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Tag: "bud" at biology news

Hirsute Or Hairless? Two Proteins May Spell The Difference

...initiate the cell-to-cell “crosstalk?that controls bud formation by first directing a small cluster of ep...ional and behavioral properties in cells that spur bud formation. In previous experiments, Fuchs and colleagues showed that reducing expression of E-cadhe...

Cats' indifference towards sugar explained

...attered on mammalian tongues are specialized taste bud receptors that recognize specific tastes, including, of course, sweet. Two different proteins hook together to make each sweet receptor. According to Brand, Xia Li (lead author of the study), and their coauthors, cats do not produce one of the protei...

Bitter or sweet? The same taste bud can tell the difference

...eet and bitter tastes may reside in the same taste bud cells, a new study reports. The study explains th...cal messenger called neuropeptide Y (NPY) in taste bud cells. Though researchers have long known that NPY is active in the brain and gut, this is the first...

Molecular mechanism of feather formation found

... the same levels of Bmp2 and Shh grow from a small bud to form a uniform ring. Shh then is expressed in specific spots along the ring, giving rise to bumps, seen microscopically as longitudinal stripes demarcating the edges of ridges in the developing barb. "Each barb ridge grows in length by recruiting...

A new link between stem cells and tumors

...Prospero and other proteins, in the area that will bud off and become the specialized cell. "This asymmetry provides the new cell with molecules it needs to launch new genetic programs that tell it what to become," says Cayetano Gonz�lez, whose group began the project at EMBL and has continued the work ...

Cholesterol gets 'thumbs up' for role in digit development

...the protein spread out more evenly across the limb bud (a weaker gradient) in mice lacking cholesterol-mo...esis, all the way to the anterior part of the limb bud where it is normally never detected,"Chiang explained. When Sonic hedgehog travels to tissue where i...

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

...ar to give rise to centrosomes. Accessory nuclei bud off from the membrane of the nucleus, the cellular structure that contains the chromosomes. By the time the egg is fully developed, it contains several hundred accessory nuclei that look much like the nucleus except that they don't contain chromosome...

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

...ar to give rise to centrosomes. Accessory nuclei bud off from the membrane of the nucleus, the cellular structure that contains the chromosomes. By the time the egg is fully developed, it contains several hundred accessory nuclei that look much like the nucleus except that they don't contain chromosome...

Genetic snooze button governs timing of spring flowers

...at repress flowering. Another processes known as bud dormancy, which is similar to vernalization, occur...cold-regulated processes such as the regulation of bud dormancy in trees. Bud dormancy may be similar to vernalization or, the Wisconsin scientists adds, ...

Scientists solve sour taste proteins

... taste of monosodium glutamate or MSG). Each taste bud on the tongue contains separate, distinct subsets of cells that specifically detect each taste -- sweet cells respond to sweet substances, bitter cells to bitter substances, and so on. Taste receptors, proteins on the surface of these cells, are resp...

Trials for new drug to overcome HIV

...rotects the RNA heart of the HIV particles as they bud out from infected cells. The latest research, in which the virus was examined under a microscope, shows that the drug binds to the capsid protein at acrucial stage in its manufacture (Journal of Virology, vol 80, p 5716). Normally, the capsid protei...

Scientists discover that ancient genes dictate flowering, fall bud set

...s, but also controls seasonal growth cessation and bud set," said Nilsson, the corresponding author of th...the genetics that signal fall growth cessation and bud set in trees. They discovered that CO accumulates in response to long days and initiates the formati...

Important gene controlling tree growth and development found

... the timing of when the trees stop growing and set bud in the fall. That the same gene was involved in al...length the tree responds with growth cessation and bud set. The further north the trees grow the more important it is to stop growing and form buds suffici...

Embryonic patterning makes the feathers fly

...ll reflecting varying degrees of inhibited feather bud segregation. Stripes, for example, increased with ...y inhibition. In the controls, rudimentary feather bud epithelia emerge by cell rearrangements and coordinated cell shape elongation. In inhibitor-treated ...

Scientists explore how complex organs develop from a simple bud

...the complete process of organogenesis –from simple bud to complex organ. The reviews in this special issue of Differentiation are written by top scientists offering fresh ideas and pertinent background information to readers interested in anything from molecular to cellular and developmental biology. ...

Gene key to taste bud development identified

...ifferentiate into specialized nerve cells. Taste bud cells, much like skin cells, continually slough off and are replaced by new ones. So the new findings not only provide insights into the interactions between SOX2 and tongue stem cells during embryonic development, but also into how stem cells contin...

World's largest flower evolved from family of much tinier blooms

...st flower -- typically a full meter across, with a bud the size of a basketball -- evolved from a family of plants whose blossoms are nearly all tiny, botanists write this week in the journal Science. Their genetic analysis of rafflesia reveals that it is closely related to a family that includes poinset...

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