Results 51 to 60 of about 283 (216)
Linear Satisfiability Preserving Assignments
Journal of Artificial Intelligence Research, 2018 In this paper, we study several classes of satisfiability preserving assignments to the constraint satisfaction problem (CSP). In particular, we consider fixable, autark and satisfying assignments. Since it is in general NP-hard to find a nontrivial (i.e., nonempty) satisfiability preserving assignment, we introduce linear satisfiability preserving ...
Kei Kimura, Kazuhisa Makino
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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
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Linear maps preserving commutativity
Linear Algebra and its Applications, 1987 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Choi, M.D., Jafarian, A.A., Radjavi, H.
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Linear Mappings that Preserve Potent Operators [PDF]
Proceedings of the American Mathematical Society, 1995 Summary: Let \(H\) and \(K\) be complex Hilbert spaces, while \({\mathcal B}(H)\) and \({\mathcal B}(K)\) denote the algebras of all linear bounded operators on \(H\) and \(K\), respectively. We characterize surjective linear mappings from \({\mathcal B}(H)\) onto \({\mathcal B}(K)\) that preserve potent operators in both directions.
Omladič, Matjaž, Šemrl, Peter
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FEBS Letters, EarlyView.We identified a systemic, progressive loss of protein S‐glutathionylation—detected by nonreducing western blotting—alongside dysregulation of glutathione‐cycle enzymes in both neuronal and peripheral tissues of Taiwanese SMA mice. These alterations were partially rescued by SMN antisense oligonucleotide therapy, revealing persistent redox imbalance as ...
Sofia Vrettou, Brunhilde Wirth
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Outer preserving linear operators
Journal of Functional Analysis, 2011 The authors investigate bounded linear operators acting on the Hardy space \(H^2\) of analytic functions on the unit disc \(\mathbb{D}\) which preserve the set of \textit{shifted outer functions}. Recall that \(H^2\cong \ell^2(\mathbb{Z}_+)\), the isomorphism is given by \(\vec{a} = (a_k) \leftrightarrow f: f(z) = \sum_k a_k z^k\).
Gibson, P.C. +2 more
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Mechanisms of IgE‐mediated food allergy and the role of allergen‐specific B cells
FEBS Letters, EarlyView.Food allergy arises when allergen‐specific B cells preferentially produce immunoglobulin E (IgE) antibodies against harmless foods. This article explains the mechanisms driving IgE‐mediated reactions, highlights the central role of these B cells, and discusses how natural tolerance (NT) and oral immunotherapy (OIT) can reshape allergic immune responses.
Juan‐Felipe López +2 more
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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 +9 more
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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 +5 more
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Characterizing operations preserving separability measures via linear preserver problems [PDF]
Linear and Multilinear Algebra, 2011 We use classical results from the theory of linear preserver problems to characterize operators that send the set of pure states with Schmidt rank no greater than k back into itself, extending known results characterizing operators that send separable pure states to separable pure states.
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