Results 51 to 60 of about 657,635 (323)

Going around the Kok cycle of the water oxidation reaction with femtosecond X-ray crystallography

IUCrJ, 2023
The water oxidation reaction in photosystem II (PS II) produces most of the molecular oxygen in the atmosphere, which sustains life on Earth, and in this process releases four electrons and four protons that drive the downstream process of CO2 fixation ...
Asmit Bhowmick, Philipp S. Simon, Isabel Bogacz, Rana Hussein, Miao Zhang, Hiroki Makita, Mohamed Ibrahim, Ruchira Chatterjee, Margaret D. Doyle, Mun Hon Cheah, Petko Chernev, Franklin D. Fuller, Thomas Fransson, Roberto Alonso-Mori, Aaron S. Brewster, Nicolas K. Sauter, Uwe Bergmann, Holger Dobbek, Athina Zouni, Johannes Messinger, Jan Kern, Vittal K. Yachandra, Junko Yano   +22 more
doaj   +1 more source

Status of the COMET experiment [PDF]

EPJ Web of Conferences, 2023
The COMET (COherent Muon to Electron Transition) experiment, currently being built in Tokai, Japan, will search for the coherent neutrinoless transition of muons to electrons in the coulomb field of atomic nuclei.
Jansen Andreas
doaj   +1 more source

Rotenone selectively occludes sensitivity to hypoxia in rat carotid body glomus cells [PDF]

, 2003
Carotid body glomus cells release transmitters in response to hypoxia due to the increase of excitability resulting from inhibition of O2 -regulated K+ channels. However, the mechanisms involved in the detection of changes of O2 tension are unknown.
García Fernández, María, López Barneo, José, Ortega Sáenz, Patricia, Pardal Redondo, Ricardo   +3 more
core   +2 more sources

Upregulation of bundle sheath electron transport capacity under limiting light in C4 Setaria viridis

bioRxiv, 2021
C4 photosynthesis is a biochemical pathway that operates across mesophyll and bundle sheath (BS) cells to increase CO2 concentration at the site of CO2 fixation.
M. Ermakova, Chandra Bellasio, D. Fitzpatrick, R. Furbank, Fikret Mamedov, S. von Caemmerer   +5 more
semanticscholar   +1 more source

Structural Coupling of Extrinsic Proteins with the Oxygen-Evolving Center in Photosystem II

Frontiers in Plant Science, 2016
Photosystem II (PSII), which catalyzes photosynthetic water oxidation, is composed of more than 20 subunits, including membrane-intrinsic and -extrinsic proteins.
Kentaro eIfuku, Takumi eNoguchi
doaj   +1 more source

Multi-heme Cytochromes in Shewanella oneidensis MR-1:Structures, functions and opportunities [PDF]

, 2015
Multi-heme cytochromes are employed by a range of microorganisms to transport electrons over distances of up to tens of nanometers. Perhaps the most spectacular utilization of these proteins is in the reduction of extracellular solid substrates ...
Brown JP, Collins MJ, Coursolle D, Fonseca BM, Jochen Blumberger, Julea N. Butt, Kevin M. Rosso, Marian Breuer, Song Y, Teixeira M   +9 more
core   +1 more source

Insights into melatonin-induced photosynthetic electron transport under low-temperature stress in cucumber

Frontiers in Plant Science, 2022
In this study, the differences in chlorophyll fluorescence transient (OJIP) and modulated 820 nm reflection (MR820) of cucumber leaves were probed to demonstrate an insight into the precise influence of melatonin (MT) on cucumber photosystems under low ...
Pei Wu, Pei Wu, Yadong Ma, Yadong Ma, Golam Jalal Ahammed, Baoyu Hao, Baoyu Hao, Jingyi Chen, Jingyi Chen, Wenliang Wan, Wenliang Wan, Yanhui Zhao, Yanhui Zhao, Huimei Cui, Huimei Cui, Wei Xu, Wei Xu, Jinxia Cui, Jinxia Cui, Huiying Liu, Huiying Liu   +20 more
doaj   +1 more source

Role of multiple subband renormalization in the electronic transport of correlated oxide superlattices

, 2008
Metallic behavior of band-insulator/ Mott-insulator interfaces was observed in artificial perovskite superlattices such as in nanoscale SrTiO3/LaTiO3 multilayers.
A. Ohtomo, A. Rüegg, A. Rüegg, D.R. Hamann, G. Beni, G. Kotliar, H. Ohta, J. Chakhalian, J.K. Freericks, K. Shibuya, M. Takizawa, M.C. Gutzwiller, N. Nakagawa, P.M. Chaikin, R. Frésard, S. Mukerjee, S. Okamoto, S. Okamoto, S. Okamoto, S. Wehrli, S.S.A. Seo, T.M. Rice, W. Koshibae, W.F. Brinkman   +23 more
core   +1 more source

Multistationary and Oscillatory Modes of Free Radicals Generation by the Mitochondrial Respiratory Chain Revealed by a Bifurcation Analysis [PDF]

, 2012
The mitochondrial electron transport chain transforms energy satisfying cellular demand and generates reactive oxygen species (ROS) that act as metabolic signals or destructive factors.
Mark F. Schumaker, Mark Friedman, Marta Cascante, Massimo Trucco, Philip E. Bourne, Tatyana V. Votyakova, Vitaly A. Selivanov   +6 more
core   +5 more sources

Methyl Jasmonate Protects the PS II System by Maintaining the Stability of Chloroplast D1 Protein and Accelerating Enzymatic Antioxidants in Heat-Stressed Wheat Plants

Antioxidants, 2021
The application of 10 µM methyl jasmonate (MeJA) for the protection of wheat (Triticum aestivum L.) photosystem II (PS II) against heat stress (HS) was studied.
Mehar Fatma, Noushina Iqbal, Zebus Sehar, Mohammed Nasser Alyemeni, Prashant Kaushik, Nafees A. Khan, Parvaiz Ahmad   +6 more
doaj   +1 more source