Results 101 to 110 of about 21,611 (258)

A fluorophore attached to nicotinic acetylcholine receptor beta M2 detects productive binding of agonist to the alpha delta site [PDF]

, 2004
To study conformational transitions at the muscle nicotinic acetylcholine (ACh) receptor (nAChR), a rhodamine fluorophore was tethered to a Cys side chain introduced at the beta-19' position in the M2 region of the nAChR expressed in Xenopus oocytes ...
Auyeung, Vincent C., Bezanilla, Francisco, Chanda, Baron, Dahan, David S., Dibas, Mohammed I., Dougherty, Dennis A., Lester, Henry A., Petersson, E. James   +7 more
core  

A Diabatic Three-State Representation of Photoisomerization in the Green Fluorescent Protein Chromophore

, 2009
We give a quantum chemical description of bridge photoisomerization reaction of green fluorescent protein (GFP) chromophores using a representation over three diabatic states.
Angeli, Burghardt, Cederbaum, Cederbaum, Linares, McWeeny, Peterman, Quenneville, Ross H. McKenzie, Seth Olsen, Wu, Yang, Zilberg, Zilberg   +13 more
core   +1 more source

Single GAF Domain Phytochrome Exhibits a pH‐Dependent Shunt on the Millisecond Timescale

ChemPhysChem, Volume 26, Issue 6, March 15, 2025.
During their light‐induced photocycle, phytochromes can engage in a thermal reversion back to the initially excited state, denoted as a shunt. This study investigates a pH‐dependent shunt transition in the Pfr state of the All2699g1 phytochrome from Nostoc punctiforme using UV/Vis laser flash photolysis and kinetic modeling. The findings suggest a keto‐
Florian Trunk, Lisa Köhler, Tobias Fischer, Wolfgang Gärtner, Chen Song, Chavdar Slavov, Josef Wachtveitl   +6 more
wiley   +1 more source

INFLUÊNCIA DA RIGIDEZ DO MEIO NA CINÉTICA DO FOTOCROMISMO DE DITIZONATOS METÁLICOS

Química Nova
The kinetics of photoisomerization and thermal back reaction of mercury(II) and zinc(II) dithizonates, M(HDz)2, were analyzed by photolysis assays in fluid solution and in poly(methyl methacrylate), PMMA, films.
Cristiane Lázara de Barros, Newton Martins Barbosa Neto, Antonio Otavio T. Patrocinio   +2 more
doaj   +1 more source

Rates and Equilibria for a Photoisomerizable Antagonist at the Acetylcholine Receptor of Electrophorus Electroplaques [PDF]

, 1985
Voltage-jump and light-flash experiments have been performed on isolated Electrophorus electroplaques exposed simultaneously to nicotinic agonists and to the photoisomerizable compound 2,2'-bis-[α-(trimethylammonium)methyl]-azobenzene (2BQ).
Erlanger, Bernard F., Krouse, Mauri E., Lester, Henry A., Wassermann, Norbert H.   +3 more
core   +1 more source

Implantable drug delivery system: Frontiers of medicine‐engineering interdisciplinary

Interdisciplinary Medicine, EarlyView.
This review systematically summarizes the driving mechanisms of implantable on‐demand drug delivery systems (IDDS), including endogenous, exogenous, and closed‐loop strategies. It highlights the pivotal roles of flexible electronics and miniaturization in enhancing the tissue conformity and spatial adaptability.
Yu Zeng, Rongtai Su, Manyu Zhao, Xin Song, Ran Liu, Yuhao Zhou, Chaojuan Yang, Yanli Jiao, Xiao‐Wei Xiang, Lingqian Chang   +9 more
wiley   +1 more source

History-dependent nano-photoisomerization by optical near-field in photochromic single crystals

Communications Materials
The history dependence of physical systems is promising for solving complex problems. To exploit spontaneous nanometre-scale optical memory for computation, the history dependence must be elucidated. Here, we demonstrate history-dependent or dynamic nano-
Yuji Arakawa, Kazuharu Uchiyama, Kingo Uchida, Makoto Naruse, Hirokazu Hori   +4 more
doaj   +1 more source

Anethole Isomerization and Dimerization Induced by Acid Sites or UV Irradiation

Molecules, 2010
The formation of cis-anethole and various dimers as a result of the exposure of trans-anethole to microporous solid acids (dealuminated HY zeolites), or UV-Vis irradiation was established by means of high resolution gas chromatography coupled to mass ...
Elena Stashenko, Jairo René Martínez, Hans T. Castro   +2 more
doaj   +1 more source

Molecular Response in One-Photon Absorption via Natural Thermal Light vs Pulsed Laser Excitation

, 2012
Photoinduced biological processes occur via one photon absorption in natural light, which is weak, CW and incoherent, but are often studied in the laboratory using pulsed coherent light.
Cheng, Christopher, Collini, Engel, Gilmore, Ishizaki, Kocsis, Kommandeur, M. Shapiro, Martinez, Novoderezhkin, P. Brumer, Polli, Prokhorenko, Schoenlein, Scholes, Scully, Shapiro, Strumpfer, Suzuki, Turner, Wang   +21 more
core   +1 more source

Diverse reactivity of maleimides in polymer science and beyond

Polymer International, Volume 74, Issue 4, Page 296-306, April 2025.
This mini‐review provides a thorough overview of maleimide chemistry, highlighting its diverse reactivity in polymer and materials science applications. Abstract Maleimides are remarkably versatile functional groups, capable of participating in homo‐ and copolymerizations, Diels–Alder and (photo)cycloadditions, Michael additions, and other reactions ...
Bruce E Kirkpatrick, Kristi S Anseth, Tayler S Hebner   +2 more
wiley   +1 more source