FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2087156969> ?p ?o ?g. }

• W2087156969 endingPage "1726" @default.
• W2087156969 startingPage "1711" @default.
• W2087156969 abstract "Light-driven oxidation of water to dioxygen in plants, algae, and cyanobacteria is catalyzed within photosystem II (PS II) by a Mn4Ca cluster. Although the cluster has been studied by many different methods, its structure and mechanism have remained elusive. X-ray absorption and emission spectroscopy and extended X-ray absorption fine structure studies have been particularly useful in probing the electronic and geometric structures and the mechanism of the water oxidation reaction. Recent progress, reviewed here, includes polarized X-ray absorption spectroscopy measurements of PS II single crystals. Analysis of those results has constrained the Mn4Ca cluster geometry to a set of three similar high-resolution structures. The structure of the cluster from the present study is unlike either the 3.0- or 3.5-Å-resolution X-ray structures or other previously proposed models. The differences between the models derived from X-ray spectroscopy and crystallography are predominantly because of damage to the Mn4Ca cluster by X-rays under conditions used for the structure determination by X-ray crystallography. X-ray spectroscopy studies are also used for studying the changes in the structure of the Mn4Ca catalytic center as it cycles through the five intermediate states known as the Si states (i = 0–4). The electronic structure of the Mn4Ca cluster has been studied more recently using resonant inelastic X-ray scattering spectroscopy (RIXS), in addition to the earlier X-ray absorption and emission spectroscopy methods. These studies are revealing that the assignment of formal oxidation states is overly simplistic. A more accurate description should consider the charge density on the Mn atoms, which includes the covalency of the bonds and delocalization of the charge over the cluster. The geometric and electronic structures of the Mn4Ca cluster in the S states derived from X-ray spectroscopy are leading to a detailed understanding of the mechanism of O−O bond formation during the photosynthetic water-splitting process." @default.
• W2087156969 created "2016-06-24" @default.
• W2087156969 creator A5043369784 @default.
• W2087156969 creator A5087040660 @default.
• W2087156969 date "2008-03-01" @default.
• W2087156969 modified "2023-10-16" @default.
• W2087156969 title "Where Water Is Oxidized to Dioxygen: Structure of the Photosynthetic Mn₄Ca Cluster from X-ray Spectroscopy" @default.
• W2087156969 cites W1496656505 @default.
• W2087156969 cites W1548878303 @default.
• W2087156969 cites W1550289515 @default.
• W2087156969 cites W186283265 @default.
• W2087156969 cites W1961714136 @default.
• W2087156969 cites W1963482869 @default.
• W2087156969 cites W1964274154 @default.
• W2087156969 cites W1964677162 @default.
• W2087156969 cites W1967250117 @default.
• W2087156969 cites W1967695001 @default.
• W2087156969 cites W1968571307 @default.
• W2087156969 cites W1973721002 @default.
• W2087156969 cites W1975358051 @default.
• W2087156969 cites W1977113582 @default.
• W2087156969 cites W1982012829 @default.
• W2087156969 cites W1982996670 @default.
• W2087156969 cites W1983821593 @default.
• W2087156969 cites W1983862582 @default.
• W2087156969 cites W1986829915 @default.
• W2087156969 cites W1987946602 @default.
• W2087156969 cites W1990326465 @default.
• W2087156969 cites W1995414833 @default.
• W2087156969 cites W1996917852 @default.
• W2087156969 cites W2000037965 @default.
• W2087156969 cites W2000628866 @default.
• W2087156969 cites W2001888492 @default.
• W2087156969 cites W2002220374 @default.
• W2087156969 cites W2002432567 @default.
• W2087156969 cites W2002486954 @default.
• W2087156969 cites W2002733899 @default.
• W2087156969 cites W2008763023 @default.
• W2087156969 cites W2009107609 @default.
• W2087156969 cites W2009626366 @default.
• W2087156969 cites W2010896039 @default.
• W2087156969 cites W2011821458 @default.
• W2087156969 cites W2012266661 @default.
• W2087156969 cites W2013645453 @default.
• W2087156969 cites W2014583636 @default.
• W2087156969 cites W2016629142 @default.
• W2087156969 cites W2018056205 @default.
• W2087156969 cites W2018275194 @default.
• W2087156969 cites W2020588606 @default.
• W2087156969 cites W2025759616 @default.
• W2087156969 cites W2026673235 @default.
• W2087156969 cites W2031098616 @default.
• W2087156969 cites W2031732404 @default.
• W2087156969 cites W2033285121 @default.
• W2087156969 cites W2033619848 @default.
• W2087156969 cites W2034665064 @default.
• W2087156969 cites W2035044112 @default.
• W2087156969 cites W2039550849 @default.
• W2087156969 cites W2039827814 @default.
• W2087156969 cites W2042958201 @default.
• W2087156969 cites W2045682255 @default.
• W2087156969 cites W2048675843 @default.
• W2087156969 cites W2049332437 @default.
• W2087156969 cites W2049421853 @default.
• W2087156969 cites W2054148716 @default.
• W2087156969 cites W2055639727 @default.
• W2087156969 cites W2055800630 @default.
• W2087156969 cites W2056345986 @default.
• W2087156969 cites W2057863409 @default.
• W2087156969 cites W2060017381 @default.
• W2087156969 cites W2060238623 @default.
• W2087156969 cites W2060372388 @default.
• W2087156969 cites W2061911460 @default.
• W2087156969 cites W2062443855 @default.
• W2087156969 cites W2062808472 @default.
• W2087156969 cites W2065164261 @default.
• W2087156969 cites W2066071386 @default.
• W2087156969 cites W2066846300 @default.
• W2087156969 cites W2070700889 @default.
• W2087156969 cites W2072390533 @default.
• W2087156969 cites W2073120924 @default.
• W2087156969 cites W2074444876 @default.
• W2087156969 cites W2074562133 @default.
• W2087156969 cites W2078605416 @default.
• W2087156969 cites W2080962330 @default.
• W2087156969 cites W2081358286 @default.
• W2087156969 cites W2083907491 @default.
• W2087156969 cites W2088010647 @default.
• W2087156969 cites W2098472363 @default.
• W2087156969 cites W2099280955 @default.
• W2087156969 cites W2105125469 @default.
• W2087156969 cites W2109123465 @default.
• W2087156969 cites W2124396504 @default.
• W2087156969 cites W2126311523 @default.
• W2087156969 cites W2129674841 @default.
• W2087156969 cites W2153561943 @default.
• W2087156969 cites W2156693722 @default.
• W2087156969 cites W2162748651 @default.

• next