Abstract
This report describes our observations of the participation of manganese in electron transport and oxidation equivalent storage by the photosynthetic oxygen evolution complex of higher plants. The oxidizing potential produced by photosynthetic charge separation is stored near the site of water oxidation in a membrane-bound complex that contains manganese. Broken, washed chloroplast preparations typically contain 4–6 Mn per PSII reaction center, and approximately 2/3 of this quantity is released by mild treatments that specifically inactivate O2 evolution [1– 3]. Recent studies with inside out thylakoids [4] and photosystem II (PSII) preparations [5] have given rise to a reevaluation of the Mn content per photosynthetic unit, but it remains clear that a direct relation exists between Mn and O2 evolution.
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Goodin, D.B. et al. (1984). Light-Induced Changes in X-Ray Absorption (K-Edge) Energies of Manganese in Photosynthetic Membranes. In: Hodgson, K.O., Hedman, B., Penner-Hahn, J.E. (eds) EXAFS and Near Edge Structure III. Springer Proceedings in Physics, vol 2. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-46522-2_34
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DOI: https://doi.org/10.1007/978-3-642-46522-2_34
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