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Quantum efficiency distributions of photo-induced side-pathway donor oxidation at cryogenic temperature in Photosystem II.

Hughes, Joseph; Rutherford, William; Sugiura, Miwa; Krausz, Elmars


We monitored illuminated-minus-dark absorption difference spectra in the range of 450-1100 nm induced by continuous illumination at 8 K of photosystem II (PSII) core complexes from Thermosynechococcus elongatus. The photo-induced oxidation of the side-path donors Cytb559, β-carotene and chlorophyll Z, as well as the concomitant stable (t 1/2 > 1 s) reduction of the first plastoquinone electron acceptor, QA (monitored by the well-known 'C550' shift), were quantified as a function of the absorbed...[Show more]

CollectionsANU Research Publications
Date published: 2008
Type: Journal article
Source: Photosynthesis Research
DOI: 10.1007/s11120-008-9330-1


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