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Tag: "swap" at biology news

Study finds antibiotic resistance in poultry even when antibiotics were not used

...on the farms the researchers studied. Bacteria swap genes relatively easily, and Lee explained that the concern is that drug resistance genes from bacteria that infect poultry could be passed on to bacteria that cause human illness. With these resistance genes, human bacterial illness could become har...

Need oxygen? Cells know how to spend and save

...because COX4-1 already is in the mitochondria, the swap for COX4-2 occurs when the sensor turns on yet ano... "It's remarkable that the one-celled yeast also swap COX subunits in response to hypoxia, but because they lack HIF-1, they accomplish the swap in a comp...

New details on how the immune system recognizes influenza

...mportant because the virus rapidly mutates and can swap gene segments between strains, which could increase the ability of an avian virus to be transmissible to humans. In addition, only a handful of the epitopes are known to be associated with protective immunity. Most of the influenza virus epitopes ...

Biologists prove critical step in membrane fusion

Cells constantly swap cargo bound in vesicles, miniscule membrane-enclos...ckages of proteins and other chemicals. Before the swap can take place, the vesicle membrane must fuse with another membrane, creating channels packages can...

MicroRNA helps prevent tumors

...s the possible reason that the cells with this DNA swap became tumors. But this DNA swap removes not only the gene's protein-producing regions but also those areas that don't code for prote...

Does evolution select for faster evolvers?

...tion of a specialized protein that bacteria use to swap genes, has led to wide acceptance in recent years....ture of genetic information, making it feasible to swap whole sets of genetic code ?like the genes that allow bacteria to defeat antibiotics. "Life clear...

Genetically engineered blood protein can be used to split water into oxygen and hydrogen

... The scientists modified the porphyrin molecule to swap the iron for a zinc atom in the middle, which completely changed the chemistry and characteristics of the molecule. This modified porphyrin molecule was then combined with albumin; with the albumin molecule itself being modified by genetic enginee...

HIV gets a makeover

...the human virus's Vif. So Hatziioannou did another swap -- the SIV Vif gene for the HIV one -- and then another round of forced adaptation to create viruses that would multiply with vigor. The researchers dubbed their end result simian tropic HIV (stHIV): a form of HIV-1 that only differs from the orig...

Scientists find mutations that let bird flu adapt to humans

... virus. Most viruses, including influenza, readily swap genes with one another. In the new study, conducted by an international team of researchers, the viruses isolated from human patients in Vietnam and Thailand could recognize both human and avian cell receptors. By contrast, the viruses found in ch...

BGSU biologist trying to crack microscopic code

...e relatively interchangeable parts, but they don't swap perfectly. He compares the situation to two people speaking different dialects of the same language--"not everything makes total sense." But the TonB-Tol "cross talk" does provide a tool for mixing and matching parts of the systems and asking what's ...

Newly discovered killer cell fights cancer

... messenger, and, according to the researchers, the swap occurs only once. Then, the cell dies and is replenished by the bone marrow. "When an IKDC cell switches to its messenger function, the transformation is quite astonishing," says Pardoll. The cell sprouts long, hairy tentacles called dendrites. ...

Dying of excitement

...-2 into a binding site for the repressor GCF2 -- a swap that inhibited promoter activity in transfected rat brain cells. Whether the mutant promoter decreases EAAT2 expression in the human brain, as would be predicted, remains to be tested. ...

First big influenza genome study reveals flu evolution

... same cell, their separate RNA segments can easily swap material, resulting in entirely new strains. Type A influenzas (one of three major types, or genera) cause widespread flu among humans. Researchers classify type A influenzas according to structural variations in two surface proteins: hemagglutinin ...

European Commission funds EBI to do new research on synergies between bioinformatics and medical informatics

... jumping to humans, giving them the opportunity to swap genetic material with human strains, which could result in a more virulent virus. Researchers in Italy studied outbreaks that occurred among poultry between 1999 and 2003, to determine the risk of avian influenza virus transmission to persons in co...

Eating, body weight regulated by specific neurons

... jumping to humans, giving them the opportunity to swap genetic material with human strains, which could result in a more virulent virus. Researchers in Italy studied outbreaks that occurred among poultry between 1999 and 2003, to determine the risk of avian influenza virus transmission to persons in co...

First Whole Genome Map of Genetic Variability in Parkinson’s Disease

... jumping to humans, giving them the opportunity to swap genetic material with human strains, which could result in a more virulent virus. Researchers in Italy studied outbreaks that occurred among poultry between 1999 and 2003, to determine the risk of avian influenza virus transmission to persons in co...

Transplanting Animal Organs Could Soon Be A Reality

... jumping to humans, giving them the opportunity to swap genetic material with human strains, which could result in a more virulent virus. Researchers in Italy studied outbreaks that occurred among poultry between 1999 and 2003, to determine the risk of avian influenza virus transmission to persons in co...

Less virulent strains of avian influenza can infect humans

... jumping to humans, giving them the opportunity to swap genetic material with human strains, which could result in a more virulent virus. Researchers in Italy studied outbreaks that occurred among poultry between 1999 and 2003, to determine the risk of avian influenza virus transmission to persons in co...

New technique could alter field of mouse genetics

...otective antibodies. Bacteria use the mechanism to swap antibiotic-resistance genes among themselves. And scientists have "borrowed" and adapted the same handy technique to insert genes and mutate genes in fruit flies and simpler organisms to learn the function of individual genes. "We know how many gene...

Virologist finds contagious equine flu in dogs

...s. This is unusual, because flu viruses will often swap genetic material with other flu viruses when they jump species. For a new virus to enter another species it must overcome a number of barriers, such as finding a cell receptor to bind to in order to enter the cell and to reproduce sufficiently in the...

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