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Charge separation in photosystem II core complexes induced by 690-730 nm excitation at 1.7 K

Hughes, Joseph; Smith, Paul; Pace, Ronald; Krausz, Elmars


The illumination of oxygen-evolving PSII core complexes at very low temperatures in spectral regions not expected to excite P680 leads to charge separation in a majority of centers. The fraction of centers photoconverted as a function of the number of absorbed photons per PSII core is determined by quantification of electrochromic shifts on PheoD1. These shifts arise from the formation of metastable plastoquinone anion (QA-) configurations. Spectra of concentrated samples identify absorption in...[Show more]

CollectionsANU Research Publications
Date published: 2006
Type: Journal article
Source: Biochimica et Biophysica Acta: Bioenergetics
DOI: 10.1016/j.bbabio.2006.05.035


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