Results 91 to 100 of about 562,963 (309)

Alternative results and robustness for fractional evolution equations with periodic boundary conditions

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2011
In this paper, we study periodic boundary value problems for a class of linear fractional evolution equations involving the Caputo fractional derivative.
JinRong Wang, Yong Zhou, Michal Fečkan
doaj   +1 more source

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

open access: yesFEBS 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   +3 more
wiley   +1 more source

Co-evolution, Determinism and Robustness

open access: yes, 1999
Robustness has long been recognised as a critical issue for coevolutionary learning. It has been achieved in a number of cases, though usually in domains which involve some form of non-determinism. We examine a deterministic domain - a pseudo real-time two-player game called Tron - and evolve a neural network player using a simple hill-climbing ...
A.D. Blair, Elizabeth Sklar, P. Funes
openaire   +1 more source

Robustness of Phylogenetic Inference Based on Minimum Evolution

open access: yesBulletin of Mathematical Biology, 2010
Minimum evolution is the guiding principle of an important class of distance-based phylogeny reconstruction methods, including neighbor-joining (NJ), which is the most cited tree inference algorithm to date. The minimum evolution principle involves searching for the tree with minimum length, where the length is estimated using various least-squares ...
Pardi, Fabio   +2 more
openaire   +4 more sources

A direct experimental test of Ohno’s hypothesis

open access: yeseLife
Gene duplication drives evolution by providing raw material for proteins with novel functions. An influential hypothesis by Ohno (1970) posits that gene duplication helps genes tolerate new mutations and thus facilitates the evolution of new phenotypes ...
Ljiljana Mihajlovic   +7 more
doaj   +1 more source

Parasites lead to evolution of robustness against gene loss in host signaling networks

open access: yesMolecular Systems Biology, 2008
Many biological networks can maintain their function against single gene loss. However, the evolutionary mechanisms responsible for such robustness remain unclear.
Marcel Salathé, Orkun S Soyer
doaj   +1 more source

Quantum localization bounds Trotter errors in digital quantum simulation

open access: yes, 2019
A fundamental challenge in digital quantum simulation (DQS) is the control of an inherent error, which appears when discretizing the time evolution of a quantum many-body system as a sequence of quantum gates, called Trotterization.
Hauke, P., Heyl, M., Zoller, P.
core   +1 more source

Function‐driven design of a surrogate interleukin‐2 receptor ligand

open access: yesFEBS Letters, EarlyView.
Interleukin (IL)‐2 signaling can be achieved and precisely fine‐tuned through the affinity, distance, and orientation of the heterodimeric receptors with their ligands. We designed a biased IL‐2 surrogate ligand that selectively promotes effector T and natural killer cell activation and differentiation. Interleukin (IL) receptors play a pivotal role in
Ziwei Tang   +9 more
wiley   +1 more source

Mechanisms of parasite‐mediated disruption of brain vessels

open access: yesFEBS Letters, EarlyView.
Parasites can affect the blood vessels of the brain, often causing serious neurological problems. This review explains how different parasites interact with and disrupt these vessels, what this means for brain health, and why these processes matter. Understanding these mechanisms may help us develop better ways to prevent or treat brain infections in ...
Leonor Loira   +3 more
wiley   +1 more source

Impact of translational error‐induced and error‐free misfolding on the rate of protein evolution

open access: yesMolecular Systems Biology, 2010
What determines the rate of protein evolution is a fundamental question in biology. Recent genomic studies revealed a surprisingly strong anticorrelation between the expression level of a protein and its rate of sequence evolution.
Jian‐Rong Yang   +2 more
doaj   +1 more source

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