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ESEEM studies of substrate water and small alcohol binding to the oxygen-evolving complex of photosystem II during functional turnover

Ahrling, Karin; Evans, Michael C W; Nugent, J H A; Ball, R J; Pace, Ronald


We report the first examination of exchangeable proton and MeOH interactions with the Mn catalytic cluster in photosystem II, under functional flash turnover conditions, using 2H ESEEM spectroscopy on the S 2 and S0 multiline states. Deuterium-labeled water (D 2O) and methyl d3-labeled methanol (DMeOH) are employed. It was discovered that a hyperfine resolved multiline S0 signal could be seen in the presence of D2O, the hyperfine structure of which depended on the presence or absence of...[Show more]

CollectionsANU Research Publications
Date published: 2006
Type: Journal article
Source: Biochemistry
DOI: 10.1021/bi052146m


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