Tag: "enzymes" at biology news
Scientists Use Gene Therapy To Correct Deafness In Mice
...yme, which we've named Myo15," Camper said. Myosin enzymes
are common in animal cells--especially in muscle cells wherethey convert stored energy into motion making it possible for muscles tocontract and move. "We think Myo15 is a different type of myosin enzyme, whichworks like a tiny bulldozer grabbing pr...
University Of Pittsburgh Scientist Discovers How A Novel Vitamin K Stops Cancer Cell Growth
...d5), causes an imbalance in the normal activity of enzymes
that control theaddition or removal of small molec...ver, Cpd 5 does notinterfere with another group of enzymes
called protein tyrosine-kinases, whichadd phosphate groups to these same proteins. The result is an...
Spinach Enzymes Neutralize Explosives
...onal Laboratory havediscovered that nitroreductase enzymes
found in spinach and other natural compounds can e...to neutralize dangerous explosives. "If we can use enzymes
to clean clothes or to make corn syrup, there's no reason whywecan't use them for destroying explosi...
Molecular "Fossils" Of Early Life
... Ronald R. Breaker, who created the first DNA enzymes
in 1994 withcolleagues at The Scripps Research Ins... and his colleagues cancreate dual-purpose genetic enzymes
in the laboratory out of either RNA or DNA."These genetic enzymes
have the chemical sophistication, ...
A New Molecular Marker For Prostate Cancer
...umors lose expression of p27 through an increasein enzymes
that degrade the p27 protein, and not because of a malfunction in thep27 gene, as is the case with some other common tumor markers like the p53 tumorsuppressor gene. This points to the importance of looking at protein expression-- and not simply gene...
Baker's Yeast Causes Chemical Reactions And Sweet Smelling Labs
...ilar to those used to make bread and beer can make enzymes
needed inexperiments that are nonexplosive, nontox...e resourceandare used by all organic chemists. The enzymes
chemists currently use comefrom inconvenient sources such as human livers and disease-causingbacteri...
Photosynthetic Harvest Inc. Harnesses The Power Of Nature's Chemical Factories
By "Milking" Green Plants For Valuable Natural Products
...e harvested, tissues begin to die, and destructive enzymes
arereleased that break down the compounds that are present. The PHI process allowsplants to secrete compounds outside the plant, away from such destructiveenzymes. Finally, the PHI process is highly reproducible, compared toharvesting material from...
DFG To Set Up 14 New Collaborative Research Centres
...a basis for the specific development of artificial enzymes
or new materials withcustomised properties. Engineering sciences The phenomenon of friction is ubiquitous in technology, from heavy-machine construction tomedical engineering and microtechnology, but so far it has not been possible to describe it i...
Life In Antarctic Ice May Compare To Mars
...e global carbon cycle, creating new antibiotics or enzymes
for industrial usehave raised increasing interest, he said. And the search for life elsewhere in the universe might first besuccessful, he said, when bacteria such as those being identified in Antarcticaare one day found on Mars....
Discovery Of Plant-Like Metabolic Pathway In Common Parasites Supplies New Targets For Therapy
...hich interferes with thesixth of the initial seven enzymes
in the plant-like pathway, inhibits in thetest tub...quenced the genes for one of the shikimate pathway enzymes
from Toxoplasma and a malaria parasite and demonstrated the presence of fourof the seven enzymes
Tiny Molecular Channels Key To Protecting Heart During Attack
...pendent channels withinmitochondria -- the sacs of enzymes
that act as powerhouses of cells -- may playa significant role during "preconditioning," a process in which brief coronaryblood flow stoppages that precede a major heart event protect the heart againstsevere damage. Mitochondria convert carbohydrate...
Pharmacologists Discover Linkage Of Key Cell Switches
...ir studies also showed that the binding of the two enzymes
togetherdid not depend on the catalytic activity, indicating that their connection didnot relate to their acting on each other in their role as enzymes. However,other experiments showed that PP2A did act enzymatically on CaMKIV to remove aphosphate, ...
Crossing Bacterial/Archaeal Boundaries
... for Terrestrial Microbiology, Marburg, discovered enzymes
and coenzymes in a methylotrophic bacterium which ...lism of a methylotrophic bacterium involves genes, enzymes
and coenzymes with surprisingly high identity to some of those involved in the pathway of methanogen...
Shellfish Toxin Study Provides Possible Clue To Cystic Fibrosis Therapy
...nism through an interaction with aspecial class of enzymes
known as protein phosphatases. In the shellfish poisoning, okadaic acid leads to a loss of intestinalsalt and fluid, watery diarrhea, cramps and discomfort. Stephen Shears, Ph.D.,of NIEHS, proposes that a drug be found to use this same mecha...
Studies Suggest Cold Can Protect Valuable Papers
...ides a first glimpse of the extraordinary power of enzymes
ascatalysts." To determine speeds at w...indicates for thefirst time what a magnificent job enzymes
do in speeding up these reactions.These results also indicate the magnitude of the potential sensiti...
Scientists Discover New Players On The Gene-Activation Team
... HAT complexes notonly contain histone acetylation enzymes
but also TAF proteins, which areknown to bind to another very large system of proteins known as TFIID,which is important for telling the RNA polymerase where to start copyinga gene," Workman says. "We've also shown that this binding process requiresa...
Gene-Toxin Link May Shed Light On Cause Of Parkinson's Disease
... CYP 2D6 29B+. This gene activates a series of enzymes
in the liver that metabolize and detoxify chemicals that get into the body. Parkinson's disease is a muscular disorder that causes a person to lose control o...
Vertex Pharmaceuticals/Yale Research Team Uses Gene Knockout Mice To Establish Role Of Caspase-9 In Neuronal Cell Death Pathway
... disease and stroke. Caspases comprise a family of enzymes
that are being evaluated for their role ina number of diseases, based on their involvement in biochemical pathways ofinflammation and of apoptosis (also known as programmed cell death or cellsuicide). Apoptosis is an essential component of numerous ...
Yeast Rises To A New Occasion
...accharomyces yeast needed to produce three strong enzymes
for it to efficiently convert xylose to ethanol. She then selected a yeast that could ferment xylose, but which was not effective for fermenting glucose, and cloned from that yeast three genes responsible for producing the xylose-fermenting enzyme...
Enzyme's Structure Yields Blueprint For Antibiotic Resistance
...iscerned to examine other members of the family of enzymes
withoutactually having to complete x-ray crystallo...ans in a potentiallylife-threatening manner. These enzymes
transfer an acetyl group to compoundsknown as aminoglycosides-widely prescribed antibiotics that inc...
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