Results 81 to 90 of about 19,554,258 (410)
Observation of a shape resonance of the positronium negative ion
Nature Communications, 2016 The Positronium negative ion is formed by two electrons bound to a positron, and experimental investigations of its states and energy levels are difficult due to its short lifetime.
Koji Michishio +8 more
doaj +1 more source
A new parametrizable model of molecular electronic structure
, 2011 A new electronic structure model is developed in which the ground state energy of a molecular system is given by a Hartree-Fock-like expression with parametrized one- and two-electron integrals over an extended (minimal + polarization) set of ...
Laikov, Dimitri N.
core +1 more source
The molecular and crystal structure of (+)-mianserin hydrobromide [PDF]
, 1973 X-ray analysis of crystals of (+)-mianserin hydrobromide (1,2,3,4,10,14b-hexahydro-2-methyl-dibenzol[c,f]pyrazino[1,2-a]azepine) has established the stereochemistry and absolute configuration of this compound (S at 14b).\ud \ud The crystals are ...
Feil, D., Ru, C. van
core +3 more sources
FEBS Letters, EarlyView.The NlpC_P60 superfamily of peptidases is recognised by its key role in bacterial cell wall homeostasis. Recently, studies have also described the involvement of NlpC_P60‐like enzymes in bacterial competitive mechanisms and pathogenesis across several lineages.
Catharina dos Santos Silva +1 more
wiley +1 more source
Nature Communications, 2019 Holliday junctions (HJs) are four-way DNA structures that occur in DNA repair by homologous recombination which are removed by nucleases such as RuvC. Here the authors provide structural and biochemical details on the steps required for the completion of
Karolina Maria Górecka +5 more
doaj +1 more source
Distinctive dielectric properties of nematic liquid crystal dimers [PDF]
, 2017 We provide an overview of the effect of the molecular structure on the dielectric properties of dimers exhibiting nematic and twist-bend nematic phases with special focus on how the conformational distribution changes are reflected by the dielectric ...
de la Fuente, Maria del Rosario +7 more
core +2 more sources
Making tau amyloid models in vitro: a crucial and underestimated challenge
FEBS Letters, EarlyView.This review highlights the challenges of producing in vitro amyloid assemblies of the tau protein. We review how accurately the existing protocols mimic tau deposits found in the brain of patients affected with tauopathies. We discuss the important properties that should be considered when forming amyloids and the benchmarks that should be used to ...
Julien Broc, Clara Piersson, Yann Fichou
wiley +1 more source
Differentiation between enamines and tautomerizable imines in the oxidation reaction with TEMPO
Nature Communications, 2018 Tautomerization of imines into enamines is the basis of their similar reactivity; however, minor structural changes may lead to different outcomes. Here, the authors show that the reaction of cyclohexanone and amines in presence of TEMPO affords either α-
Xiaoming Jie +5 more
doaj +1 more source
eLife, 2020 Abundant APOBEC3 (A3) deaminase-mediated mutations can dominate the mutational landscape (‘mutator phenotype’) of some cancers, however, the basis of this sporadic vulnerability is unknown.
Birong Shen +5 more
doaj +1 more source
How Water’s Properties Are Encoded in Its Molecular Structure and Energies
Chemical Reviews, 2017 How are water’s material properties encoded within the structure of the water molecule? This is pertinent to understanding Earth’s living systems, its materials, its geochemistry and geophysics, and a broad spectrum of its industrial chemistry. Water has
Emiliano Brini +5 more
semanticscholar +1 more source