Results 71 to 80 of about 1,830,879 (269)
South African Journal of Radiology, 2013 Background: The aim of this retrospective study was to assess the contribution of multimodal MRI techniques, specifically perfusion-weighted imaging (PWI), and/or MR spectroscopy (MRS), in increasing the diagnostic accuracy of MRI in brain tumours ...
Kasim Abul-Kasim +3 more
doaj +1 more source
FEBS Letters, EarlyView.This perspective highlights emerging insights into how the circadian transcription factor CLOCK:BMAL1 regulates chromatin architecture, cooperates with other transcription factors, and coordinates enhancer dynamics. We propose an updated framework for how circadian transcription factors operate within dynamic and multifactorial chromatin landscapes ...
Xinyu Y. Nie, Jerome S. Menet
wiley +1 more source
Frontiers in Microbiology, 2018 The freshwater cyanobacterium Microcystis aeruginosa frequently forms toxic massive blooms and exists in an arms race with its infectious phages in aquatic natural environments, and as a result, has evolved extremely diverse and elaborate antiviral ...
Shigeko Kimura +6 more
doaj +1 more source
Fecal microbial composition and functional diversity of Wuzhishan pigs at different growth stages
AMB Express, 2021 The mammalian gut microbiome participates in almost all life processes in the host. In addition to diet, the breed is the main factor affecting changes in the swine gut microbiota.
Mingying Shao +4 more
doaj +1 more source
, 2018 Every conditionally convergent series of real numbers has a divergent subseries. How many subsets of the natural numbers are needed so that every conditionally convergent series diverges on the subseries corresponding to one of these sets?
Brendle, Jörg +2 more
core +1 more source
Disordered but rhythmic—the role of intrinsic protein disorder in eukaryotic circadian timing
FEBS Letters, EarlyView.Unstructured domains known as intrinsically disordered regions (IDRs) are present in nearly every part of the eukaryotic core circadian oscillator. IDRs enable many diverse inter‐ and intramolecular interactions that support clock function. IDR conformations are highly tunable by post‐translational modifications and environmental conditions, which ...
Emery T. Usher, Jacqueline F. Pelham
wiley +1 more source
BioTechniques, 2002 We investigated the ability of an amphipathic oligopeptide to carry a synthetic ds- DNA oligonucleotide inside human cells. The oligonucleotide was designed as a decoy binding site for the transcriptional activator of the methylguanine-DNA ...
L. Citti +5 more
doaj +1 more source
Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation
FEBS Letters, EarlyView.Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe +3 more
wiley +1 more source
Telomere length correlations among somatic tissues in adult zebra finches. [PDF]
PLoS ONE, 2013 Telomeres are repetitive non coding DNA sequences located at the end of eukaryotic chromosomes, which maintain the integrity of the genome by hiding the chromosome ends from being recognised as double stranded breaks. Telomeres are emerging as biomarkers
Sophie Reichert +4 more
doaj +1 more source
A new application of quasi power increasing sequences
Publicationes mathematicae (Debrecen), 2001 The aim of this note is to extend a theorem of H. Bor [2], which utilizes the concept of almost increasing sequences, to the class of quasi β-power increasing sequences 0 < β < 1, which is a wider class of sequences, and no additional assumption will be ...
L. Leindler
semanticscholar +1 more source