https://www.selleckchem.com/pr....oducts/ly2157299.htm
Photosynthetic water oxidation is performed through a light-driven cycle of five intermediates (S0-S4 states) in photosystem II (PSII). The S2 → S3 transition, which involves concerted water and proton transfer, is a key process for understanding the water oxidation mechanism. Here, to identify the water and proton transfer pathways during the S2 → S3 transition, we examined the effects of D1-N298A mutation and NO3- substitution for Cl-, which perturbed the O1 and Cl channels, respectively, on the S2 → S3 kinetics using time-resolved
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