Results 111 to 120 of about 6,209,872 (360)
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 +5 more
wiley +1 more source
Generalized Van der Pol equation and Hilbert's 16th problem
Electronic Journal of Differential Equations, 2014 In this article, we study the bifurcation of limit cycles from the harmonic oscillator $\dot{x}=y$, $\dot{y}=-x$ in the system $$ \dot{x}=y,\quad \dot{y}=-x+\varepsilon f(y)\big(1-x^2\big), $$ where $\varepsilon$ is a small positive parameter ...
Xenakis Ioakim
doaj
Analytical estimations of limit cycle amplitude for delay-differential equations
Electronic Journal of Qualitative Theory of Differential Equations, 2016 The amplitude of limit cycles arising from Hopf bifurcation is estimated for nonlinear delay-differential equations by means of analytical formulas. An improved analytical estimation is introduced, which allows more accurate quantitative prediction of ...
Tamás Molnár +2 more
doaj +1 more source
In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS
FEBS Letters, EarlyView.We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka +11 more
wiley +1 more source
Electronic Journal of Differential Equations, 2018 In this article we obtain two explicit polynomials, whose simple positive real roots provide the limit cycles which bifurcate from the periodic orbits of a family of polynomial differential centers of order 5, when this family is perturbed inside the ...
Jaume LLibre +2 more
doaj
Bounded Limit Cycles of Polynomial Foliations of $$\mathbb {C}^{2}$$ C 2 [PDF]
, 2016 Nataliya Goncharuk, Yury Kudryashov
openalex +1 more source
Sequence determinants of RNA G‐quadruplex unfolding by Arg‐rich regions
FEBS Letters, EarlyView.We show that Arg‐rich peptides selectively unfold RNA G‐quadruplexes, but not RNA stem‐loops or DNA/RNA duplexes. This length‐dependent activity is inhibited by acidic residues and is conserved among SR and SR‐related proteins (SRSF1, SRSF3, SRSF9, U1‐70K, and U2AF1).
Naiduwadura Ivon Upekala De Silva +10 more
wiley +1 more source
Bifurcation of limit cycles for cubic reversible systems
Electronic Journal of Differential Equations, 2014 This article is concerned with the bifurcation of limit cycles of a class of cubic reversible system having a center at the origin. We prove that this system has at least four limit cycles produced by the period annulus around the center under cubic ...
Yi Shao, Kuilin Wu
doaj
Upper bounds for the number of limit cycles of someplanar polynomial differential systems [PDF]
, 2010 Armengol Gasull +3 more
openalex +1 more source
FEBS Letters, EarlyView.The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li +2 more
wiley +1 more source