D1 protein variants in Photosystem II from Thermosynechococcus elongatus studied by low temperature optical spectroscopy
In Photosystem II (PSII) from Thermosynechococcus elongatus, high-light intensity growth conditions induce the preferential expression of the psbA3 gene over the psbA1 gene. These genes encode for the D1 protein variants labeled D1:3 and D1:1, respectively. We have compared steady state absorption and photo-induced difference spectra at < 10 K of PSII containing either D1:1 or D1:3. The following differences were observed. (i) The pheophytin Qx band was red-shifted in D1:3 (547.3 nm) compared...[Show more]
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|Source:||Biochimica et Biophysica Acta: Bioenergetics|
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