Results 101 to 110 of about 12,414,930 (284)

Characterization of self-adjoint domains for regular even order $C$-symmetric differential operators

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2019
Let $C$ be a skew-diagonal constant matrix satisfying $C^{-1}=-C=C^{\ast}$. We characterize the self-adjoint domains for regular even order $C$-symmetric differential operators with two-point boundary conditions. Thepreviously known characterizations are
Jiong Sun   +3 more
doaj   +1 more source

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

open access: yesFEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka   +11 more
wiley   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

open access: yesFEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li   +2 more
wiley   +1 more source

Cell wall target fragment discovery using a low‐cost, minimal fragment library

open access: yesFEBS Letters, EarlyView.
LoCoFrag100 is a fragment library made up of 100 different compounds. Similarity between the fragments is minimized and 10 different fragments are mixed into a single cocktail, which is soaked to protein crystals. These crystals are analysed by X‐ray crystallography, revealing the binding modes of the bound fragment ligands.
Kaizhou Yan   +5 more
wiley   +1 more source

Oscillation Criteria for Even Order Neutral Equations with Distributed Deviating Argument

open access: yesInternational Journal of Differential Equations, 2010
We present new oscillation criteria for the even order neutral delay differential equations with distributed deviating argument [r(t)ψ(x(t))Z(n−1)(t)]′+∫abp(t,ξ)f[x(g(t,ξ))]dσ(ξ)=0,  t≥t0, where Z(t)=x(t)+q(t)x(t−τ).
Siyu Zhang, Fanwei Meng
doaj   +1 more source

Transitive Arcs in Planes of Even Order

open access: yesEuropean Journal of Combinatorics, 1996
In this paper, the author classifies all arcs in \(\mathrm{PG}(2,q)\), \(q\) even, which are stabilized by a transitive, irreducible (i.e., fixing neither a point nor any line) group \(G\), with the additional assumption that \(G\) does not stabilize a triangle in \(\mathrm{PG}(2,q)\) or in the extension \(\mathrm{PG}(2,q^3)\).
openaire   +2 more sources

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

open access: yesFEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee   +3 more
wiley   +1 more source

On the number of even latin squares of even order

open access: yes, 2020
We recall the Alon-Tarsi conjecture on the number of even latin squares. We introduce a map which switches the parity of a latin square under certain requirements. An example is included.
openaire   +2 more sources

Affine difference sets of even order

open access: yesJournal of Combinatorial Theory, Series A, 1989
Let G be a direct sum of a group of order \(n+1\) and of an Abelian group N of order n-1. If n is even (different from 2), and G admits an affine difference set relative to N then \(n=4k\) and N admits a \((4k-1,4k-1,k-1)\) difference set. Proofs, variations and corollaries are very interesting; for brevity we quote only that there is no nilpotent ...
Arasu, K.T., Jungnickel, Dieter
openaire   +2 more sources

Structural biology of ferritin nanocages

open access: yesFEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

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