Zobrazeno 1 - 10
of 29
pro vyhledávání: '"Georgia Zahariou"'
Publikováno v:
Magnetochemistry, Vol 7, Iss 9, p 131 (2021)
The biological water oxidation takes place in Photosystem II (PSII), a multi-subunit protein located in thylakoid membranes of higher plant chloroplasts and cyanobacteria. The catalytic site of PSII is a Mn4Ca cluster and is known as the oxygen evolv
Externí odkaz:
https://doaj.org/article/5f01842b686042eca0730079ac89438a
Autor:
Giorgos Athanasellis, Georgia Zahariou, Stefanos Kikionis, Olga Igglessi-Markopoulou, John Markopoulos
Publikováno v:
Bioinorganic Chemistry and Applications, Vol 2008 (2008)
Tetronic acids, 4-hydroxy-5H-furan-2-ones, constitute a class of heterocyclic compounds with potent biological and pharmacological activity. The β,β′-tricarbonyl moiety plays an integral role in biological systems and forms a variety of metal com
Externí odkaz:
https://doaj.org/article/3ef513504ad3468294ccbe1de672bb22
Publikováno v:
Angewandte Chemie (International Ed. in English)
The tetramanganese–calcium cluster of the oxygen‐evolving complex of photosystem II adopts electronically and magnetically distinct but interconvertible valence isomeric forms in its first light‐driven oxidized catalytic state, S2. This bistabi
Autor:
Eleftherios Halevas, Barbara Mavroidi, Georgia Zahariou, Maria Pelecanou, Antonios G. Hatzidimitriou
Publikováno v:
Inorganica Chimica Acta. 546:121325
Autor:
Juliana Cecília de Mendonça Silva, Dimitrios A. Pantazis, Nikolaos Ioannidis, Georgia Zahariou, Maria Chrysina
Publikováno v:
The Journal of Physical Chemistry B. 123:3068-3078
In biological water oxidation, a redox-active tyrosine residue (D1-Tyr161 or YZ) mediates electron transfer between the Mn4CaO5 cluster of the oxygen-evolving complex and the charge-separation site of photosystem II (PSII), driving the cluster throug
Publikováno v:
Angewandte Chemie (International Ed. in English)
Among the intermediate catalytic steps of the water‐oxidizing Mn4CaO5 cluster of photosystem II (PSII), the final metastable S3 state is critically important because it binds one substrate and precedes O2 evolution. Herein, we combine X‐ and Q‐
Autor:
Anastasia A. Pantazaki, Georgia Zahariou, Barbara Mavroidi, Anna Pekou, George Litsardakis, E. Halevas, Rigini Papi, Antonios G. Hatzidimitriou, Maria Pelecanou, Marina Sagnou
Publikováno v:
Journal of inorganic biochemistry. 208
Curcumin and quercetin are two of the most prominent natural polyphenols with a diverse spectrum of beneficial properties, including antioxidant, anti-inflammatory, chemopreventive and chemotherapeutic activity. The complexation of these natural prod
Autor:
Panagiota Danelli, Michael Pissas, Spyros P. Perlepes, Constantinos C. Stoumpos, Georgia Zahariou, Yiannis Sanakis, Catherine P. Raptopoulou, Vassilis Psycharis
Publikováno v:
Polyhedron. 207:115350
The syntheses, crystal and electronic structures are reported of three new mononuclear Mn(III) complexes with the formulae [Mn{(py)2C(OMe)(O)}2(MeOH)2](PF6) (1), [Mn{(py)2C(OMe)(O)}2](PF6) (2) and [Mn{(py)2C(OMe)(O)}2](ClO4) (3), where (py)2C(OMe)(O)
Publikováno v:
Polyhedron. 206:115335
The Photosystem II (PSII) water oxidation to molecular oxygen process is catalyzed by an oxygen-bridged Mn4CaO5 cluster, known as Oxygen Evolving Complex (OEC) of PSII. The Mn4CaO5 cluster undergoes periodically four one-electron oxidation steps, S0
Autor:
Georgia Zahariou
Publikováno v:
Inorganic Chemistry. 56:6105-6113
An artificial oxygen-evolving complex (OEC) contains a tetranuclear CoIII4O4 cubic cluster ligated with acetate and pyridine molecules, a light-activated Ru(bpy)32+ moiety (bpy = 2,2′-bipyridine), and the sacrificial electron acceptor S2O82– side