Results 31 to 40 of about 1,977,737 (295)

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

FEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee, Dimitrios Bekiari, Sofia Doello, Karl Forchhammer   +3 more
wiley   +1 more source

Kinetic energy driven superconductivity, the origin of the Meissner effect, and the reductionist frontier

, 2011
Is superconductivity associated with a lowering or an increase of the kinetic energy of the charge carriers? Conventional BCS theory predicts that the kinetic energy of carriers increases in the transition from the normal to the superconducting state ...
Bjorken J. D., Heisenberg W., Heisenberg W., Hestenes D., Hirsch J. E., J. E. HIRSCH, Koppe H., Landau L., Pauli W., Schrödinger E., Smith H. G., Tinkham M.   +11 more
core   +1 more source

Kinetic Inflation in Stringy and Other Cosmologies [PDF]

, 1994
An inflationary epoch driven by the kinetic energy density in a dynamical Planck mass is studied. In the conformally related Einstein frame it is easiest to see the demands of successful inflation cannot be satisfied by kinetic inflation alone. Viewed in
A.H. Guth, C. Brans, G. Veneziano, J.J. Levin, J.J. Levin, J.J. Levin, Janna J. Levin, M. Gasperini, M. Gasperini, P. Jordan, P.G. Bergmann, R. Brustein, R. Brustein, R.H. Dicke, R.V. Wagoner, Y. Hu   +15 more
core   +2 more sources

Structural biology of ferritin nanocages

FEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Comparison of Muscle Thickness and Changing Ratio for Cervical Flexor Muscles During the Craniocervical Flexion Test Between Subjects With and Without Forward Head Posture

Physical Therapy Korea, 2022
Background: The craniocervical flexion test (CCFT) was developed for the activation and en-durance of deep cervical flexors. However, the muscle thickness and muscle thickness chang-ing ratio of the sternocleidomastoid (SCM) and deep cervical flexor (DCF)
Jae-hyun Lee, Ui-jae Hwang, Oh-yun Kwon
doaj   +1 more source

Spin diffusion and relaxation in three-dimensional isotropic Heisenberg antiferromagnets

, 1998
A theory is proposed for kinetic effects in isotropic Heisenberg antiferromagnets at temperatures above the Neel point. A metod based on the analysis of a set of Feynman diagrams for the kinetic coefficients is developed for studying the critical ...
A. A. Abrikosov, A. A. Migdal, A. Chubukov, A. Millis, A. Z. Patashinskii, B. I. Halperin, B. I. Halperin, D. P. Arovas, E. M. Lifshitz, G. Baskaran, G. M. Éliashberg, H. Monien, J. Hertz, K. A. Kikoin, K. A. Kikoin, K. A. Kikoin, K. Kawasaki, L. Kadanoff, M. N. Kiselev, P. W. Anderson, R. Freedman, S. Chakravarty, S. Kambe, S. V. Maleev, S. V. Maleev, T. Moriya, V. G. Vaks, Yu. A. Izyumov, Yu. Kagan   +28 more
core   +1 more source

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

FEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel, Carl P. O. Helmer, Shani Zev, Ronja Driller, Emily Buhr, Markus Reinbold, Renana Schwartz, Gabriel Foley, Mikael Boden, Daniel Garbe, Gerhard Schenk, Dan Thomas Major, Bernhard Loll, Thomas Brück   +13 more
wiley   +1 more source

Kinetic Energy Density Study of Some Representative Semilocal Kinetic Energy Functionals

, 2007
There is a number of explicit kinetic energy density functionals for non-interacting electron systems that are obtained in terms of the electron density and its derivatives. These semilocal functionals have been widely used in the literature.
Atkins P. W., Bader R. F. W., Bader R. F. W., David García-Aldea, Fermi E., García-Aldea D., J. E. Alvarellos, Kirzhnits D. A., March N. H., Parr R. G., Press W., Yonei K.   +11 more
core   +1 more source

Exploiting metabolic adaptations to overcome dabrafenib treatment resistance in melanoma cells

Molecular Oncology, EarlyView.
We show that dabrafenib‐resistant melanoma cells undergo mitochondrial remodeling, leading to elevated respiration and ROS production balanced by stronger antioxidant defenses. This altered redox state promotes survival despite mitochondrial damage but renders resistant cells highly vulnerable to ROS‐inducing compounds such as PEITC, highlighting redox
Silvia Eller, Susanne Ebner, Carmen Haselrieder, Julia K. Günther, Astrid Drasche, Sophie Strich, Chiara Volani, Andrea Medici, Aleksandar Nikolajevic, Alex Deltedesco, Johannes E. Sigmund, Michael J. Blumer, Martin Hermann, Johanna Vanacker, Gerald Brandacher, Eduard Stefan, Omar Torres‐Quesada, Jakob Troppmair   +17 more
wiley   +1 more source

Enhancing cognitive combat readiness: Gamers’ Behaviours concentrating on convergent learning style, tacit-latent, and kinetic-active knowledge acquisitions

Frontiers in Education, 2022
This study investigates gamers’ learning styles and knowledge acquisition behavioural patterns. It argues that gamers usually have different characteristics transforming themselves to gain distinctive competencies.
Sumiyana Sumiyana, Faridiah Aghadiati Fajri, Muhammad Adlin Saputra, Caraka Hadi   +3 more
doaj   +1 more source