Results 71 to 80 of about 47,143 (306)

The role of lipids in photosystem II

Biochimica et Biophysica Acta (BBA) - Bioenergetics, 2012
The thylakoid membranes of photosynthetic organisms, which are the sites of oxygenic photosynthesis, are composed of monogalactosyldiacylglycerol (MGDG), digalactosyldiacylglycerol (DGDG), sulfoquinovosyldiacylglycerol (SQDG), and phosphatidylglycerol (PG).
Mizusawa, Naoki, Wada, Hajime
openaire   +2 more sources

Sonochemical Synthesis of Cobalt‐Oxo‐Cubanes as Redox‐Active Platform for Proton‐Coupled Electron Transfer

Chemistry – A European Journal, EarlyView.
A facile sonochemical method for rapid and gram‐scale synthesis of ligand‐tunable cobalt‐oxo‐cubanes is reported. Electrochemical studies reveal a Co4O4‐centered one‐electron oxidation and PCET pathway, while identifying Co2+ impurities as key disruptors of true cubane redox chemistry.
Satyapriya Nath, Amjath Nihal Thiruthimmal, Tapan Ping, Sankalpa N. Panda, Loknath Patro, Jeebanjyoti Mohapatra, B. L. Bhargava, Bikash Kumar Jena, Bishnu P. Biswal   +8 more
wiley   +1 more source

Arabidopsis STN7 Kinase Provides a Link between Short- and Long-Term Photosynthetic Acclimation [PDF]

, 2009
Flowering plants control energy allocation to their photosystems in response to light quality changes. This includes the phosphorylation and migration of light-harvesting complex II (LHCII) proteins (state transitions or short-term response) as well as ...
Leister, Dario, A. Ihnatowicz, M. Scharfenberg, R. Wagner, Ihnatowicz, Anna, A. Schneider, Pesaresi, Paolo, Pfannschmidt, Thomas, Bonardi, Vera, T. Kleine, D. Leister, Strissel, Henning, Schneider, Anja, V. Bonardi, M. Pribil, Wagner, Raik, A. Hertle, Kleine, Tatjana, H. Strissel, P. Pesaresi, Scharfenberg, Michael, T. Pfannschmidt, Pribil, Mathias, Hertle, Alexander   +23 more
core   +1 more source

Dimeric and high-resolution structures of Chlamydomonas Photosystem I from a temperature-sensitive Photosystem II mutant

Communications Biology, 2021
Caspy et al. report the structure of PSI from a temperature-sensitive photoautotrophic PSII mutant of Chlamydomonas reinhardtii (TSP4), and report the distribution of conserved water molecules in the structure from cyanobacterial to higher plant PSI ...
Ido Caspy, Tom Schwartz, Vinzenz Bayro-Kaiser, Mariia Fadeeva, Amit Kessel, Nir Ben-Tal, Nathan Nelson   +6 more
doaj   +1 more source

Tyrosyl radicals in Photosystem II

Biochimica et Biophysica Acta (BBA) - Bioenergetics, 2004
In PSII, there are two redox-active tyrosines, D and Z, with different midpoint potentials and different reduction kinetics. The factors responsible for these functional differences have not yet been elucidated. Recent model compound studies of tyrosinate and of tyrosine-containing dipeptides have demonstrated that perturbations of the amino and amide ...
Pujols-Ayala, Idelisa, Barry, Bridgette A.   +1 more
openaire   +2 more sources

Light harvesting in photosystem II [PDF]

Photosynthesis Research, 2013
This review focuses on the light-harvesting properties of photosystem I (PSI) and its LHCI outer antenna. LHCI consists of different chlorophyll a/b binding proteins called Lhca's, surrounding the core of PSI. In total, the PSI-LHCI complex of higher plants contains 173 chlorophyll molecules, most of which are there to harvest sunlight energy and to ...
Croce, R., van Amerongen, H.
openaire   +5 more sources

Ligand‐Level Chemical Activation: Coordination with Benefits

European Journal of Inorganic Chemistry, EarlyView.
While often perceived as a liability, ligand‐based reactivity in carefully designed settings becomes a powerful synthetic tool. The key to streamlined processes overriding classical ionic reactivity is the selective electron redistribution induced by metal coordination. This enables storage of electrons and protons or incorporation of functional groups
Oscar Charpentier, Agnideep Das, Marine Desage‐El Murr   +2 more
wiley   +1 more source

Activation of Aryl Halides by Triplet–Triplet Annihilation Upconversion Enabling Coupling Processes Under an Open‐to‐Air Environment

European Journal of Organic Chemistry, EarlyView.
Triplet–triplet annihilation upconversion (TTA‐UC) performed inside supramolecular viscoelastic gels enables efficient CC and C–heteroatom coupling reactions under green LED irradiation in open‐air conditions. The gel network restricts oxygen diffusion, preserves triplet states, and allows aryl halide activation through upconverted excited states ...
Daniel Álvarez‐Gutiérrez, Paola Domínguez Domínguez, M. Consuelo Jiménez, David Díaz Díaz, Raúl Pérez‐Ruiz   +4 more
wiley   +1 more source

Redox Tuning in Photosystem II

Trends in Plant Science, 2017
In photosynthesis, oxygen is liberated from water, not from CO2; however, this model has been silent on why photosynthesis requires bicarbonate. Rutherford and colleagues solve this problem elegantly: bicarbonate tunes water-oxidising photosystem II to make onward electron transfer efficient; an absence of bicarbonate retunes, redirects, and safely ...
Allen, JF, Nield, J
openaire   +5 more sources

Cytotoxicity of 19 Pesticides in Rainbow Trout Gill, Liver, and Intestinal Cell Lines

Environmental Toxicology and Chemistry, EarlyView.
Abstract The rainbow trout gill cell line (RTgill‐W1), via test guideline 249 of the Organisation for Economic Co‐operation and Development, has been established as a promising New Approach Methodology, although to advance confidence in the method more case studies are needed that: 1) expand our understanding of applicability domains (chemicals with ...
Sophie Emberley‐Korkmaz, Krittika Mittal, Na'im Temlock, Jessica Head, Niladri Basu   +4 more
wiley   +1 more source