Добавить новость
ru24.net
News in English
Август
2020

Новости за 26.08.2020

Comparative analyses of alphaviral RNA:Protein complexes reveals conserved host-pathogen interactions

Plos.org 

by Natasha N. Gebhart, Richard W. Hardy, Kevin J. Sokoloski

The identification of host / pathogen interactions is essential to both understanding the molecular biology of infection and developing rational intervention strategies to overcome disease. Alphaviruses, such as Sindbis virus, Chikungunya virus, and Venezuelan Equine Encephalitis virus are medically relevant positive-sense RNA viruses. As such, they must interface with the host machinery to complete their infectious lifecycles. Nonetheless... Читать дальше...



Dissecting maternal and fetal genetic effects underlying the associations between maternal phenotypes, birth outcomes, and adult phenotypes: A mendelian-randomization and haplotype-based genetic score analysis in 10,734 mother–infant pairs

Plos.org 

by Jing Chen, Jonas Bacelis, Pol Sole-Navais, Amit Srivastava, Julius Juodakis, Amy Rouse, Mikko Hallman, Kari Teramo, Mads Melbye, Bjarke Feenstra, Rachel M. Freathy, George Davey Smith, Deborah A. Lawlor, Jeffrey C. Murray, Scott M. Williams, Bo Jacobsson, Louis J. Muglia, Ge Zhang

Читать дальше...

Hypomodified tRNA in evolutionarily distant yeasts can trigger rapid tRNA decay to activate the general amino acid control response, but with different consequences

Plos.org 

by Thareendra De Zoysa, Eric M. Phizicky

All tRNAs are extensively modified, and modification deficiency often results in growth defects in the budding yeast Saccharomyces cerevisiae and neurological or other disorders in humans. In S. cerevisiae, lack of any of several tRNA body modifications results in rapid tRNA decay (RTD) of certain mature tRNAs by the 5’-3’ exonucleases Rat1 and Xrn1. As tRNA quality control decay mechanisms are not extensively studied in other eukaryotes, we studied... Читать дальше...

Gluconeogenesis and PEPCK are critical components of healthy aging and dietary restriction life extension

Plos.org 

by Brian Onken, Natallia Kalinava, Monica Driscoll

High glucose diets are unhealthy, although the mechanisms by which ikelevated glucose is harmful to whole animal physiology are not well understood. In Caenorhabditis elegans, high glucose shortens lifespan, while chemically inflicted glucose restriction promotes longevity. We investigated the impact of glucose metabolism on aging quality (maintained locomotory capacity and median lifespan) and found that, in addition to shortening lifespan... Читать дальше...

Новости России
Москва

Сергей Лёвкин: в Градостроительном комплексе открыли набор на целевое обучение


Functional information from clinically-derived drug resistant forms of the Candida glabrata Pdr1 transcription factor

Plos.org 

by Lucia Simonicova, W. Scott Moye-Rowley

Azole drugs are the most frequently used antifungal agents. The pathogenic yeast Candida glabrata acquires resistance to azole drugs via single amino acid substitution mutations eliciting a gain-of-function (GOF) hyperactive phenotype in the Pdr1 transcription factor. These GOF mutants constitutively drive high transcription of target genes such as the ATP-binding cassette transporter-encoding CDR1 locus. Previous characterization of Pdr1 has demonstrated... Читать дальше...

Firing rate homeostasis counteracts changes in stability of recurrent neural networks caused by synapse loss in Alzheimer’s disease

Plos.org 

by Claudia Bachmann, Tom Tetzlaff, Renato Duarte, Abigail Morrison

The impairment of cognitive function in Alzheimer’s disease is clearly correlated to synapse loss. However, the mechanisms underlying this correlation are only poorly understood. Here, we investigate how the loss of excitatory synapses in sparsely connected random networks of spiking excitatory and inhibitory neurons alters their dynamical characteristics. Beyond the effects on the activity statistics, we find that the loss... Читать дальше...

Partitioning stable and unstable expression level variation in cell populations: A theoretical framework and its application to the T cell receptor

Plos.org 

by Thiago S. Guzella, Vasco M. Barreto, Jorge Carneiro

Phenotypic variation in the copy number of gene products expressed by cells or tissues has been the focus of intense investigation. To what extent the observed differences in cellular expression levels are persistent or transient is an intriguing question. Here, we develop a quantitative framework that resolves the expression variation into stable and unstable components. The difference between the expression means in two cohorts isolated... Читать дальше...


Спорт в России и мире

Новости спорта


Новости тенниса
Арина Соболенко

«Недальновидное решение». На «Беларусь 1» раскритиковали отказ Арины Соболенко от Олимпиады






Резко стало плохо, и почти сразу умер: Главарь Таганской ОПГ умер в "Матросской тишине"

«Дети перемен» — семейная сага о девяностых с черным юмором выйдет на Wink.ru и START

В России захотели заочно арестовать бывшего топ-менеджера группы ГАЗ из Швеции

Двор в микрорайоне Супонево в Звенигороде комплексно благоустроят летом