We show that the phosphorylation of 4E-BP2 acts as a triggering event to shape its folding-function landscape that is delicately balanced between conflicting favorable energetics and intrinsically unfavorable topological connectivity. We further provide first evidence that the fitness landscapes of proteins at the threshold of disorder can differ considerably from ordered domains.
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http://dx.doi.org/10.1039/c5cp04765j | DOI Listing |
Netw Neurosci
December 2024
Laufer Center for Physical and Quantitative Biology, Stony Brook University, Stony Brook, NY, USA.
The integration-segregation framework is a popular first step to understand brain dynamics because it simplifies brain dynamics into two states based on global versus local signaling patterns. However, there is no consensus for how to best define the two states. Here, we map integration and segregation to order and disorder states from the Ising model in physics to calculate state probabilities, and , from functional MRI data.
View Article and Find Full Text PDFDalton Trans
November 2024
School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Xiaolingwei 200, Nanjing 210094, China.
As a new type of polynitrogen species that is stable at room temperature, the pentazolate anion (-N) has attracted much attention in the field of high-energy density materials, but its energy and stability are unbalanced. Cocrystallisation can balance their properties to some extent by forming new chemical compositions from existing -N compounds through non-covalent interactions. This article reviews the research progress of -N cocrystals in recent years, including synthetic methods, cocrystals of metal-N compounds, and cocrystals of nonmetallic pentazolate salts.
View Article and Find Full Text PDFChem Asian J
November 2024
Department of Chemistry, Birla Institute of Technology and Science-Pilani, Hyderabad Campus, Jawahar Nagar, Kapra Mandal, Hyderabad, Telangana, 500078, India.
Well-Tempered Metadynamics (WT-MetaD) simulations indicate that composite materials made up of Na-Montmorillonite (Na-MMT) coated with ionic liquids (ILs) having hydrophilic cations serve as good adsorbents for a hexameric (1,4) linked β-D-glucopyranoside (BGLC). Hydrophilic IL cations are effectively coated on the negative charges lining the Na-MMT surface while attracting simultaneously the polar oligosaccharides. In this work we have used two less conventional polyethylene glycol (PEG) based IL cations, [mim peg] and [mim peg], paired with [tfN] and Cl anions.
View Article and Find Full Text PDFAdv Mater
November 2024
Department of Chemistry, Tsinghua University, Beijing, 100084, China.
Exploring single-atom (SA) catalysts in hybrid urea-assisted water electrolysis offers a viable alternative to both Hydrogen (H) generation and polluted water treatment. However, the unfavorable electronic stabilization, low SA content, intrinsically slow kinetics, and imbalanced adsorption-desorption steps are the bottleneck for its scale-up implementation. Herein, a rare-earth Terbium single atom (Tb) is topologically stabilized on defect-rich CoO (Tb@d-CoO) by Tb─O co-ordination for urea oxidation reaction (UOR) and H evolution reaction (HER).
View Article and Find Full Text PDFPhys Rev Lett
October 2024
Joint Quantum Institute, Department of Physics, University of Maryland, College Park, Maryland 20742, USA.
This Letter presents a theory of interaction-induced band-flattening in strongly correlated electron systems. We begin by illustrating an inherent connection between flat bands and index theorems, and presenting a generic prescription for constructing flat bands by periodically repeating local Hamiltonians with topological zero modes. Specifically, we demonstrate that a Dirac particle in an external, spatially periodic magnetic field can be cast in this form.
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