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Light-Harvesting, Redox Control, And Biomimicry Of The Photosynthetic Antennas Of Green Sulfur Bacteria, Gregory Scott Orf
Light-Harvesting, Redox Control, And Biomimicry Of The Photosynthetic Antennas Of Green Sulfur Bacteria, Gregory Scott Orf
Arts & Sciences Electronic Theses and Dissertations
The green sulfur bacteria (class Chlorobea) are obligately anaerobic photoautotrophic prokaryotes. Members of this bacterial class are found in anoxic, sulfur- or iron-rich environments such as hydrothermal vents and hot springs. These bacteria are champions of lowlight adaptation, with some species being able to thrive photosynthetically on less than eight photons hr-1 per pigment. We have studied the two photosynthetic antenna complexes from these organisms that are responsible for light capture: the chlorosome and the Fenna-Matthews-Olson (FMO) protein.
In regards to the chlorosome, we studied, using steady-state and time-resolved spectroscopic methods, the effect of incorporation of an expected, but as-yet-undiscovered-in-nature, …