Background: Cyanobacteria use multiple PSII-D1 isoforms to adapt to environmental conditions. Results: D1:2 achieves higher quantum efficiency of water oxidation and biomass accumulation rate at high light versus D1:1; the latter is more efficient at low light due to less charge recombination. Conclusion: A functional advantage for D1:1 is revealed for the first time. Significance: Improved photochemical efficiency at low light suggests an evolutionary advantage to retain D1:1. © 2013 by The American Society for Biochemistry and Molecular Biology, Inc.
Publication Source (Journal or Book title)
Journal of Biological Chemistry
Vinyard, D., Gimpel, J., Ananyev, G., Cornejo, M., Golden, S., Mayfield, S., & Dismukes, G. (2013). Natural variants of photosystem II subunit D1 tune photochemical fitness to solar intensity. Journal of Biological Chemistry, 288 (8), 5451-5462. https://doi.org/10.1074/jbc.M112.394668