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Tag: "coordinate" at biology news

DNA Recombination and Repair—A New Twist to RecA Function

...e mended. But how RecA molecules within a filament coordinate and organize their activities to carry out these functions has remained obscure. Cox et al. addressed this problem in the test tube, by examining RecA filaments grown from mixing RecA protein with DNA. Previous experiments have shown that filament a...

Photos show jaguar vamping for camera

... WCS field biologist Erika Cuéllar, who is helping coordinate the WCS jaguar survey. The Wildlife Conservation Society is working to protect jaguars throughout their range with projects in several Latin American countries designed to safeguard healthy populations of this spectacular big cat. ...

Flocking together: Study shows how animal groups find their way

..., helps settle age-old questions about how animals coordinate their actions. Previously, scientists had looked f... apparently complex behaviors, the mechanisms that coordinate these behaviors may be surprisingly simple and generic," said Iain Couzin, a postdoctoral researcher...

Cerebral navigation: How do nerve fibers know what direction to grow in?

...w ephexin, Vav and other proteins work together to coordinate axon guidance." ...

Discovery clarifies role of peptide in biological clock

...t VIP is needed by the brain's biological clock to coordinate daily rhythms in behavior and physiology. Neurons in the biological clock, an area called the suprachiasmatic nucleus (SCN), keep 24-hour time and are normally synchronized as a well-oiled marching band coming onto the field at half time. Herzog and ...

Insects, viruses could hold key for better human teamwork in disasters

...be considered when developing strategies that will coordinate knowledge sharing in chaotic social settings where a small set of rules applied to local information drives decision-making," Hollingshead said. Put another way, while individual honeybees process only "partial and local information," they are able,...

NYU, Rockefeller researchers find complexity of regulation by microRNA genes

...human gene transcripts and that many microRNAs can coordinate their activities to regulate specific target genes. The paper contains detailed genome-wide predictions for all human microRNAs as well as tissue-specific predictions. Several predictions were validated experimentally. The findings demonstrate an unf...

Lipids get new comprehensive classification system

...that establish dynamic lipid networks. In order to coordinate their efforts with those of other groups, such as the Lipid Bank in Japan, the European Lipidomics Initiative, and the International Conference on the Biochemistry of Lipids based in Europe and to facilitate international collaboration, LIPID MAPS in...

Immune system's distress signal tells bacteria when to strike back

...ma, a chemical messenger the immune system uses to coordinate its efforts to get rid of bacteria. When these bacteria intercept this message, they recognize it as a threat, assess their own numbers and, if they have sufficient strength, activate genes that quickly transform them from benign passengers in the bo...

Mosaic mouse technique offers a powerful new tool to study diseases and genetics

...m, the part of the brain whose main function is to coordinate motor activity and maintain balance. The researchers used MADM to study the development of cerebellum granule cells, which are the most abundant cells in the brains of mice and humans. "Usually people think that all cerebellum granule cells are the ...

Researchers feed tiny pills of RNA to planarians to identify genes essential for regeneration

...ciated with diseases, such as ataxia (inability to coordinate muscular movements), bradyopsia (slow vision), and cancer. Only eight of those genes have a corresponding knockout gene in mice. This means researchers may be able to use planarians to learn about human diseases that can't be studied in other animal ...

A novel method to measure circadian cycles

...broblast cells. Just how does this brain structure coordinate genetic imperatives with environmental input including light fluctuations? And frequent fliers, bleary-eyed in foreign time zones, may get an answer to why waking up is hard to do. ...

Virtual animal shelters ?How the Internet is transforming the experience of pet adoptions

...volunteers can easily communicate with each other, coordinate their efforts and arrange adoption events and meetings between potential adopters and those fostering dogs in their homes, the Internet enables these organizations to function as a shelter without having a physical location where the work is done," G...

Clearing jams in copy machinery

...ity Pol III replicase and the low fidelity Pol IV, coordinate their action to cross obstacles encountered in the replication process. They attach themselves at the same time to one beta sliding clamp. Pol III copies the original DNA, and acts as a proofreader to catch any misspellings and cuts any base that is ...

NYU biologists map out early stages of embryo formation

...yo requires a core set of less than 1,000 genes to coordinate the early events that guide the development of the animal. The results further suggest specific roles for new genes that had not been studied before, and functional tests of a subset of these supported the predictions. Describing how embryos functio...

What Makes The Brain Tick, Tick, Tick: Researchers Gaining New Insights Into Brain's Internal Clock

...ing all its functions. The brain's internal clocks coordinate a vast array of activities from communicating, to orchestrating movement, to getting food, they said. In a review article in the October 2005 Nature Reviews Neuroscience, Buhusi and Meck discuss the current state of understanding of one of the brain...

Studies on human genome variation provide insight into disease

...standing the genomic basis for human diseases. To coordinate with the journal Nature 's publication describing the HapMap, the journal Genome Research is announcing a special issue entitled "Human Genome Variation," which is entirely devoted to studies using these data to provide insight into human biology ...

Housecat-sized Siberian tiger cubs get collared

...standing the genomic basis for human diseases. To coordinate with the journal Nature 's publication describing the HapMap, the journal Genome Research is announcing a special issue entitled "Human Genome Variation," which is entirely devoted to studies using these data to provide insight into human biology ...

Retinal scans eyed for New Mexico show cattle

... the date, time and a global positioning satellite coordinate of the location. "It's as simple as taking a picture," Encinias said. "Plus, we can do everything at chute side." Historically, 4-H and FFA exhibitors have been required to submit hair samples for DNA analysis to serve as a permanent means of iden...

How Fruitflies Know It's Time for Lunch

...ol what you eat and when, your nervous system must coordinate a laundry list of signals: internal signals contain information about energy level, food preferences, and metabolic need, while external signals relay information about the quality of available food, determined by its smell and taste. Scientists stu...

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