Results 71 to 80 of about 1,129,712 (326)

Weak polyelectrolytes in the presence of counterion condensation with ions of variable size and polarizability

, 2014
Light scattering and viscometric measurements on weak polyelectrolytes show two important aspects of counterion condensation, namely, non-monotonic variation in the polyelectrolyte size with the increase in the electrostatic strength, and, monovalent ...
Dua, Arti, Kundu, Prasanta
core   +1 more source

AAA+ protein unfoldases—the Moirai of the proteome

FEBS Letters, EarlyView.
AAA+ unfoldases are essential molecular motors that power protein degradation and disaggregation. This review integrates recent cryo‐electron microscopy (cryo‐EM) structures and single‐molecule biophysical data to reconcile competing models of substrate translocation.
Stavros Azinas, Marta Carroni
wiley   +1 more source

pH‐mediated activation of the lysosomal arginine sensor SLC38A9

FEBS Letters, EarlyView.
Cells monitor nutrient levels via the lysosomal transporter SLC38A9 to activate the mechanistic target of rapamycin complex 1 (mTORC1). This study reveals that SLC38A9 function is regulated by pH. We identified histidine 544 as a critical pH sensor that undergoes conformational changes to control amino acid efflux from lysosomes; therefore, it ...
Xuelang Mu, Ampon Sae Her, Tamir Gonen
wiley   +1 more source

Advanced Architectures of Microfluidic Microcapacitor Arrays for 3D-Printable Biomimetic Electrostatic Artificial Muscles

Applied Sciences
Artificial muscles underlie exciting, novel technologies that have many wide-reaching applications: exoskeleton actuation, walker robots, prosthetics and stealthy underwater propulsion.
Terak Hornik, Michael Krause, Adam Ramlawi, James Lagos-Antonakos, Jeffrey K. Catterlin, Emil P. Kartalov   +5 more
doaj   +1 more source

Potential fluctuations in graphene due to correlated charged impurities in substrate

, 2013
We evaluate the autocorrelation function of the electrostatic potential in doped graphene due to nearby charged impurities. The screening of those impurities is described by a combination of the polarization function for graphene in random phase ...
Anicic, Rastko, Miskovic, Zoran
core   +1 more source

Electrostatic Defrosting

Small Methods
Abstract Electrification of ice has been studied for over half a century, mostly in the context of atmospheric science. Here, the polarizability and natural thermovoltage of a substrate‐bound frost sheet are exploited for frost removal by placing an actively charged electrode overhead.
Venkata Yashasvi Lolla, Hongwei Zhang, Beckett Z. Socha, Rui Qiao, Jonathan B. Boreyko   +4 more
openaire   +4 more sources

Degradation mechanism of the von Willebrand factor A2 domain by nattokinase

FEBS Letters, EarlyView.
Nattokinase, a natto‐derived protease, exhibits potent antithrombotic effects. This study demonstrates that nattokinase directly cleaves the von Willebrand factor (vWF) A2 domain in vitro. Unlike the native regulator ADAMTS13, nattokinase degrades folded vWF independently of shear stress.
Ryuichi Hyakumoto, Masatomo So, Ayako Furukawa, Kenji Sugase   +3 more
wiley   +1 more source

On electrostatic and Casimir force measurements between conducting surfaces in a sphere-plane configuration

, 2008
We report on measurements of forces acting between two conducting surfaces in a spherical-plane configuration in the 35 nm-1 micrometer separation range.
Bordag M, Boyer L, Bressi G, Bryksin V, Buks E, Casimir H B G, Chevrier J, Chiu H-C, D A R Dalvit, Dalvit D A R, de Man S, Decca RS, Derjaguin B V, Derjaguin B V, Fischbach E, Gundlach J H, Israelachvili J N, J H Brownell, Jourdan G, Kim W J, Lamoreaux S K, Lamoreaux S K, Lamoreaux S K, Lifshitz E M, Lifshitz E M, Lifshitz E M, Lifshitz E M, Ludwig T, M Brown-Hayes, Milonni P W, Milton K A, Milton K A, Mostepanenko V M, Munday J, Onofrio R, Palacios-Lidon E, Palasantzas G, Palik E D (ed), Pfeiffer O, R Onofrio, Reynaud S, Robertson M A, Timoshenko S, W J Kim   +43 more
core   +1 more source

Dammarenediol II enhances etoposide‐induced apoptosis by targeting O‐GlcNAc transferase and Akt/GSK3β/mTOR signaling in liver cancer

Molecular Oncology, EarlyView.
Etoposide induces DNA damage, activating p53‐dependent apoptosis via caspase‐3/7, which cleaves PARP1. Dammarenediol II enhances this apoptotic pathway by suppressing O‐GlcNAc transferase activity, further decreasing O‐GlcNAcylation. The reduction in O‐GlcNAc levels boosts p53‐driven apoptosis and influences the Akt/GSK3β/mTOR signaling pathway ...
Jaehoon Lee, Byung‐Cheol Han, Gi‐Bang Koo, Jihye Park, Mijin Kwon, Young Bin Park, Jae‐Mun Choi, Seung‐Ho Lee, Sangho Roh   +8 more
wiley   +1 more source

Parallel-plate and spherical capacitors in Born-Infeld electrostatics: An analytical study

, 2016
In 1934, Max Born and Leopold Infeld suggested and developed a nonlinear modification of Maxwell electrodynamics, in which the electrostatic self-energy of an electron was a finite value.
Moayedi, Seyed Kamran, Shafabakhsh, Mansoureh   +1 more
core   +1 more source