The basic properties of the electronic structure of the oxygen-evolving complex of photosystem II are not perturbed by Ca 2+ removal
Ca2+ is an integral component of the Mn4O5Ca cluster of the oxygen-evolving complex in photosystem II (PS II). Its removal leads to the loss of the water oxidizing functionality. The S2′ state of the Ca2+-depleted cluster from spinach is examined by X- and Q-band EPR and 55Mn electron nuclear double resonance (ENDOR) spectroscopy. Spectral simulations demonstrate that upon Ca2+ removal, its electronic structure remains essentially unaltered, i.e. that of a manganese tetramer. No redistribution...[Show more]
|Collections||ANU Research Publications|
|Source:||Journal of Biological Chemistry|
|Access Rights:||Open Access|
|01_Lohmiller_The_basic_properties_of_the_2012.pdf||2.64 MB||Adobe PDF|
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