Results 41 to 50 of about 747,493 (287)

Interplay between circadian and other transcription factors—Implications for cycling transcriptome reprogramming

FEBS Letters, EarlyView.
This perspective highlights emerging insights into how the circadian transcription factor CLOCK:BMAL1 regulates chromatin architecture, cooperates with other transcription factors, and coordinates enhancer dynamics. We propose an updated framework for how circadian transcription factors operate within dynamic and multifactorial chromatin landscapes ...
Xinyu Y. Nie, Jerome S. Menet
wiley   +1 more source

Perturbation Methods in Solving the Problem of Two Bodies of Variable Masses with Application of Computer Algebra

Applied Sciences
The classical many-body problem is not integrable, so perturbation theory based on an exact solution to the two-body problem is usually applied to investigate the dynamics of planetary systems.
Alexander Prokopenya, Mukhtar Minglibayev, Aigerim Ibraimova   +2 more
doaj   +1 more source

Joint Action and Competition between Centrifugal, Magnetorotational, and Magnetic Buoyancy Instabilities

The Astrophysical Journal Supplement Series, 2023
Instabilities driven by some combination of rotation, velocity shear, and magnetic field in a stratified fluid under gravity play an important role in many astrophysical settings.
M. J. Gradzki, D. W. Hughes, K. A. Mizerski   +2 more
doaj   +1 more source

Advanced Methods in Black-Hole Perturbation Theory

, 2013
Black-hole perturbation theory is a useful tool to investigate issues in astrophysics, high-energy physics, and fundamental problems in gravity. It is often complementary to fully-fledged nonlinear evolutions and instrumental to interpret some results of
Pani, Paolo
core   +1 more source

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source

Nonlinear oscillations of the absolute elastic weightless string. Asymptotics construction

Lietuvos Matematikos Rinkinys, 2007
The mathematical model of string nonlinear oscillations is presented. To find the asymptotic solution of the problem an averaging scheme is constructed.
Aleksandras Krylovas, Paulius Miškinis
doaj   +1 more source

Time after time – circadian clocks through the lens of oscillator theory

FEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo, Carolin Ector, Hanspeter Herzel   +2 more
wiley   +1 more source

Physics-Based Neural Network Methods for Solving Parameterized Singular Perturbation Problem

Computation, 2021
This work is devoted to the description and comparative study of some methods of mathematical modeling. We consider methods that can be applied for building cyber-physical systems and digital twins.
Tatiana Lazovskaya, Galina Malykhina, Dmitry Tarkhov   +2 more
doaj   +1 more source

Non-Orthogonal Density Matrix Perturbation Theory

, 2005
Density matrix perturbation theory [Phys. Rev. Lett. Vol. 92, 193001 (2004)] provides an efficient framework for the linear scaling computation of response properties [Phys. Rev. Lett. Vol. 92, 193002 (2004)].
Challacombe, Matt, Niklasson, Anders M. N., Weber, Valery   +2 more
core   +1 more source

An upstream open reading frame regulates expression of the mitochondrial protein Slm35 and mitophagy flux

FEBS Letters, EarlyView.
This study reveals how the mitochondrial protein Slm35 is regulated in Saccharomyces cerevisiae. The authors identify stress‐responsive DNA elements and two upstream open reading frames (uORFs) in the 5′ untranslated region of SLM35. One uORF restricts translation, and its mutation increases Slm35 protein levels and mitophagy.
Hernán Romo‐Casanueva, Ariann E. Mendoza‐Martínez, P. Abril Medina‐Flores, Carlos Campero‐Basaldua, Alexander DeLuna, Soledad Funes   +5 more
wiley   +1 more source