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Tag: "location" at biology news

UCLA scientists strengthen case for life more than 3.8 billion years ago

...h to reveal precisely the isotopic composition and location of the carbon inclusions in the rock." It is unknown when life first appeared on Earth, which is approximately 4.5 billion years old. The residue of ancient life that the scientists believe they have found existed prior to the end of the "late he...

First 'encyclopedia' of nuclear receptors reveals organisms' focus on sex, food

...omical study, researchers used mice to profile the location and activity of the superfamily of nuclear receptors. They found that receptors, by virtue of similar patterns of expression in certain tissues, separate into two main clusters to regulate reproduction and nutrient metabolism. Dr. Mangelsdorf said gr...

UF scientists discover evolutionary origin of fins, limbs

...fins made their evolutionary debut at a particular location on the sides of the body, intuitively one would think the genetic tools for fin development would be brought together in that place," said developmental biologist Martin Cohn, Ph.D., an associate professor with the UF departments of zoology and anato...

DOE JGI releases IMG 1.5 with curated archaeal genomes

... genomics remains the determination of the precise location of genes from DNA sequence information. DOE JGI has embarked on curating the gene models of microbial genomes culled from public sources. Towards this goal, IMG 1.5 now contains 22 archaeal genomes with curated gene models and detailed documentation...

New MRI technique shows emphysema in asymptomatic smokers

...ema increases airspace size, the ADC map shows the location and severity of the disease. "The ADC maps are very sensitive to changes in the lung structure," Dr. Fain said. "With this tool, it was shown that even smokers that appear healthy have enlarged lung airspaces that suggest emphysema is already develo...

Better beetle sought for salt cedar control

... The new site was selected because of its remote location and because itis not subject to other control methods, such as fire and chemicaltreatments, Carney said. A total of 25 egg masses have been released at three different sites,all within cages, Carney said. While the Posidi beetles are approved forope...

Scientists uncover rules for gene amplification

...a Institute of Technology have discovered that the location of a hairpin-capped break relative to the end of the chromosome will determine the fate of the amplification event Gene amplification is the increase in copy number of a particular piece of DNA and is a hallmark of tumor cells. Amplified genomic se...

UC San Diego biologists solve plant growth hormone enigma

... shows that each gene is switched on at a distinct location in the plant. Contrary to the current thinking in the field, the research shows that the patterns in which auxin is produced in the plant influence development, a finding that can be applied to improving crops. "The auxin field dates back to Charl...

USC researchers investigate protein that protects tumors

... to the protein's antibody to reveal the protein's location on the tumor cells. "The first step was to identify whether it's there [on cancer cells] and how often," he explained. "We found that it was present on 60 percent of the tumors ?and it's expressed from the very first stage of the cancer formation....

Experimental drug reverses key cognitive deficits, pathology in Alzheimer's

...relative inability to remember from day-to-day the location of the platform. In another memory test, however, the treated mice did not show improved performance compared to untreated mice. In this test--which depends on the function of another Alzheimer's-affected brain region called the amygdala--the mice w...

AIDS-related cognitive impairment exists in two separate forms

...rom colorectal cancer, independent of the stage or location of the cancer, or the age or gender of the patient...vidovre University Hospital. When tumor stage and location were factored into the test, the concordance between predicted survival and actual survival was 79 p...

Markers of gene, protein, or micro-RNA activity predict outcome in prostate and colorectal cancers

...rom colorectal cancer, independent of the stage or location of the cancer, or the age or gender of the patient...vidovre University Hospital. When tumor stage and location were factored into the test, the concordance between predicted survival and actual survival was 79 p...

UCR researchers design chip that can improve citrus varieties

... will help researchers locate many genes. The map location information will be used to make the development of new varieties more efficient. "This industry-supported effort both added to and made use of publicly available citrus sequences to develop an entirely new tool that will benefit all citrus researc...

Study finds 60 new genes controlled by DNA snippet

...h networks are believed to "decide" the timing and location of all gene expression, the process through which genetic information is converted into templates for protein construction. The current study, funded through a grant from the National Heart, Lung and Blood Institute, sought to survey the human and m...

Newly discovered killer cell fights cancer

...of their investigation, the scientists tracked the location of fluorescent-tagged IKDCs and their corresponding stage of transformation after infecting mice with bacteria called listeria. In assassin-mode, the IKDCs were found in the blood, lining of the gut, liver and other organs - all areas where there is...

US woman gives birth to baby from world's first frozen donor egg bank

...he woman's family profile to the infertile woman's location for treatment. The infertile woman is given the opportunity to choose the timing of her pregnancy, without involving the ongoing life and complications of a third party donor, by selecting and purchasing the eggs when she is ready to proceed. Als...

Scientists identify molecular structure of key viral protein

...ardetzky, Lamb and their colleagues determined the location of each atom within the structure. Jardetzky credits the very high intensity X-rays for enabling the researchers to image the structure at 2.85 angstroms. (An angstrom is one ten-billionth of a meter, or about one-hundred-millionth of an inch.) This...

Tandem transcripts team together

...the course of evolution, inserted into a different location in the human genome (chromosome 10), becoming a new gene that is actively transcribed in a variety of tissues. "Our findings might have applications in drug development," says Sorek. "Recombinant engineered fused proteins are currently being develo...

'Shuttling' protein possibly key to resilience of cancer cells

...uorescence enabled the researchers to pinpoint the location of c-Jun-ATF2 heterodimers and discover the shuttling movements of ATF2. The ATF2 protein also has been found in the cytoplasm of diseased brain cells in Alzheimer's disease and muscle cells in the heart, suggesting the same shuttling mechanism might...

Scientists discover dozens of new species in 'Lost World' of western New Guinea

...eries solved one major ornithological mystery ?the location of the homeland of Berlepsch's Six-Wired Bird of P...ns collected by indigenous hunters from an unknown location on New Guinea, the species had been the focus of several subsequent expeditions that failed to find ...

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