Results 31 to 40 of about 96,443 (174)

Proton-mediated photoprotection mechanism in photosystem II

open access: yesFrontiers in Plant Science, 2022
Photo-induced charge separation, which is terminated by electron transfer from the primary quinone QA to the secondary quinone QB, provides the driving force for O2 evolution in photosystem II (PSII).
Yu Sugo   +2 more
doaj   +1 more source

Protonation Equilibrium in the Active Site of the Photoactive Yellow Protein

open access: yesMolecules, 2021
The role and existence of low-barrier hydrogen bonds (LBHBs) in enzymatic and protein activity has been largely debated. An interesting case is that of the photoactive yellow protein (PYP).
Pablo Campomanes, Stefano Vanni
doaj   +1 more source

Molecular probe dynamics reveals suppression of ice-like regions in strongly confined supercooled water. [PDF]

open access: yesPLoS ONE, 2012
The structure of the hydrogen bond network is a key element for understanding water's thermodynamic and kinetic anomalies. While ambient water is strongly believed to be a uniform, continuous hydrogen-bonded liquid, there is growing consensus that ...
Debamalya Banerjee   +3 more
doaj   +1 more source

DOING THE LIMBO WITH A LOW BARRIER: HYDROGEN BONDING AND PROTON TRANSFER IN HYDROXYFORMYLFULVENE [PDF]

open access: bronzeProceedings of the 71st International Symposium on Molecular Spectroscopy, 2016
Zachary Vealey   +2 more
openalex   +3 more sources

Structural Relevance of Intramolecular H-Bonding in Ortho-Hydroxyaryl Schiff Bases: The Case of 3-(5-bromo-2-hydroxybenzylideneamino) Phenol

open access: yesMolecules, 2021
A new Schiff base compound, 3-(5-bromo-2-hydroxybenzylideneamino)phenol (abbreviated as BHAP) was synthesized and characterized by 1H- and 13C- nuclear magnetic resonance and infrared spectroscopies.
İsa Sıdır   +4 more
doaj   +1 more source

Low-barrier hydrogen bonds in enzyme cooperativity

open access: yesNature, 2019
The underlying molecular mechanisms of cooperativity and allosteric regulation are well understood for many proteins, with haemoglobin and aspartate transcarbamoylase serving as prototypical examples1,2. The binding of effectors typically causes a structural transition of the protein that is propagated through signalling pathways to remote sites and ...
Fabian Rabe von Pappenheim   +13 more
openaire   +5 more sources

On the electronic nature of low-barrier hydrogen bonds in enzymatic reactions [PDF]

open access: yesProceedings of the National Academy of Sciences, 1998
The electronic nature of low-barrier hydrogen bonds (LBHBs) in enzymatic reactions is discussed based on combined low temperature neutron and x-ray diffraction experiments and on high levelab initiocalculations by using the model substrate benzoylacetone.
Schiøtt, Birgit   +4 more
openaire   +3 more sources

Efficient urea electrosynthesis from carbon dioxide and nitrate via alternating Cu–W bimetallic C–N coupling sites

open access: yesNature Communications, 2023
Electrocatalytic urea synthesis is an emerging alternative technology to the traditional energy-intensive industrial urea synthesis protocol. Novel strategies are urgently needed to promote the electrocatalytic C–N coupling process and inhibit the side ...
Yilong Zhao   +9 more
doaj   +1 more source

An Ab Initio RRKM-Based Master Equation Study for Kinetics of OH-Initiated Oxidation of 2-Methyltetrahydrofuran and Its Implications in Kinetic Modeling

open access: yesEnergies, 2023
Cyclic ethers (CEs) can be promising future biofuel candidates. Most CEs possess physico-chemical and combustion indicators comparable to conventional fuels, making them suitable for internal combustion engines. This work computationally investigates the
Tam V.-T. Mai   +7 more
doaj   +1 more source

Crystal structure of a new phenyl(morpholino)methanethione derivative: 4-[(morpholin-4-yl)carbothioyl]benzoic acid

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2020
4-[(Morpholin-4-yl)carbothioyl]benzoic acid, C12H13NO3S, a novel phenyl(morpholino)methanethione derivative, crystallizes in the monoclinic space group P21/n.
Finagnon Hyacinthe Agnimonhan   +6 more
doaj   +1 more source

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