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Сентябрь
2019

Новости за 19.09.2019

Reasons to care: Personal motivation as a key factor in the practice of the professional foster carer in Romania

Plos.org 

by Alexandru Neagoe, Doina Larisa Maria Neag, Daniel Lucheș

Personal motivation is a key factor in the service of foster care, impending both on the welfare of the child and on the satisfaction of the carer. This paper explores the benefits, challenges and dilemmas involved in the job of professional (i.e. state-supported) foster carer in Romania–a country where the issue of child protection has drawn a great deal of international attention over the last thirty years. The principal hypothesis concerns whether the benefits... Читать дальше...



Inverted translational control of eukaryotic gene expression by ribosome collisions

Plos.org 

by Heungwon Park, Arvind R. Subramaniam

The canonical model of eukaryotic translation posits that efficient translation initiation increases protein expression and mRNA stability. Contrary to this model, we find that increasing initiation rate can decrease both protein expression and stability of certain mRNAs in the budding yeast Saccharomyces cerevisiae. These mRNAs encode a stretch of polybasic residues that cause ribosome stalling. Our computational modeling predicts that the observed... Читать дальше...

The evolution of a new cell type was associated with competition for a signaling ligand

Plos.org 

by Charles A. Ettensohn, Ashrifia Adomako-Ankomah

There is presently a very limited understanding of the mechanisms that underlie the evolution of new cell types. The skeleton-forming primary mesenchyme cells (PMCs) of euechinoid sea urchins, derived from the micromeres of the 16-cell embryo, are an example of a recently evolved cell type. All adult echinoderms have a calcite-based endoskeleton, a synapomorphy of the Ambulacraria. Only euechinoids have a micromere-PMC lineage, however, which... Читать дальше...


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