Multiple epigenetic modulations occur to chromatin rather than to DNA itself and these influence gene expression or gene silencing profoundly. Both the creation of these post-translational modifications and the mechanisms of their readout are regulated significantly by electrical forces several of which are discussed. They are also influenced by phase separation which itself is driven by electrical forces.
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http://dx.doi.org/10.1007/978-3-031-68827-0_15 | DOI Listing |
Periodontol 2000
January 2025
ADA Forsyth Institute, Cambridge, Massachusetts, USA.
Tooth movement is a complex process involving the vascularization of the tissues, remodeling of the bone cells, and periodontal ligament fibroblasts under the hormonal and neuronal regulation mechanisms in response to mechanical force application. Therefore, it will inevitably impact periodontal tissues. Prolonged treatment can lead to adverse effects on teeth and periodontal tissues, prompting the development of various methods to reduce the length of orthodontic treatment.
View Article and Find Full Text PDFAdv Mater
January 2025
Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China.
Structural diversity of biomolecules leads to various supramolecular organizations and asymmetric architectures of self-assemblies with significant piezoelectric response. However, the piezoelectricity of biomolecular self-assemblies has not been fully explored and the relationship between supramolecular structures and piezoelectricity remains poorly understood, which hinders the development of piezoelectric biomaterials. Herein, for the first time, the piezoelectricity of vitamin-based self-assemblies for power generation is systematically explored.
View Article and Find Full Text PDFJ Phys Chem Lett
January 2025
Kenneth S. Pitzer Theory Center and Department of Chemistry, University of California, Berkeley, California 94720, United States.
This work constructs an advanced force field, the Completely Multipolar Model (CMM), to quantitatively reproduce each term of an energy decomposition analysis (EDA) for aqueous solvated alkali metal cations and halide anions and their ion pairings. We find that all individual EDA terms remain well-approximated in the CMM for ion-water and ion-ion interactions, except for polarization, which shows errors due to the partial covalency of ion interactions near their equilibrium. We quantify the onset of the dative bonding regime by examining the change in molecular polarizability and Mayer bond indices as a function of distance, showing that partial covalency manifests by breaking the symmetry of atomic polarizabilities while strongly damping them at short-range.
View Article and Find Full Text PDFSci Rep
January 2025
Department of Neurobiology, Poznan University of Physical Education, Poznan, Poland.
Previously, boost and sag effects seen in unfused tetanic contractions have been studied exclusively at constant stimulation frequency. However, intervals between successive discharges of motoneurons vary during voluntary movements. We therefore aimed to test whether the extra-efficient force production at the onset of contraction (boost) occurs during stimulation with variable intervals, and to what extent it depends on the level of interpulse interval (IPI) variability and history of stimulation.
View Article and Find Full Text PDFRev Physiol Biochem Pharmacol
January 2025
Institute of Medical Sciences, University of Aberdeen, Aberdeen, Scotland, UK.
Since the first Chapter dealt with the well-known charge-charge interactions familiar to biologists, this concluding Chapter introduces some key electrical forces, probably much less familiar, perhaps even unknown. LLPS (liquid liquid phase separation) which we have seen involved in so much of cell biology depends on multivalent, π-π and cation-π electrical forces. How these arise is dealt with here and may be especially useful as an aide memoir to return to when such issues arise within the bulk of the text.
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