Results 91 to 100 of about 797,090 (316)

Divergent roles of CprK paralogues from Desulfitobacterium hafniense in activating gene expression [PDF]

open access: yes, 2008
Gene duplication and horizontal gene transfer play an important role in the evolution of prokaryotic genomes. We have investigated the role of three CprK paralogues from the cAMP receptor protein-fumarate and nitrate reduction regulator (CRP-FNR) family ...
Vos, W.M., de   +4 more
core   +1 more source

GATA4 Forms a Positive Feedback Loop with CDX2 to Transactivate MUC2 in Bile Acids-Induced Gastric Intestinal Metaplasia

open access: yesGut and Liver
Background/Aims: Gastric intestinal metaplasia (GIM), a common precancerous lesion of gastric cancer, can be caused by bile acid reflux. GATA binding protein 4 (GATA4) is an intestinal transcription factor involved in the progression of gastric cancer ...
Xiaofang Yang   +7 more
doaj   +1 more source

Microbiome−host proteostasis crosstalk—An emerging perspective on mechanisms and interventions toward healthy longevity

open access: yesFEBS Letters, EarlyView.
Proteostasis and the gut microbiota play a key role in shaping host physiology. Microbiota‐derived metabolites, vitamins, and RNA modulate host proteostasis. Findings from model systems, including C. elegans, indicate microbes can either stabilize or disrupt host proteostasis.
Abhishek Anil Dubey, Maria Ermolaeva
wiley   +1 more source

Mechanism of PAX3-FKHR in transcriptional regulation [PDF]

open access: yes, 2009
[[abstract]]The PAX3-FKHR fusion protein is formed as a result of t(2;13) chromosomal translocations and functions as a transcription factor to activate transcription.
Ching-Yi Lin
core  

Characterization of Schnurri : an integral component of the Dpp-signaling pathway in "Drosophila melanogaster" [PDF]

open access: yes, 2004
Signaling by the transforming growth factor-β (TGF-β) family of ligands plays a crucial role during development and tissue homeostasis in all multicellular organisms. The signal transduction pathway is highly conserved and relatively simple.
Hartmann, Britta
core   +1 more source

Chromatin insulation by a transcriptional activator [PDF]

open access: yesProceedings of the National Academy of Sciences, 2003
In eukaryotic genomes, transcriptionally active regions are interspersed with silent chromatin that may repress genes in its vicinity. Chromatin insulators are elements that can shield a locus from repressive effects of flanking chromatin. Few such elements have been characterized in higher eukaryotes, but transcriptional activating elements are an ...
Nathan B, Sutter   +4 more
openaire   +2 more sources

From mice to humans—divergent strategies for intestinal homeostasis and regeneration

open access: yesFEBS Letters, EarlyView.
Recent advances such as organoid genome editing, xenotransplantation, imaging, and whole‐genome sequencing have enabled direct studies of human intestinal stem cells (ISCs). These studies reveal species‐specific features, including slower ISC proliferation, distinct injury responses, slower somatic mutation accumulation in humans, and an inverse ...
Keiko Ishikawa   +2 more
wiley   +1 more source

Positive Autoregulation of an Acyl-Homoserine Lactone Quorum-Sensing Circuit Synchronizes the Population Response

open access: yesmBio, 2017
Many proteobacteria utilize acyl-homoserine lactone quorum-sensing signals. At low population densities, cells produce a basal level of signal, and when sufficient signal has accumulated in the surrounding environment, it binds to its receptor, and ...
Rebecca L. Scholz, E. Peter Greenberg
doaj   +1 more source

Phosphoinositides and inositol phosphates as molecular glues

open access: yesFEBS Letters, EarlyView.
Inositol phosphates (IPs) and phosphoinositides (PIPs) regulate diverse eukaryotic processes. Beyond recruiting signaling proteins or acting as structural cofactors, recent studies suggest they mediate protein–protein interactions as natural molecular glues.
Aleshia Seaton‐Terry   +9 more
wiley   +1 more source

A role for SUMO modification in transcriptional repression and activation [PDF]

open access: yes, 2007
Since the discovery of the SUMO (small ubiquitin-related modifier) family of proteins just over a decade ago, a plethora of substrates have been uncovered including many regulators of transcription.
Lyst, M J, Stancheva, I
core   +1 more source

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