Results 51 to 60 of about 3,015 (151)

Cryo‐EM structure of GH43 β‐Xylosidase from Enterobacter cloacae provides insights into substrate specificity and the role of an auxiliary domain in enzymatic activity

The FEBS Journal, EarlyView.
Xylan, the second most abundant plant cell wall polysaccharide, is degraded by β‐xylanases and β‐xylosidases. Here, we present the 2.65 Å cryo‐EM structure of Enterobacter cloacae β‐xylosidase (EcXyl43, GH43) and the 2.4 Å X‐ray structure of its inactive F507A mutant.
Lorenzo Briganti, Andre Schutzer Godoy, Caio Cesar Mello Capetti, Rafaela Sachetto Fernandes, Vanessa O. A. Pellegrini, Ornella M. Ontañon, Eleonora Campos, Rodrigo V. Portugal, Igor Polikarpov   +8 more
wiley   +1 more source

Blocking protein quality control degradation leads to structural stabilization of DHFR indel variants

The FEBS Journal, EarlyView.
Blocking protein quality control degradation by deleting the E3 ligases Ubr1 or San1 stabilizes many DHFR insertion and deletion variants that are otherwise partially unfolded. These hypomorphic variants regain folding at lower temperatures or upon methotrexate binding, revealing that PQC degradation can remove proteins that are still functionally ...
Sven Larsen‐Ledet, Caroline H. Suhr, Sarah Gersing, Celeste M. Hackney, Amelie Stein, Kaare Teilum, Rasmus Hartmann‐Petersen   +6 more
wiley   +1 more source

On the Naturalistic Grounds of Grounding

Ratio, EarlyView.
ABSTRACT This paper examines whether grounding can be naturalized. We adopt a tripartite framework—Ocat (scientific catalogue of existents), Otyp (ontological types), and metaphysics (natures/modal profiles)—and show that classifying as such the relata of putative grounding claims forces a dilemma.
Raoni Arroyo, Jonas R. Becker Arenhart
wiley   +1 more source

Self‐Similar Blowup for the Cubic Schrödinger Equation

Communications on Pure and Applied Mathematics, Volume 79, Issue 8, Page 1831-1918, August 2026.
ABSTRACT We give a rigorous proof for the existence of a finite‐energy, self‐similar solution to the focusing cubic Schrödinger equation in three spatial dimensions. The proof is computer‐assisted and relies on a fixed point argument that shows the existence of a solution in the vicinity of a numerically constructed approximation.
Roland Donninger, Birgit Schörkhuber
wiley   +1 more source

Moutan Cortex Extract Mediates Diabetic Retinopathy by Blocking the ROS‑Triggered HIF‐1α/VEGF Axis in Retinal Pigment Epithelial Cells

eFood, Volume 7, Issue 4, August 2026.
Schematic diagram of the mechanism by which Moutan Cortex extract (MCE) ameliorates DR. MCE alleviates retinal structural damage and reduces neovascular lesions by downregulating the ROS/HIF‐1α/VEGF signaling axis. ABSTRACT Moutan Cortex is a functional food ingredient with multiple health benefits, but its effects on diabetic retinopathy (DR) remain ...
Mei‐rong Li, Xian‐yi Zhang, Wan‐ying Zhang, Nan Chen, Wei‐wei Lv, Tian‐yu Liu, Xu Guo, Ying‐ying Chen, Meng‐qi Zhang, Shu‐tao Sun, Mu‐xuan Wang, Qi‐dong Ren, Chao Liu, Jin‐yue Sun   +13 more
wiley   +1 more source

Smart Integration of Structural Biology and Medicinal Chemistry to Unlock Target‐Driven Drug Discovery

Medicinal Research Reviews, Volume 46, Issue 4, Page 921-944, July 2026.
ABSTRACT To enhance drug discovery efforts, medicinal chemists should evaluate, filter, and utilize relevant structural information about target proteins. Acquiring and interpreting protein structures is crucial for elucidating ligand‐receptor interactions and addressing ADME‐related considerations, making it an essential aspect of medicinal chemistry.
Matteo Rossi Sebastiano, Giulia Apprato, Serena Francisco, Giuseppe Ermondi, Giulia Caron   +4 more
wiley   +1 more source

How Long Is the Coast of Quantum Chemistry? Or, How to Evaluate Density Functional Theory as a Scientific Revolution

Natural Sciences, Volume 6, Issue 3, July 2026.
Within quantum chemistry, density functional theory (DFT) is a revolution. This serves as an example of a multitude of other scientific events, supporting the idea that revolutions are always large, if observed with the appropriate magnification. ABSTRACT Distinguishing scientific revolutions from normal science is a subjective, conflicting matter ...
Sebastian Kozuch
wiley   +1 more source

Stability of a Fully Discrete Local Discontinuous Galerkin Method for the Generalized Benjamin–Ono Equation

Numerical Methods for Partial Differential Equations, Volume 42, Issue 4, July 2026.
ABSTRACT The main purpose of this paper is to design a fully discrete local discontinuous Galerkin (LDG) scheme for the generalized Benjamin–Ono equation. First, we prove the L2$$ {L}^2 $$‐stability for the proposed semi‐discrete LDG scheme and obtained a suboptimal order of convergence for power nonlinear flux.
Mukul Dwivedi, Tanmay Sarkar
wiley   +1 more source

How important are quantum mechanical effects in controlling biological functions: Enzymes, electron transfer and bird navigation

Protein Science, Volume 35, Issue 7, July 2026.
Abstract In light of the centennial of the Schrödinger equation, this article addresses the popular idea that quantum mechanical effects play an important role in biological systems. We start by defining what is qualified as a quantum effect. We then clarify the idea that quantum mechanical tunneling is a crucial factor in enzyme catalysis.
Aoxuan Zhang, Arieh Warshel
wiley   +1 more source

Defining AV2‐1 as a novel pharmacological probe to target human and rodent TRPV2

British Journal of Pharmacology, Volume 183, Issue 13, Page 3538-3557, July 2026.
Abstract Background and Purpose Transient receptor potential vanilloid 2 (TRPV2) is a non‐selective cation channel implicated in immune cell functions. However, progress in understanding TRPV2 has been limited by a lack of potent and selective pharmacological tools, particularly those targeting the human variant. We aimed to identify and characterise a
Andrea Leipe, Julia A. Rocereta, Ruth A. Pumroy, Andreas Leffler, Michael Schaefer, Vera Moiseenkova‐Bell, Kerstin Hill   +6 more
wiley   +1 more source