Results 71 to 80 of about 4,764,395 (287)

Tuning Charge Order in (TMTTF)₂X by Partial Anion Substitution

Crystals, 2021
In the quasi-one-dimensional (TMTTF)2X compounds with effectively quarter-filled bands, electronic charge order is stabilized from the delicate interplay of Coulomb repulsion and electronic bandwidth.
Andrej Pustogow, Daniel Dizdarevic, Sebastian Erfort, Olga Iakutkina, Valentino Merkl, Gabriele Untereiner, Martin Dressel   +6 more
doaj   +1 more source

Structural biology of ferritin nanocages

FEBS 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

Computably Enumerable Partial Orders [PDF]

Computability, 2012
We study the degree spectra and reverse-mathematical applications of computably enumerable and co-computably enumerable partial orders. We formulate versions of the chain/antichain principle and ascending/descending sequence principle for such orders, and show that the former is strictly stronger than the latter.
Cholak, Peter A., Dzhafarov, Damir D., Schweber, Noah, Shore, Richard A.   +3 more
openaire   +2 more sources

Extrapolation techniques for first order hyperbolic partial differential equations [PDF]

, 1980
A uniform grid of step size h is superimposed on the space variable x in the first order hyperbolic partial differential equation ∂u/∂t + a ∂u/∂x = 0 (a > 0, x > 0, t > 0).
Twizell, E H
core  

Transferrin receptor 1‐mediated iron uptake supports thermogenic activation in human cervical‐derived adipocytes

FEBS Letters, EarlyView.
In this study, we found that human cervical‐derived adipocytes maintain intracellular iron level by regulating the expression of iron transport‐related proteins during adrenergic stimulation. Melanotransferrin is predicted to interact with transferrin receptor 1 based on in silico analysis.
Rahaf Alrifai, Mizuki Seo, Gyath Karadsheh, Fachrur Rizal Mahendra, Máté Á Demény, Ferenc Győry, János András Mótyán, László Fésüs, Endre Kristóf, Rini Arianti   +9 more
wiley   +1 more source

Concept-Oriented Model: Extending Objects with Identity, Hierarchies and Semantics [PDF]

Computer Science Journal of Moldova, 2012
The concept-oriented data model (COM) is an emerging approach to data modeling which is based on three novel principles: duality, inclusion and order.
Alexandr Savinov
doaj  

Intersection numbers from higher-order partial differential equations

Journal of High Energy Physics, 2023
We propose a new method for the evaluation of intersection numbers for twisted meromorphic n-forms, through Stokes’ theorem in n dimensions. It is based on the solution of an n-th order partial differential equation and on the evaluation of multivariate ...
Vsevolod Chestnov, Hjalte Frellesvig, Federico Gasparotto, Manoj K. Mandal, Pierpaolo Mastrolia   +4 more
doaj   +1 more source

Calpain small subunit homodimerization is robust and calcium‐independent

FEBS Letters, EarlyView.
Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy, Trina Dykstra‐MacPherson, Mathias A. Bell, Peter L. Davies, Ruby May A. Sullan   +4 more
wiley   +1 more source

On Structural Characterization and Computation of the Diameter and Girth of Bipartite Gap Poset Graphs with Python Application

Axioms
In this article, a correspondence between some important classes of numerical semigroups and well-known families of bipartite graphs has been established.
Maria Mehtab, Muhammad Ahsan Binyamin, Syed Sheraz Asghar, Amal S. Alali, Khawar Mehmood   +4 more
doaj   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

FEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa, Konstantinos Makryniotis, Theofani‐Iosifina Sousani, Evangelos Topakas, Vangelis Daskalakis, Maria Dimarogona   +5 more
wiley   +1 more source