The chemical modification of histones is thought to be a form of epigenetic information — information separate from our DNA — that
controls gene regulation.
Research coordinated by Osaka University has now shown that the nuclear protein complex cohesin must be expressed at sufficient levels in the early mouse brain to
control gene regulation and allow development of healthy neuronal networks and behavioral characteristics.
Not exact matches
But a new study, published today in Nature, has revealed that m6A plays a key role in the
regulation of the Sex - lethal (Sxl)
gene, which
controls sex determination of the fruit fly Drosophila.
Although the
regulation of this
gene has a strong «cell cycle
control» component, I was more interested in studying cell cycle
regulation «proper.»
The newly unmasked
genes play a role in three distinctively different bodily functions, including systems that
control inflammation and cholesterol and the
regulation of how brain cells clean up toxic proteins.
One aspect of
gene regulation involves enzymes placing chemical tags or modifications on histone proteins — which
control a cell's access to the DNA sequences that make up a
gene.
«Although we know that ZMYND11
controls RNA polymerase II travel ratio in the
gene body, we still don't know how this protein, which does not physically interact with polymerase II, actually achieves this
regulation,» Shi said.
Analysis of the tumor
genes affected by the two drugs revealed that cabazitaxel had a greater effect on cellular division and
regulation of chromatin — a spool for DNA that helps
control which
genes are in use and when — whereas docetaxel has a greater impact on DNA transcription and repair.
The fact that a thousand proteins are involved in epigenetic
regulation is pretty astounding, because that's just a
genes wrapped up in
controlling genes.
This complex process of
controlling the production of proteins is known as
gene regulation.
Molecular recognition is fundamental to transcriptional
regulation, the primary mechanism by which cells
control gene expression.
More importantly, Choudhury and colleagues found that DAZAP1 directly links the
regulation of
gene splicing with the MAP kinase pathway — a key signaling pathway that
controls cell proliferation.
The modern study of
gene regulation started in the 1950s, but researchers only started to unravel the complex array of histone modifications that fine - tune chromatin
control of
gene expression 20 years ago.
A new study involving roundworms appears to have isolated one
gene — a transcriptional factor (or
gene that
controls the
regulation of other
genes in the genome)-- that appears to be an essential member of the pathway that translates reduced caloric intake into a longer life span.
Chromatin is the protein packaging that helps regulate genome function by
controlling access to DNA; changes in this packaging can affect
gene regulation.
Previously, longevity researchers believed dietary restriction was regulated via an insulin - signaling pathway, where the levels of the nutrient - sensing hormone would fall in response to lowered food intake, activating a DNA - binding protein called daf - 16 that would then confer longevity through the
regulation of
genes under its
control.
«How good bacteria
control your
genes: Chemical signals from gut bacteria influence
gene regulation in the gut lining.»
In addition to reevaluating how histones
control gene activation, the study also reports a new mechanism of PARP1
regulation.
Scientists at the Centre for Genomic
Regulation (CRG) in Barcelona, Spain, have developed a new technique to crack the underlying DNA code for the «
control dials» that determine levels of
gene activity in bacteria.
Scientists have discovered many points of
regulation in the process of using a specific DNA template to make a protein, known as
gene expression, that allow the cell to
control how much of a certain protein is made at a certain time.
One is straightforward — during development, cells are assuming their identities and need precise
control over protein production, so cells lacking a
gene expression
regulation mechanism are bound to have defects, particularly in the case of specialized cells like neurons.
The regulatory system to
control redox balance involves sugar - dependent
gene regulation and protein phosphorylation.
Christopher Hammell Post-transcriptional
gene regulation;
control of animal developmental timing; RNA biology
Figure 5: The
regulation of some
genes differs between the wing (left) and haltere (right) imaginal discs of Drosophila and is under the
control of the Ultrabithorax Hox
gene.
Major Symposium A: Transcriptional
Control of Immunity: Diverse Regulatory Mechanisms in
Gene Regulation Chairs: Amy S. Weinmann, Univ. of Alabama, Birmingham Boris Reizis, New York Univ..
Fold change of
genes identified for
regulation of skeletal extension and growth, is presented as treated vs.
control during daytime, night - time and without treatment.
BR homeostasis is
controlled through transcriptional feedback
regulation of these biosynthetic
genes by known BR signaling TFs, BRASSINAZOLE RESISTANT1 (BZR1) and BRI1 - EMS - SUPPRESSOR1 (BES1) / BZR2.
This could be an indication of a
controlled expression of
genes responsible for calcification during daytime, as evidenced by the up -
regulation of
genes associated with the cartilage and bone biogenesis process.
The work has led him to explore the role of protein phosphorylation in a diverse array of cellular functions, including transformation, cell communication, cell adhesion, cell - cycle
regulation, the
control of
gene expression, and protein degradation.
Now that scientists understand how these
genes control the heart, they can begin to piece together how heart disease disrupts this
regulation.
Transcriptional
Control /
Gene Regulation Identification and characterization of injury and regeneration - responsive endocardial enhancer elements Brian Black, University of California, San Francisco Untangling the regulatory pathways
controlling vascular differentiation Sarah De Val, Oxford University
Researchers have identified a host of factors involved in epigenetic
control of
gene expression and development, but many of the precise mechanisms underlying this type of
regulation remain unclear.
Post-transcriptional
regulation is the
control of protein synthesis by
genes after RNA synthesis has begun.
Once again, the
genes that are subject to HAR2
regulation are still unclear, although GBX2, a transcription factor that
controls proper expression of
genes involved in embryo morphogenesis, is one promising candidate.
Like in the Wnt signaling pathway, ligands bind to the EGFR on the cell surface and initiate a cascade of events in the cell that in this case lead to
regulation of
genes that
control cell cycle progression.
In China, where
regulations on
gene editing are less tightly
controlled, there are already several CRISPR clinical trials underway.
However, at present, little is known about the
regulation control of RIG - G
gene expression.
A comprehensive study of
gene expression in tomato fruits will explore unanswered questions about
gene regulation, hormonal
control and structural polymers that make up cell walls in fruits, to improve crop quality and yields.
In young animals, immunological activation drives a conserved transcriptomic switch, resulting in tightly
controlled gene expression characterized by a strong up -
regulation of a core activation program, coupled with a decrease in cell - to - cell variability.
Whole genome expression data of livers of wildtype and PPARα − / − mice fasted for 24 h served as positive
control for PPARα - dependent
gene regulation.
Importantly, there is a clear signature of the parents» sensitivity to high CO2 in the molecular phenotype of the offspring expressed by the differential
regulation of
genes controlling the circadian rhythm indicating adaptive potential through natural standing variation.
The 50 down - regulated
genes with significant (p - value ≤ 0.05) and greater than 2-fold level of down -
regulation in IDUA - / - canine arteries, compared to
controls.
Here's what you get during those minutes, according to new reports: an instant endorphin surge and drop in blood pressure,
regulation of hunger hormones that may help you keep weight off, and key vitamin D synthesis that alters the expression of 291
genes responsible for everything from
controlling how quickly your bones age to how fast you bounce back from tough workouts to how fertile you are.