Results 91 to 100 of about 3,222,582 (225)

From junk to function — How weak selection in eukaryotes builds new parts and drives genomic complexity

open access: yesFEBS Letters, EarlyView.
How do genomes gain new functional parts? In eukaryotes, which tend to evolve under weak selection, much of the genome is junk. Palazzo and Qiu borrow the logic of Markov chains to show how non‐functional DNA becomes functional through the appearance of intermediate states, which arise due to epistasis, buffering, and biochemical messiness, allowing ...
Alexander F. Palazzo, Yi Qiu
wiley   +1 more source

The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation

open access: yesFEBS Letters, EarlyView.
Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge   +6 more
wiley   +1 more source

"Satisfaction garantie" - séquence 3a : L’arrivée de l'humanoïde

open access: yes, 2014
Résumé de la séquence : L’instant choisi dans la nouvelle d’Isaac Asimov correspond à l’arrivée du robot, Tony, chez Monsieur et Madame Belmont. Le Docteur Calvin explique alors le but de l’expérience, décrivant notamment toutes les caractéristiques de ...
vincentduquennoy
core   +1 more source

Prospecting the protein design landscape

open access: yesFEBS Letters, EarlyView.
This review outlines the current state of various protein design approaches. We discuss the current possibilities enabled by recently released tools, highlight future avenues to pursue in protein design, and underscore the crucial role of key databases and resources for successful protein design workflows.
Jakob R. Riccabona   +4 more
wiley   +1 more source

Concevoir une séquence d’enseignement-apprentissage de l’adjectif : pièges et difficultés en formation initiale

open access: yesLidil
Our contribution analyses the traces of students undergoing initial teacher training for primary teaching. In writings on the preparation of sequences on the adjective and extracts from their research dissertations, we observe how novice teachers deal ...
Annette Schmehl-Postaï
doaj   +1 more source

L‐aspartate oxidase provides new insights into fumarate reduction in anaerobic darkness in Synechocystis sp. PCC6803

open access: yesFEBS Letters, EarlyView.
Synechocystis strains deficient in succinate dehydrogenase (SDH) secrete more succinate than the WT under dark anaerobic conditions, supporting that SDH then primarily acts as SDH, not as a fumarate reductase. L‐aspartate oxidase (Laspo) from Synechocystis is functional under anaerobic conditions, reducing fumarate to succinate.
Kateryna Kukil   +3 more
wiley   +1 more source

Promouvoir la réflexion métalinguistique des élèves de 1ère année d’Enseignement Secondaire Obligatoire dans un contexte plurilingue

open access: yesThélème
Cet article présente les résultats de la mise en œuvre d’une séquence didactique de grammaire conçue selon le prototype Egramint (SDGE) dans une école publique de la Communauté valencienne.
Raquel Sanz Moreno
doaj   +1 more source

RNA‐related functions of BRCA2 in transcription, replication, and genome stability

open access: yesFEBS Letters, EarlyView.
Beyond its role in homologous recombination, BRCA2 regulates R‐loop homeostasis, DNA–RNA hybrid resolution, RNA polymerase II dynamics, and transcriptional activation. Disruption of any of these functions can contribute to genome instability, inflammatory signaling, and tumorigenesis. BRCA2 is a central tumor suppressor protein best known for its roles
Lucia Alvaro‐Aranda   +2 more
wiley   +1 more source

[S1] Bilan de la séquence

open access: yes, 2013
Nous voici rendu au terme de la première séquence du cours, voici donc quelques éléments de bilan que vous pouvez compléter en commentaire si vous le souhaitez.
Jean-Michel Salaun
core  

Artificial molecular machines and motors—Design and control of nanoscale motion

open access: yesFEBS Letters, EarlyView.
Molecules are constantly moving because of thermal fluctuations, but random motion alone cannot be exploited to perform directional tasks. Artificial molecular machines use chemical, electrical, or light energy to bias this motion. Molecular shuttles, rotary motors, and supramolecular pumps illustrate how nanoscale movement can be controlled and ...
Leonardo Andreoni, Alberto Credi
wiley   +1 more source

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