Results 81 to 90 of about 17,748,027 (382)

Real‐time assay of ribonucleotide reductase activity with a fluorescent RNA aptamer

open access: yesFEBS Letters, EarlyView.
Ribonucleotide reductases (RNR) synthesize DNA building blocks de novo, making them crucial in DNA replication and drug targeting. FLARE introduces the first single‐tube real‐time coupled RNR assay, which enables isothermal tracking of RNR activity at nanomolar enzyme levels and allows the reconstruction of allosteric regulatory patterns and rapid ...
Jacopo De Capitani   +4 more
wiley   +1 more source

Substrate specificity of Burkholderia pseudomallei multidrug transporters is influenced by the hydrophilic patch in the substrate‐binding pocket

open access: yesFEBS Letters, EarlyView.
Multidrug transporters BpeB and BpeF from the Gram‐negative pathogen Burkholderia pseudomallei have a hydrophilic patch in their substrate‐binding pocket. Drug susceptibility tests and growth curve analyses using an Escherichia coli recombinant expression system revealed that the hydrophilic patches of BpeB and BpeF are involved in the substrate ...
Ui Okada, Satoshi Murakami
wiley   +1 more source

Rusalies: The Testimony of Byzantine Tradition

open access: yesВестник Волгоградского государственного университета. Серия 4. История, регионоведение, международные отношения, 2014
The festival of rusalies is one of the paganism relics in the medieval Byzantium. It was the subject of numerous special studies, where Byzantine traditions unfortunately recede to the background. The modern scientific summaries disregard the information
VIN Yu.Ya.
doaj  

Time after time – circadian clocks through the lens of oscillator theory

open access: yesFEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo   +2 more
wiley   +1 more source

ASTRONAUT SELECTION AND POTENTIAL RISK MANAGEMENT: PSYCHOLOGICAL TRAUMA AND RESILIENCE FOR MARS SPACE MISSION [PDF]

open access: yesTrames
The first human orbited the Earth for less than two hours in 1961. The twelve Apollo astronauts experienced up to 22 hours of walking on the Moon (Apollo 17).
David W. Kim
doaj   +1 more source

An upstream open reading frame regulates expression of the mitochondrial protein Slm35 and mitophagy flux

open access: yesFEBS 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

The production of ideas: Notes on Austrian intellectual history from Bolzano to Wittgenstein [PDF]

open access: yes, 1981
This paper takes the form of a series of sketches of 19th century Austrian political and intellectual history, allied with a number of more general reflections designed to contribute to our understanding of some of the peculiar characteristics of ...
Smith, Barry
core  

Sequence determinants of RNA G‐quadruplex unfolding by Arg‐rich regions

open access: yesFEBS 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

MUNZUR DAĞLARI ALT MİYOSEN ÇÖKELLERİ MOLLUSK TOPLULUĞU VE PALEOEKOLOJİSİ (DOĞU ANADOLU, TÜRKİYE)

open access: yesBulletin of the Mineral Research and Exploration, 2017
Araştırma konusu, Tunceli ili Ovacık ilçesinde yer alan Munzur Dağlarında yüzlek veren Miyosen yaşlı birimlerdir. Munzur Dağlarında Paleozoik’ten Senozoik’e kadar devam eden bir çökelim bulunmaktadır.
Müjde GÜRSOY
doaj   +1 more source

1. Introduction

open access: yes, 1958
Vastly increased research and a sounder technique in history in the nineteenth century had two influences on the social sciences. When an enthusiasm for the records of history was combined with the evolutionary perspective, it often resulted in the ...
Bloom, Robert L.   +6 more
core  

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