Tucked away
inside cell membranes, a molecular butcher does the bidding of healthy cells but also of disease agents.
All organisms alive today keep their DNA, RNA, and proteins together
inside cell membranes.
Most microbes conduct electron transactions deep in their own recesses, where the enzymes are; as a consequence, the organisms tend to seek out soluble electron receptors like oxygen that can slip
inside the cell membrane, nab electrons, and slip out again.
The «rotation model» Ligand binding to the extracellular part of the receptor induces rotation of the receptor's transmembrane region
inside the cell membrane, and in doing so, regulates its activity inside the cell.
Is incorporated
inside a cell membrane?
Not exact matches
While cold air can stop tomatoes from ripening — a good thing if you want to keep them around for longer — refrigeration also breaks down
cell membranes inside the fruit, diminishing its flavor and texture.
These
cells consisted of a fatty
cell membrane, like a balloon skin, with DNA / RNA, proteins, fats and carbohydrates on the
inside.
The mitochondria are located in the cytosol of the
cells, outside of the
cell nucleus; the
cell's DNA genome is located
inside the nuclear
membrane.
About 60 percent of the
cells returned to Earth with their
cell membranes intact and the DNA
inside still stable.
Analysis showed that within the moss protonema
cells, more that 85 % of the lead had accumulated in the
cell walls, with smaller amounts being found in organelle
membranes and
inside the chloroplasts where photosynthesis occurs.
«Lipids play a vital role in cellular function, because they form the
membranes that surround each
cell and many of the structures
inside of it,» Quinlivan said.
These receptors are found in the
cell membrane and handle the communication between the outside and the
inside.
Those
cells naturally bud off exosomes — tiny bubbles made of
cell membrane — that carry the virus
inside them.
At some point, Martin speculates, the bacterium gave the archaean a gene for
membrane synthesis, leading to a bubbling up of
membrane within the host
cell, something like what happens when modern eukaryotes divide and then reform their nucleus from
membrane pieces grown
inside them.
To avoid death,
cells must remove fluoride that has accumulated
inside them, a process accomplished via ion channels - protein tunnels through the
cell membrane that only allow specific substances to pass through.
A team led by Carnegie's Wolf Frommer has revealed how
membrane proteins were networked with each other and with the signaling proteins
inside the
cell.
In healthy
cell membranes, phospholipids called phosphatidylserine (PS) and phosphatidylethanolamine (PE) are located in the inner
membrane leaflet facing the
inside of the
cell.
And the first thing that begins to happen is carbon dioxide builds up
inside the body, and with it there is a rise in acidity; that acidity rise contributes to cellular
membranes decaying and then collapsing and then digestive enzymes that were already always present in the
cells begin to slosh around to the body and [it] begins a state of what's called self digestion, so the body begins to liquefy
inside rather literally.
And it would allow scientists to deliver proteins that act
inside cells or span their
membranes, which are a challenge to introduce from the outside.
When a
cell membrane is punctured, it induces a current between the
inside and outside of the
cell.
In one, researchers working with mice at the Institute of Molecular and Cellular Biology in Singapore used antibodies to target proteins
inside cancer
cells — an impressive feat, since the antibodies were long considered too large to cross the cancer
cell's outer
membrane.
The authors observed that once proteins get
inside the
cell, they enter vesicles (small compartments that are encased in
membranes).
Inside the reactor, the
cell - and - chemical mixture is surrounded on three sides by polycarbonate; on the fourth side is a flexible and gas - permeable silicone rubber
membrane.
Ordinarily, malaria - causing parasites seal themselves behind two
membranes inside red blood
cells of infected people.
This difference makes getting into
cells more difficult: Whereas
membrane - clad viruses can fuse their
membrane with the
cell, much like two soap bubbles merging, SV40 needs to find another way
inside.
Thus they can damage a
cell's
membrane or the
membranes of various
cell structures that exist
inside the cytoplasm of
cells.
Once
inside, the proteins fold into their proper shape and are shuttled to the
cell membrane for release.
Many people think of
cells as watery balloons — fluid encased in a
membrane sheath with organelles floating around
inside.
As a result, a small portion of the
membrane will then invaginate and ultimately pinch off to produce a vesicle
inside the
cell.
When enough of the organisms gather together in a confined space, the compound becomes so concentrated that it permeates back through the
cell membranes to combine with receptors
inside the bacteria.
The plasma
membrane works between the machinery on the
inside of the
cell and the outside fluid that bathes the
cells.
The researchers created antibodies to bind specifically to the reflectin proteins, which revealed that the reflectins are located exclusively
inside the lamellae formed by the folds in the
cell membrane.
Like all steroid hormones, estrogens readily diffuse across the
cell membrane;
inside the
cell, they interact with estrogen receptors.
The mutation occurs in the gene ACVR1, and this gene produces a protein that is a receptor that spans the
cell membrane — so part of the receptor is outside of the
cell, and part is on the
inside.
Membrane ruffles surround and engulf extracellular fluid (top panels), creating the spherical intracellular vacuoles seen
inside the
cell (bottom panels).
For the first time, scientists have demonstrated a simple charge - based mechanism for regulating the formation and dissolution of liquid - like structures that lack outer
membranes inside cells.
Palmitate allows these proteins to transfer chemical signals from outside the
cell to
inside via the
cell membrane.
In their latest research, Lawrence Rajendran, of the University of Zurich in Switzerland, and his colleagues discovered that, unlike non-amyloid proteins, the Alzheimer's - associated amyloid precursor protein is cleaved by β - secretase in
membrane - bound compartments
inside cells, called endosomes.
Auxin pumps, green in these images, are normally nestled in plant
cell membranes (left) but accumulated
insides the
cells when blocked by an inhibitor (right).
In addition, we have devised an «optical tweezers» that uses laser beams to hold and move organelles
inside of
cells without puncturing the intervening
membranes.
They hope to design peptides that can permeate
cell membranes and go
inside living
cells.
Exosomes form
inside cell compartments and release outside the
cell when these compartments fuse with the
cell's surrounding
membrane.
The result could be useful for understanding the movement of water when squeezed
inside tiny channels, for instance, in carbon nanotubes or
cell membranes.
Dystrophin is responsible for linking the
cell membrane to contractile proteins such as actin and allows the contraction force
inside cells to be transmitted to the outside.
The outermost layer of our skin is composed of dead squamous epithelial
cells, as are the mucous
membranes lining the
inside of mouths and body cavities
These signals control actin fibers, the
cell's muscles: The fibers bend the
cell envelope from
inside and form
membrane bubbles into which the bacteria are absorbed.
I studied the process called signal transduction - transmission of the activating mechanical signal from outside the
cell, across the cellular
membrane, to FAK
inside the
cell, leading to the activation of the kinase.
Using zymonic acid it is furthermore possible to specifically investigate the pH value outside of the
cell membrane: With other biosensors it is often not clear whether measured changes take place
inside or outside of the
cell (intracellular or extracellular).
Eukaryotic
cells enclose their elements, or organelles,
inside a
membrane.
A bacterium consists of an outer wrapper called the
cell membrane, and
inside the
membrane is a watery fluid called the cytoplasm.