Results 51 to 60 of about 2,630,925 (302)

Synthesis and Proton transport property of Poly(aspartic acid) thin film on SiO_2 substrate [PDF]

, 2009
Poly(aspartic acid) and its thin film were synthesized to study proton transport properties. The average degree of polymerization and molecular weight are 50 and 7000, respectively.
Iguchi, Fumitada, Yugami, Hiroo, Nagao, Yuki, Sata, Noriko   +3 more
core   +1 more source

Membrane Lipid Composition Influences the Hydration of Proton Half-Channels in F_oF₁-ATP Synthase

Life, 2023
The membrane lipid composition plays an important role in the regulation of membrane protein activity. To probe its influence on proton half-channels’ structure in FoF1-ATP synthase, we performed molecular dynamics simulations with the bacterial protein ...
Leonid A. Ivontsin, Elena V. Mashkovtseva, Yaroslav R. Nartsissov   +2 more
doaj   +1 more source

Reconstructing enzyme evolution by protein engineering

FEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler, Markus R. Busch, Reinhard Sterner   +2 more
wiley   +1 more source

High resolution measurements and modeling of auroral hydrogen emission line profiles [PDF]

, 2003
Measurements in the visible wavelength range at high spectral resolution (1.3 A° ) have been made at Longyearbyen, Svalbard (15.8 E,78.2 N) during an interval of intense proton precipitation.
Frey, H.U., H. U. Frey, D. Lummerzheim, Galand, M., Lummerzheim, D., S. C. Robertson, Robertson, SC, Frey, HU, Peticolas, L.M., Lummerzheim, D, Furniss, I, Baumgardner, J, M. Mendillo, Lanchester, B.S., J. Baumgardner, Baumgardner, J., Rees, M.H., I. Furniss, Lanchester, BS, Robertson, S. C., Furniss, I., M. Galand, Peticolas, L. M., Mendillo, M., Galand, M, B. S. Lanchester, Rees, MH, M. H. Rees, Peticolas, LM, Rees, M. H., L. M. Peticolas, Robertson, S.C., Lanchester, B. S., Mendillo, M, Frey, H. U.   +34 more
core   +2 more sources

Electrostatic Potentials Caused by the Release of Protons from Photoactivated Compound Sodium 2-Methoxy-5-nitrophenyl Sulfate at the Surface of Bilayer Lipid Membrane

Membranes, 2023
Lateral transport and release of protons at the water–membrane interface play crucial roles in cell bioenergetics. Therefore, versatile techniques need to be developed for investigating as well as clarifying the main features of these processes at the ...
Valerij S. Sokolov, Vsevolod Yu. Tashkin, Darya D. Zykova, Yulia V. Kharitonova, Timur R. Galimzyanov, Oleg V. Batishchev   +5 more
doaj   +1 more source

Emerging experimental and computational methods for studying redox‐regulated structural transitions

FEBS Letters, EarlyView.
Redox reactions can reshape proteins and alter how they behave in cells, with important consequences for health and disease. This review explores emerging experimental and computational approaches for discovering these redox‐sensitive protein switches, revealing their structural effects, and predicting their behavior, opening new opportunities to ...
Tasneem Rass, Dana Reichmann, Gábor Erdős   +2 more
wiley   +1 more source

Observation of O+ 4P-4D0 lines in proton aurora over Svalbard [PDF]

, 2004
Spectra of a proton aurora event show lines of O+ 4P-4D0 multiplet (4639–4696 Å) enhanced relative to the N2 +1N(0,2) compared to normal electron aurora. Conjugate satellite particle measurements are used as input to electron and proton transport models,
Ivchenko, N., Lanchester, B.S., Fordham, J., Galand, M., Rees, M.H., Lummerzheim, D., Furniss, I.   +6 more
core  

Transport outlook 2010: The potential for innovation [PDF]

, 2010
This paper provides evidence on and discussion of recent developments in global transport markets and analyzes what policies look most promising for stabilizing CO2-emissions from light-duty vehicles.
International Transport Forum, OECD
core   +1 more source

Proton Transport via the Membrane Surface [PDF]

Biophysical Journal, 2002
Some proton pumps, such as cytochrome c oxidase (C(c)O), translocate protons across biological membranes at a rate that considerably exceeds the rate of proton transport to the entrance of the proton-conducting channel via bulk diffusion. This effect is usually ascribed to a proton-collecting antenna surrounding the channel entrance.
Georgievskii, Yuri, Medvedev, Emile S., Stuchebrukhov, Alexei A.   +2 more
openaire   +2 more sources

Artificial molecular machines and motors—Design and control of nanoscale motion

FEBS Letters, EarlyView.
Molecules are constantly moving because of thermal fluctuations, but random motion alone cannot be exploited to perform directional tasks. Artificial molecular machines use chemical, electrical, or light energy to bias this motion. Molecular shuttles, rotary motors, and supramolecular pumps illustrate how nanoscale movement can be controlled and ...
Leonardo Andreoni, Alberto Credi
wiley   +1 more source