1987 Sep 22 26(19):5974–5981.A party of adventurers in what appears to be a medieval fantasy world called Varn is looking for an entrance to the highly coveted Inner Sanctum. Comparison of the structure of the manganese complex in the S1 and S2 states of the photosynthetic O2-evolving complex: an x-ray absorption spectroscopy study. Yachandra VK, Guiles RD, McDermott AE, Cole JL, Britt RD, Dexheimer SL, Sauer K, Klein MP.Isolation of a photosystem II reaction center consisting of D-1 and D-2 polypeptides and cytochrome b-559. Phosphorylation of Photosystem II Components, CP43 Apoprotein, D1, D2, and 10 to 11 Kilodalton Protein in Chloroplast Thylakoids of Higher Plants. Ikeuchi M, Plumley FG, Inoue Y, Schmidt GW.The relations between the chloride, calcium, and polypeptide requirements of photosynthetic water oxidation.
Kinetics of O2 evolution from H2O2 catalyzed by the oxygen-evolving complex: investigation of the S1-dependent reaction. Site-directed mutagenesis identifies a tyrosine radical involved in the photosynthetic oxygen-evolving system. Debus RJ, Barry BA, Babcock GT, McIntosh L.Links to PubMed are also available for Selected References. Get a printable copy (PDF file) of the complete article (1.0M), or click on a page image below to browse page by page. Full textįull text is available as a scanned copy of the original print version. Differences between the organization of the water oxidizing complexes in green plants and cyanobacteria suggest, furthermore, that in vivo their water oxidizing mechanisms must operate under different, still unrecognized constraints. Much is still to be learned also about the function of the individual polypeptides and about the role of the cofactors Ca 2+ and Cl −. Among them are those concerned with the organization and binding of the functional Mn, its specific role in the oxidant storage that precedes the formation of one oxygen from two water molecules, and its cooperation with other redox-active constituents. Spectacular advances have been made in recent years, but many questions remain to be answered. This article summarizes the present state of knowledge about the organization of the water oxidizing polypeptide complex of photosynthesis and the mechanism of its operation.
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