ar e discussed and compared with the experimental findings. It is shown that t he model with smaller interpigment distances, where the curvature of the el lipse is small, provides the best agreement with fluorescence excitation sp ectra of individual complexes.