Results 71 to 80 of about 207,495 (287)

Introduction to quantum mechanics for applications in quantum biology: the case of the avian compass

Frontiers in Photonics
Quantum biology explores the possibility that fundamental quantum phenomena—such as coherence, tunneling, and entanglement—play functional roles in living systems. While biological environments are warm, wet, and noisy, making them seemingly inhospitable
Fernando Parisio, Daniel Felinto, Matheus Cândia Araña, Matheus Cândia Araña, Pedro H. Alvarez, Pedro H. Alvarez, Marcelo Victor Pires de Sousa, Marcelo Victor Pires de Sousa   +7 more
doaj   +1 more source

Electron spin relaxation can enhance the performance of a cryptochrome-based magnetic compass sensor

New Journal of Physics, 2016
The radical pair model of the avian magnetoreceptor relies on long-lived electron spin coherence. Dephasing, resulting from interactions of the spins with their fluctuating environment, is generally assumed to degrade the sensitivity of this compass to ...
Daniel R Kattnig, Jakub K Sowa, Ilia A Solov'yov, P J Hore   +3 more
doaj   +1 more source

Weak broadband electromagnetic fields are more disruptive to magnetic compass orientation in a night-migratory songbird (Erithacus rubecula) than strong narrow-band fields

Frontiers in Behavioral Neuroscience, 2016
Magnetic compass orientation in night-migratory songbirds is embedded in the visual system and seems to be based on a light-dependent radical pair mechanism. Recent findings suggest that both broadband electromagnetic fields ranging from ~2 kHz to ~9 MHz
Susanne eSchwarze, Susanne eSchwarze, Nils-Lasse eSchneider, Nils-Lasse eSchneider, Thomas eReichl, Thomas eReichl, David eDreyer, David eDreyer, Nele eLefeldt, Nele eLefeldt, Svenja eEngels, Svenja eEngels, Neville eBaker, P J Hore, Henrik eMouritsen, Henrik eMouritsen   +15 more
doaj   +1 more source

Glutathione--hydroxyl radical interaction: a theoretical study on radical recognition process. [PDF]

PLoS ONE, 2013
Non-reactive, comparative (2 × 1.2 μs) molecular dynamics simulations were carried out to characterize the interactions between glutathione (GSH, host molecule) and hydroxyl radical (OH(•), guest molecule).
Béla Fiser, Balázs Jójárt, Imre G Csizmadia, Béla Viskolcz   +3 more
doaj   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

FEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source

The Magnetic Compass of Birds: The Role of Cryptochrome

Frontiers in Physiology, 2021
The geomagnetic field provides directional information for birds. The avian magnetic compass is an inclination compass that uses not the polarity of the magnetic field but the axial course of the field lines and their inclination in space.
Roswitha Wiltschko, Christine Nießner, Wolfgang Wiltschko   +2 more
doaj   +1 more source

Poly-p-hydroquinone Ethers: Isoenergetic Molecular Wires with Length-Invariant Oxidation Potentials and Cation Radical Excitation Energies [PDF]

, 2017
Typical poly-p-phenylene wires are characterized by strong interchromophoric electronic coupling with redox and optical properties being highly length-dependent.
Chebny, Vincent J., Ivanov, Maxim Vadimovich, Rathore, Rajendra, Talipov, Marat R.   +3 more
core   +5 more sources

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

FEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho, Shin Morioka, Junko Sasaki, Takehiko Sasaki   +3 more
wiley   +1 more source

Potential Impact of Geomagnetic Field in Transcranial Magnetic Stimulation for the Treatment of Neurodegenerative Diseases

Frontiers in Human Neuroscience, 2017
Throughout the long history of various therapeutic trials of transcranial magnetic stimulation (TMS), some TMS protocols have been reported to be clearly effective in the treatment of neurodegenerative diseases.
Kwon-Seok Chae, Kwon-Seok Chae, Kwon-Seok Chae, Yong-Hwan Kim   +3 more
doaj   +1 more source

The newfound relationship between extrachromosomal DNAs and excised signal circles

FEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source