Results 61 to 70 of about 825,816 (298)
A Second Crystal Polymorph of Anilinium Picrate [PDF]
, 2004 The crystal structure of a second monoclinic polymorph of anilinium picrate shows a three-dimensional hydrogen-bonded polymer with strong primary interspecies interactions involving the proximal phenolate and adjacent nitro group O-atom acceptors and ...
Healy, Peter +2 more
core +2 more sources
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 +13 more
wiley +1 more source
Spectroscopic studies of the mechanism for hydrogen-induced exfoliation of InP [PDF]
, 2005 The motion and bonding configurations of hydrogen in InP are studied after proton implantation and subsequent annealing, using Fourier transform infrared (FTIR) spectroscopy. It is demonstrated that, as implanted, hydrogen is distributed predominantly in
Atwater, Harry A. +4 more
core +1 more source
Hyperosmotic stress induces PARP1‐mediated HPF1‐dependent mono(ADP‐ribosyl)ation
FEBS Letters, EarlyView.Sorbitol‐induced hyperosmotic stress rapidly induces reversible mono(ADP‐ribosyl)ation (MARylation) on PARP1 without the signs of genotoxic signaling. We show that PARP1 autoMARylation is HPF1 dependent and forms hydroxylamine‐resistant O‐glycosidic linkages.
Anna Georgina Kopasz +11 more
wiley +1 more source
Acta Crystallographica Section E, 2010 In the title melaminium salt, 2,4,6-triamino-1,3,5-triazin-1-ium iodide monohydrate, C3H7N6+·I−·H2O, the components are linked via N—H...O, N—H...N, O—H...I and N—H...I hydrogen bonds ...
Min Min Zhao, Ping Ping Shi
doaj +1 more source
Ab-initio calculation of the effect of stress on the chemical activity of graphene [PDF]
, 2008 Graphene layers are stable, hard, and relatively inert. We study how tensile stress affects $\sigma$ and $\pi$ bonds and the resulting change in the chemical activity. Stress affects more strongly $\pi$ bonds that can become chemically active and bind to
J. A. Vergés +2 more
core +3 more sources
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
2-(Ethylsulfinyl)imidazo[1,2-a]pyridine-3-sulfonamide
Acta Crystallographica Section E, 2012 The supramolecular structure of the title compound, C9H11N3O3S2, is defined by two intermolecular hydrogen bonds. Pairs of N—H...N hydrogen bonds link the molecules into centrosymmetric dimers and N—H...O hydrogen bonds link the ...
Jing Li, Haixia Ma, Yaling Gong
doaj +1 more source
Hydrogen bonds and asymmetrical heat diffusion in a-Helices. A Computational Analysis
, 2015 In this work, we report the heat rectifying capability of a-helices. Using molecular dynamics simulations we show an increased thermal diffusivity in the C-Terminal to N-Terminal direction of propagation.
Gutierrez, Gonzalo +1 more
core +2 more sources
The effect of protein backbone hydration on the amide vibrations in Raman and Raman optical activity spectra [PDF]
, 2019 Raman and specifically Raman optical activity (ROA) spectroscopy are very sensitive to the solution structure and conformation of biomolecules. Because of this strong conformational sensitivity, density functional theory (DFT) calculations are often used
Bultinck, Patrick +2 more
core +2 more sources