Results 81 to 90 of about 1,733,478 (299)

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

Simulation Study on Local and Integral Mechanical Quantities at Single Trabecular Level as Candidates of Remodeling Stimuli

Journal of Biomechanical Science and Engineering, 2006
Mechanical quantities at the microstructural level play important roles as stimuli of trabecular bone remodeling by which cancellous bone maintains and adapts its trabecular structure to the mechanical environment.
Ken-ichi TSUBOTA, Taiji ADACHI
doaj   +1 more source

Critical-like Features of Stress Response in Frictional Packings

, 2015
The mechanical response of static, unconfined, overcompressed face centred cubic, granular arrays is studied using large-scale, discrete element method simulations.
Cakir, Abdullah, Silbert, Leonardo E.
core   +1 more source

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

Thermal Characterization and Lifetime Prediction of LED Boards for SSL Lamp [PDF]

, 2013
This work presents a detailed 3-D thermo-mechanical modelling of two LED board technologies to compare their performance. LED board are considered to be used in high power 800 lumen retrofit SSL (Solid State Lighting) lamp.
Formanek, J., Jakovenko, J.
core   +1 more source

Organ‐specific redox imbalances in spinal muscular atrophy mice are partially rescued by SMN antisense oligonucleotides

FEBS Letters, EarlyView.
We identified a systemic, progressive loss of protein S‐glutathionylation—detected by nonreducing western blotting—alongside dysregulation of glutathione‐cycle enzymes in both neuronal and peripheral tissues of Taiwanese SMA mice. These alterations were partially rescued by SMN antisense oligonucleotide therapy, revealing persistent redox imbalance as ...
Sofia Vrettou, Brunhilde Wirth
wiley   +1 more source

On the dynamics of mechanical failures in magnetized neutron-star crusts

, 2012
We consider the dynamics of a mechanical failure induced by a shear stress in a strongly magnetized neutron-star crust. We show that even if the elastic properties of the crust allow the creation of a shear crack, the strongly sheared magnetic field ...
Ashby, Blaes, Bridgeman, Chamel, Chugunov, Goldreich, Horowitz, Jones, Kostrov, Landau, Levin, Link, Lyutikov, Lyutikov, Maxim Lyutikov, Molinari, Perna, Pons, Thompson, Thompson, Woods, Yuri Levin   +21 more
core   +1 more source

Tau acetylation at K331 has limited impact on tau pathology in vivo

FEBS Letters, EarlyView.
We mapped tau post‐translational modifications in humanized MAPT knock‐in mice and in amyloid‐bearing double knock‐in mice. Acetylation within the repeat domain, particularly around K331, showed modest increases under amyloid pathology. To test functional relevance, we generated MAPTK331Q knock‐in mice.
Shoko Hashimoto, Yukio Matsuba, Mika Takahashi, Takaomi C. Saido   +3 more
wiley   +1 more source

Mechanical stress facilitates calcium influx and growth of alveolar epithelial cells via activation of the BDKRB1/Ca2+/CaMKII/MEK1/ERK axis

Respiratory Research
Background Mechanical stress and calcium metabolism are associated with lung development and various pulmonary diseases. Our previous research demonstrated that BDKRB1/Ca2+ signal transduction may be involved in lung dysplasia resulting from scoliosis ...
Ying Zhang, Qing-dong Zhang, Quan Li, Zhi-yue Shi, Cheng Pan, Rong-shuang Yan, De-rui Fei, Shi-xin Xu, Yang Luo   +8 more
doaj   +1 more source

Periodic mechanical stress activates MEK1/2-ERK1/2 mitogenic signals in rat chondrocytes through Src and PLCγ1

Brazilian Journal of Medical and Biological Research, 2011
The mitogenic effects of periodic mechanical stress on chondrocytes have been studied extensively but the mechanisms whereby chondrocytes sense and respond to periodic mechanical stress remain a matter of debate.
Kewei Ren, Yimin Ma, Yumin Huang, Wenwei Liang, Feng Liu, Qing Wang, Weiding Cui, Zhengyu Liu, Guoyong Yin, Weimin Fan   +9 more
doaj   +1 more source