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Tag: "apparatus" at biology news

Genome of deadly amoeba shows surprising complexity, evidence of lateral gene transfer

...ryotic cells (such as endoplasmic reticulum, golgi apparatus and mitochondria) and also shared some bacteria-like traits. While the Nature study catalogs a reduced genome (sometimes characteristic of an organism's transition to a parasitic lifestyle), Loftus says scientists found ample evidence of a variety o...

Researchers Uncover Key Step In Manufacture of Memory Protein

... an electric wall outlet, Dr. Loh said. The golgi apparatus then encases the lipid rafts ?along with proBDNF ?in bubble-like structures known as vesicles. Within these vesicles, proBDNF is converted to mBDNF by other enzymes. The vesicles are then transported to the cell’s outer membrane, where they remain un...

Needling Chromosomes Reveals Cell Division Secret

...ogether, becauseotherwise they don’t attach to the apparatus called the spindle thatdistributes them to opposit...tructures around them. Also, the micromanipulation apparatus isarranged such that your view is up through the bottom of the cell, andthe needles are coming down ...

A probe, not an echo

... with greater clarity and resolution. A hand-held apparatus cannot objectively locate objects in 3D space (in a fixed-coordinate system), but only allows the user to subjectively observe where an object is in relation to other observable structures. Therefore, it is operator-dependent. The HUTT system transm...

HIV inserts into human genome using a DNA-associated protein

...es that finding that LEDGF is part of the cellular apparatus necessary for HIV replication is important to the field of gene therapy. Controlling where gene-therapy vehicles insert in the human genome could help make the delivery of new therapeutic sequences safer. The new findings about LEDGF suggest that eng...

Sleeping sickness parasite shows how cells divide their insides

...sal body, involved in the duplication of the Golgi apparatus and defined by a highly-conserved protein, Centrin2. This structure has two lobes -- one at the old Golgi, the other where the new Golgi forms. Once a new Golgi has grown, the Centrin structure itself duplicates so that two complete structures, and a...

How the neuron sprouts its branches

...d by The National Institutes of Health. The Golgi apparatus is a cellular warehouse responsible for receiving,...gs, researchers believed that only a central Golgi apparatus played a role in such distribution, said Ehlers. "In most mammalian cells, the Golgi has a very ste...

Insects that produce males from unfertilized eggs reveal a surprising cellular feat

...osomes help orchestrate cell division, building an apparatus of microtubules called the mitotic spindle, which pulls apart the duplicated chromosomes so that each of the two daughter cells gets a complete set of chromosomes. The centrosome contains about a hundred different proteins, including the main protein...

Researchers now able to look deep into heart to view triggers of a heart's beat

...osomes help orchestrate cell division, building an apparatus of microtubules called the mitotic spindle, which pulls apart the duplicated chromosomes so that each of the two daughter cells gets a complete set of chromosomes. The centrosome contains about a hundred different proteins, including the main protein...

Lizard 'third eye' sheds light on evolution of color vision

...present a "missing link" between the light-sensing apparatus in lower animals and ours. It turns out that some frogs and fish also have a spot on their foreheads that might play the role of a light-sensing third eye. Yau hopes to pursue these structures to obtain more clues about how our photoreceptor cells,...

Parkinson's disease mechanism discovered

...m is the site of protein production, and the Golgi apparatus is the cell's "post office," which modifies, sorts and adds the molecular addresses that designate the specific destinations in the cell where proteins are needed. Lindquist and her colleagues had conducted a genetic screen in yeast to discover gene...

Small molecule interactions were central to the origin of life

...ic" syntheses carried out by chemists using modern apparatus and purified reagents, are highly unlikely. The creation of a molecule that can self-replicate requires the combination of diverse chemicals in a long sequence of reactions in a specific order, interspersed by complicated separations, purifications, ...

One-dimensional diffusion accelerates molecular motors

...ell growth. When cells divide, they build a giant apparatus - the so called the "mitotic spindle". It is made up of microtubules; which are tiny protein polymers that can be built up and torn down like scaffolding. They also make up "tracks", along which motor proteins pull the halves of chromosomes into exis...

Vaccine-producing 'plant-factories'

...ected to other parts of the cell such as the Golgi apparatus and the plasmatic membrane, etcetera, but not to the chloroplast....

U of M researchers invent 'flashy' new process to turn soy oil, glucose into hydrogen

...ary 2004, when a team he headed invented a similar apparatus to produce hydrogen from ethanol. ...

Williams College biologist explores photosynthetic apparatus

...ture, function and evolution of the photosynthetic apparatus in one of the most important marine primary produc...s encoding proteins associated with the biological apparatus crucial to photosynthesis and proteins that are critical in the acclimation response to specific env...

A new study of living cells could revolutionize the way we test drugs

...tivity, Andre Geim and fellow researchers modified apparatus used originally to detect weak magnetic fields in superconductors*. Unfortunately, these modifications reduced the sensitivity of the technique, and the normal activity of the yeast cell could not be detected. This is the first time such a technique ...

When your brain talks, your muscles don't always listen

...ing to Knight's research. Using an experimental apparatus he and his students created in UD's Human Performance Lab, Knight has been examining muscular force on a very small scale in the index finger, specifically, the first dorsal interosseous muscle. Located between the index finger and the thumb, this mu...

Surprising origin of cell's internal highways

...erina, Ph.D., and colleagues report that the Golgi apparatus -- a stack of pancake-shaped compartments that sor...e true origins of these structures. "The Golgi apparatus is very close to the centrosome," said Kaverina. "So if you're not looking at it precisely, it is ha...

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