Results 71 to 80 of about 355,905 (327)
Peptide‐based ligand antagonists block a Vibrio cholerae adhesin
FEBS Letters, EarlyView.The structure of a peptide‐binding domain of the Vibrio cholerae adhesin FrhA was solved by X‐ray crystallography, revealing how the inhibitory peptide AGYTD binds tightly at its Ca2+‐coordinated pocket. Structure‐guided design incorporating D‐amino acids enhanced binding affinity, providing a foundation for developing anti‐adhesion therapeutics ...
Mingyu Wang +9 more
wiley +1 more source
Sensors, 2019 This study proposes a high-sensitivity microwave sensor based on an interdigital-capacitor-shaped defected ground structure (IDCS-DGS) in a microstrip transmission line for the dielectric characterization of planar materials.
Junho Yeo, Jong-Ig Lee
doaj +1 more source
Structural insight into polyphenol oxidation during black tea fermentation
Food Chemistry: X, 2023 Polyphenol oxidation during fermentation plays a critical role in the formation of flavor and function of black tea. However, how the specific structures of tea polyphenols affect their oxidation kinetics during black tea fermentation is still unknown ...
Lin Chen +4 more
doaj +1 more source
Disordered but rhythmic—the role of intrinsic protein disorder in eukaryotic circadian timing
FEBS Letters, EarlyView.Unstructured domains known as intrinsically disordered regions (IDRs) are present in nearly every part of the eukaryotic core circadian oscillator. IDRs enable many diverse inter‐ and intramolecular interactions that support clock function. IDR conformations are highly tunable by post‐translational modifications and environmental conditions, which ...
Emery T. Usher, Jacqueline F. Pelham
wiley +1 more source
The operator rings of topological symmetric orbifolds and their large N limit
Journal of High Energy PhysicsWe compute the structure constants of topological symmetric orbifold theories up to third order in the large N expansion. The leading order structure constants are dominated by topological metric contractions.
Sujay K. Ashok, Jan Troost
doaj +1 more source
Arithmetic Nullstellensatz and Nonstandard Methods [PDF]
, 2014 In this study we find height bounds for polynomial rings over integral domains. We apply nonstandard methods and hence our constants will be ineffective.
Göral, Haydar
core
Rings of Constants of the Formk[f] [PDF]
Communications in Algebra, 2006 Let k[X] be the algebra of polynomials in n variables over a field k of characteristic zero, and let f ∊ k[X]∖ k. We present a construction of a derivation d of k[X] whose ring of constants is equal to the integral closure of k[f] in k[X]. A similar construction for fields of rational functions is also given.
Essen, A.R.P. van den +2 more
openaire +2 more sources
Mechanisms of parasite‐mediated disruption of brain vessels
FEBS Letters, EarlyView.Parasites can affect the blood vessels of the brain, often causing serious neurological problems. This review explains how different parasites interact with and disrupt these vessels, what this means for brain health, and why these processes matter. Understanding these mechanisms may help us develop better ways to prevent or treat brain infections in ...
Leonor Loira +3 more
wiley +1 more source
Additional Factors Affecting the Rate and Mechanism of Ring Opening Reaction [PDF]
مجلة التربية والعلم, 2005 The reactions of thiosulphate ion with some bromoalkylamines of structure RR'N-(CH2)n-Br, where n = 2,3,4,5 or 6 and R - R1 - H, methyl, ethyl or isopropyl, were studied kinetically in an aqueous solution at different pH, The kinetic results for these ...
Mahmoud S.Saieed
doaj +1 more source
Generators of rings of constants for some diagonal derivations in polynomial rings
Journal of Pure and Applied Algebra, 1995 Let \(K\) be a field of characteristic zero. The authors show that if \(n\geq 3\), that given \(r\geq 0\) there exists a diagonal \(K\)-derivation of \(K[x_1, \dots, x_n]\) such that the minimal number of generators over \(K\) of the ring of constants is equal to \(r\).
Nowicki, Andrzej, Strelcyn, Jean-Marie
openaire +2 more sources