Results 71 to 80 of about 6,050,843 (300)

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

Content Features of the Art Curriculum in Lower Secondary Education [PDF]

open access: yesرویکردهای نوین آموزشی
The present research aimed to identify the content features of the art curriculum for the first period of secondary education, using a mixed-methods approach (qualitative-quantitative).
Mojdeh Mahfar   +2 more
doaj   +1 more source

Optimal Random Access and Random Spectrum Sensing for an Energy Harvesting Cognitive Radio [PDF]

open access: yes, 2012
We consider a secondary user with energy harvesting capability. We design access schemes for the secondary user which incorporate random spectrum sensing and random access, and which make use of the primary automatic repeat request (ARQ) feedback.
Shafie, Ahmed El, Sultan, Ahmed
core  

Lower gastrointestinal bleeding secondary to a rectal leiomyoma

open access: yesWorld Journal of Gastroenterology, 2009
The occurrence of leiomyoma of the rectum is uncommon. Most of these lesions are clinically silent and are found incidentally during laparotomy or endoscopic procedures for unrelated conditions. Symptomatic leiomyomas of the rectum are encountered less frequently, with only sporadic reports in the literature.
DE PALMA, GIOVANNI DOMENICO   +9 more
openaire   +4 more sources

Cell wall target fragment discovery using a low‐cost, minimal fragment library

open access: yesFEBS Letters, EarlyView.
LoCoFrag100 is a fragment library made up of 100 different compounds. Similarity between the fragments is minimized and 10 different fragments are mixed into a single cocktail, which is soaked to protein crystals. These crystals are analysed by X‐ray crystallography, revealing the binding modes of the bound fragment ligands.
Kaizhou Yan   +5 more
wiley   +1 more source

Evaluation of the concentration of minerals and heavy metals in some medicinal plants and the safety of their consumption

open access: yesEQA
Besides their therapeutic value, medicinal plants can also contain varying levels of minerals and heavy metals, affecting the quality and safety for use. This could affect how safe and of what quality they are when taken by humans.
Liridon Buqaj   +2 more
doaj   +1 more source

The Socioeconomic Gap in University Dropouts [PDF]

open access: yes, 2009
In many countries, including the U.S. and the U.K., there is ongoing concern about the extent to which young people from lower-income backgrounds can acquire a university degree. Recent evidence from the U.K.
Powdthavee, Nattavuudh, Vignoles, Anna
core   +2 more sources

Structural biology of ferritin nanocages

open access: yesFEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

High Resolution Spectroscopy during Eclipse of the Young Substellar Eclipsing Binary 2MASS 0535-0546. I. Primary Spectrum: Cool Spots versus Opacity Uncertainties

open access: yes, 2010
We present high-resolution Keck optical spectra of the very young substellar eclipsing binary 2MASS J05352184-0546085, obtained during eclipse of the lower-mass (secondary) brown dwarf.
Allard   +25 more
core   +1 more source

Organ‐specific redox imbalances in spinal muscular atrophy mice are partially rescued by SMN antisense oligonucleotides

open access: yesFEBS Letters, EarlyView.
We identified a systemic, progressive loss of protein S‐glutathionylation—detected by nonreducing western blotting—alongside dysregulation of glutathione‐cycle enzymes in both neuronal and peripheral tissues of Taiwanese SMA mice. These alterations were partially rescued by SMN antisense oligonucleotide therapy, revealing persistent redox imbalance as ...
Sofia Vrettou, Brunhilde Wirth
wiley   +1 more source

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