Photosystem II: Difference between revisions

Another important facet of Photosystem II is its ability to oxidize water to oxygen with its <scene name='Photosystem_II/Oxygen_evolving_centers/11'>oxygen evolving centers</scene>.  These centers are <scene name='Photosystem_II/Oxygen_evolving_centers/3'>cubane-like</scene> structures with 3 '''<FONT COLOR="#8D38C9">manganese</FONT>''', 4 '''<FONT COLOR="#C11B17">oxygen</FONT>''' and a '''<FONT COLOR="#59E817">calcium</FONT>''' linked to a fourth manganese.<ref>Ferreira, K.N., Iverson, T.M., Maghlaoui, K., Barber, J., Iwata, S.  "Architecture of the photosynthetic oxygen-evolving center."  Science, March 19, 2004, 303 (5665), 1831-8.  PMID:[http://www.ncbi.nlm.nih.gov/pubmed/14764885 14764885]</ref>  Oxidation of water leaves 2 H ⁺ on the lumenal side of the membrane, helping to establish the proton gradient essential for ATP synthesis in the CF₁CF₀-ATP sythase protein.