Journal
JOURNAL OF BACTERIOLOGY
Volume 191, Issue 13, Pages 4473-4477Publisher
AMER SOC MICROBIOLOGY
DOI: 10.1128/JB.00262-09
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Formation of photosynthesis complexes in Rhodobacter sphaeroides is regulated in a redox-and light-dependent manner by the AppA/PpsR and PrrB/PrrA systems. While on the one hand, blue light is sensed by the flavin adenine dinucleotide-binding BLUF domain of AppA, on the other, light is absorbed by bacteriochlorophyll signals through PrrB/PrrA. We show that much smaller quantities initiate the AppA-mediated response to blue light than the bacteriochlorophyll-mediated response.
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