Results 81 to 90 of about 1,504,335 (301)

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

Towards atomic-scale smooth surface manufacturing of β-Ga2O3 via highly efficient atmospheric plasma etching

International Journal of Extreme Manufacturing
The highly efficient manufacturing of atomic-scale smooth β -Ga _2 O _3 surface is fairly challenging because β -Ga _2 O _3 is a typical difficult-to-machine material.
Yongjie Zhang, Yuxi Xiao, Jianwen Liang, Chun Zhang, Hui Deng   +4 more
doaj   +1 more source

Properties of bio-based gum Arabic/clay aerogels [PDF]

, 2016
Lightweight bio-based aerogels from sustainable gum Arabic (GA) and sodium montmorillonite (Na+-MMT) clay were prepared by means of a simple freeze-drying process. GA/clay aerogels showed high porosity (87.9%–94.9%) of mainly open type and the mechanical
Abt, Tobias Martin, Sánchez Soto, Miguel, Wang, Liang   +2 more
core   +2 more sources

A fluorescence energy transfer‐based mechanical stress sensor for specific proteins in situ [PDF]

The FEBS Journal, 2008
To measure mechanical stress in real time, we designed a fluorescence resonance energy transfer (FRET) cassette, denoted stFRET, which could be inserted into structural protein hosts. The probe was composed of a green fluorescence protein pair, Cerulean and Venus, linked with a stable α‐helix. We measured the FRET efficiency of the
Fanjie, Meng, Thomas M, Suchyna, Frederick, Sachs   +2 more
openaire   +2 more sources

Valosin‐containing protein counteracts ATP‐driven dissolution of FUS condensates through its ATPase activity in vitro

FEBS Letters, EarlyView.
Biomolecular condensates formed by fused in sarcoma (FUS) are dissolved by high ATP concentrations yet persist in cells. Using a reconstituted system, we demonstrate that valosin‐containing protein (VCP), an AAA+ ATPase, counteracts ATP‐driven dissolution of FUS condensates through its D2 ATPase activity.
Hitomi Kimura, Shin‐ichi Tate, Kyota Yasuda   +2 more
wiley   +1 more source

Relationship between quantum mechanics with and without monopoles

, 2006
We show that the inclusion of the monopole field in the three- and five-dimensional spherically symmetric quantum mechanical systems, supplied by the addition of the special centrifugal term, does not yield any change in the radial wavefunction and in ...
Armen Nersessian, Armen Yeranyan, Bellucci, Bellucci, Bellucci, Bellucci, Feher, Feher, Gibbons, Gibbons, Gritsev, Higgs, Iwai, Iwai, Kalnins, Leemon, Levon Mardoyan, Mardoyan, Mardoyan, Mardoyan, Mardoyan, Mardoyan, Mardoyan, McIntosh, Meng, Mladenov, Mladenov, Nersessian, Nersessian, Tchrakian, Tolkachev, Tolkachev, Zwanziger   +32 more
core   +1 more source

A Study of Static and Dynamic Mechanical Behavior of the Substrate in Ultrasonic Consolidation [PDF]

, 2006
A new 2-D FEM model is developed for a fundamental study of the time dependent mechanical behavior of the substrate in ultrasonic consolidation. The simulation shows that for a given vibration condition, the amplitude of contact friction stress and ...
Li, Leijun, Zhang, Chunbo
core   +1 more source

Linking neurogenesis, oligodendrogenesis, and myelination defects to neurodevelopmental disruption in primary mitochondrial disorders

FEBS Letters, EarlyView.
Mitochondrial remodeling shapes neural and glial lineage progression by matching metabolic supply with demand. Elevated OXPHOS supports differentiation and myelin formation, while myelin compaction lowers mitochondrial dependence, revealing mitochondria as key drivers of developmental energy adaptation.
Sahitya Ranjan Biswas, Porter L. Tomsick, Alicia M. Pickrell, Paul D. Morton   +3 more
wiley   +1 more source

Optimization of Mechanical Activation Modes for UHMWPE Dry Mixed Powders and Nanomodificators in the Planetary Ball Mill Pulverisette 7

Инженерные технологии и системы, 2020
Introduction. Currently, in various technology areas, bronze, cast iron and other antifriction metals are replaced by polymer composites, which extend significantly service life of tribocoupling.
Vladimir N. Vodyakov, Kseniya A. Kulikovskaya   +1 more
doaj   +1 more source

Semiclassical theory of energy diffusive escape in a Duffing oscillator

, 2010
Motivated by recent experimental progress to read out quantum bits implemented in superconducting circuits via the phenomenon of dynamical bifurcation, transitions between steady orbits in a driven anharmonic oscillator, the Duffing oscillator, are ...
A. P. Dimitriev, A. P. Dimitriev, Alvise Verso, H. P. Breuer, H. Risken, J. Ankerhold, Joachim Ankerhold, M. I. Dykman, M. I. Dykman, M. I. Dykman, M. I. Dykman, U. Weiss   +11 more
core   +1 more source