Investigating the Energy Transfer Dynamics in the Baseplate of Green Photosynthetic Bacteria using 2D Electronic Spectroscopy
ORAL
Abstract
The structure of the baseplate, a pigment-protein complex that mediates energy transfer in green photosynthetic bacteria, is not fully understood. The baseplate cannot be isolated from the chlorosome light harvesting antenna, but their spectral signatures can be separated with femtosecond two-dimensional electronic spectroscopy (2DES)[1]. In this work, 2D spectra of the baseplate in a mutant of Chlorobaculum tepidum, which was previously found to contain dimeric pigments[2], will be compared to 2D spectra of Chloroflexus aurantiacus to characterize the pigment interactions and energy transfer pathways in both samples.
References
[1] J. Dostál et al., J. Phys. Chem. Lett. 2014, 5, 10, 1743-1747.
[2] J. T. Nielsen et al., Nat. Commun. 2016, 7, 12454.
References
[1] J. Dostál et al., J. Phys. Chem. Lett. 2014, 5, 10, 1743-1747.
[2] J. T. Nielsen et al., Nat. Commun. 2016, 7, 12454.
*This material is based upon work supported by the National Science Foundation Graduate Research Fellowship Program under Grant No. DGE 1144083 and an international travel allowance through the Graduate Research Opportunities Worldwide (GROW). Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation. This work was supported by a research grant from the Swedish Research Council.
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Presenters
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Alexa Rae Carollo
- Department of Chemistry, University of Colorado Boulder