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Repetitive in Biological News

Telomeres resemble DNA fragile sites

... Telomeres, the repetitive sequences of DNA at the ends of linear chromosomes, have an important ... telomeres with the aid of two other proteins. "Telomeric DNA has a repetitive sequence that can form unusual DNA structures when the DNA is unwound ...

The tiny difference in the genes of bacteria

... It is based on detecting short, repetitive DNA segments in the genome of bacteria. Every single bacterial strain has ... strains in a short time. The method is based on the existence of short, repetitive DNA segments in the genome of all living species. As in a tandem bike, ...

The tiny difference in the genes of bacteria

... It is based on detecting short, repetitive DNA segments in the genome of bacteria. Every single bacterial strain has ... strains in a short time. The method is based on the existence of short, repetitive DNA segments in the genome of all living species. As in a tandem bike, ...

Unusual use of toys in infancy a clue to later autism

... she explained. Ozonoff and her colleagues decided to look at repetitive behaviors that previous studies indicated developed later than two years ... diagnosed with autism. "We wanted to directly test whether or not repetitive behaviors so characteristic of autism might actually be apparent earlier ...

Mapping a clan of mobile selfish genes

... starting out in our primate ancestors 65 million years ago, one type of repetitive DNA called an Alu retrotransposon now takes up 10 percent of our genome, ... cell transcribes Alu elements, but they actually depend on another type of repetitive element, called L1, to make the enzyme that can reverse-transcribe them. ...

Centromeres cross over, a lot

... between repeated segments during recombination, a common problem with repetitive DNA. How methylation limits recombination, and why centromeres didn't lengthen as well as shorten, are unknown. Their repetitive structure makes centromeres recombinogenic by nature, and the authors ...

Brain pattern associated with genetic risk of obsessive compulsive disorder

... stop their responses. This task objectively measured the ability to stop repetitive behaviours. Both OCD patients and their close relatives fared worse on ... with stopping motor responses may contribute to the compulsive and repetitive behaviours that are characteristic of OCD. These brain changes appear to ...

Holding breath for several minutes elevates marker for brain damage

... of S100B into the blood suggests that holding one's breath for a long time disrupts the blood-brain barrier, they said. The concern is that repetitive exposures to severe hypoxia (lowered oxygen supply), such as that experienced by individuals training and competing in static apnea diving events, ...

Further gene mutations linked to autism risk

... syndromes with a strong genetic component. ASDs are characterized by disturbances in social behavior, impaired verbal and nonverbal communication, repetitive behaviors and/or a restricted range of interests. The genetics underlying ASDs is complex and remains poorly understood. The researchers compared ...

'Shortcuts' of the mind lead to miscalculations of weight and caloric intake, says Penn study

... a driver at a green light doesn't need to cycle through a series of decisions. Green simply means go. The brain has evolved to remove common or repetitive situations or tasks from our awareness because the capacity of our consciousness is quite limited. What ties these studies together is that ...

Computer model predicts brain tumor growth and evolution

... first principals of physics, such as conservation of mass, and it has allowed researchers to recreate tumor growth in a computer. Through subsequent repetitive testing against real tumors, they have also linked their computerized tumors to real-world brain tumors, or "gliomas," and can now watch tumor growth ...

A genome may reduce your carbon footprint

... related grass, it will be possible to infer unresolved regions, including retrotransposon family composition and composition of other abundant repetitive elements. Comparative approaches would be applied to better understand the molecular basis for differences between species that result in higher or ...

From cars to cancer: UH professor employs auto industry tools for tumor therapy

... increase the accuracy of radiation therapy. "We aim to better understand tumor deformations using geometric and statistical models rather than repetitive CT scans," said Kamrani, an associate professor of industrial engineering at the Cullen College of Engineering. "In this case, patients will undergo ...

Genetic secrets of date palm unlocked by researchers at Weill Cornell Medical College in Qatar

... of the entire date palm plant at a fraction of the cost and in a much shorter period of time. Using this approach, which takes advantage of the lower repetitive DNA in the date palm gene regions, we have increased the publicly available knowledge of the date palm gene by about 1,000 fold." Mr. Malek and ...

Dolphins maintain round-the-clock visual vigilance

... days earlier. Next Allen Goldblatt and Don Carder designed a visual stimulus to test the dolphins' vigilance while they continued listening to the repetitive beeps. Knowing that the dolphins' binocular vision is limited because their eyes are situated on opposite sides of their heads, Kamolnick trained one ...

Rotator cuff tears: Are they all in the family?

... of the rotator cuff on the undersurface of the shoulder cap (acromion) when moving the arm This may lead to a slow development of tears due to repetitive micro-trauma over time Age-related degeneration The potential impact of this research is that it is a springboard for attempting to ...

Fujitsu PalmSecure LOGONDIRECTOR Integrates with Passlogix v-GO Access Accelerator Suite

... are adopting biometric SSO solutions to remove loopholes in security procedures and increasing productivity by eliminating the need for repetitive physical entry of usernames and passwords." The Fujitsu PalmSecure sensor uses a near-infrared light to capture a person's palm vein pattern, ...

New therapeutic strategy could target toxic protein in most patients with Huntington's disease

... excess amounts of the amino acid glutamine. The key to whether the Huntingtin gene is normal or defective lies in a kind of genetic stutter: a repetitive sequence of the DNA triplet CAG, which codes for the amino acid glutamine. Stretches of CAG "repeats" appear in every human being's Huntingtin ...

Fujitsu PalmSecure LOGONDIRECTOR Integrates with Passlogix v-GO Access Accelerator Suite

... are adopting biometric SSO solutions to remove loopholes in security procedures and increasing productivity by eliminating the need for repetitive physical entry of usernames and passwords." The Fujitsu PalmSecure sensor uses a near-infrared light to capture a person's palm vein pattern, ...

New data suggest 'jumping genes' play a significant role in gene regulatory networks

... IL--Research performed in the Center for Biomolecular Science & Engineering (CBSE) at the University of California, Santa Cruz, suggests that mobile repetitive elements--also known as transposons or "jumping genes"--do indeed affect the evolution of gene regulatory networks. David Haussler, CBSE director ...

Sequencing of sorghum genome completed

... approach used in the sorghum sequencing that represents a significant advance in methodology. This approach takes into account the highly repetitive nature of large genomes including many plant species and the human genome. By using paired sequence reads instead of single sequence reads, the ...

NEC Foundation of America awards grant to NJIT

... of Education's National Institute on Disability and Rehabilitation Research. "The game will improve neuro-plasticity through intensive and repetitive training," said Richard Foulds, PhD, center director and associate professor in the department of biomedical engineering. Foulds expects more than ...

Biologists discover link between CGG repeats in DNA and neurological disorders

... MEDFORD/SOMERVILLE, Mass. Researchers have long known that some repetitive DNA sequences can make human chromosomes "fragile," i.e. appearing constricted or even broken during cell divisions. Scientists at Tufts University ...

Breast cancer genome shows evolution, instability of cancer

... occurs at the point where the cancer becomes invasive, leaving the milk duct system and going into surrounding tissues. The other is associated with repetitive structures called low copy repeats found in the genome itself, a finding not associated with genomic instability before, he said. The low copy ...

New research shows how gene function drives natural selection in important class of genetic elements

... more than half of most plant genomes and has led the way in determining the extraordinary rates of both amplification and removal of this type of repetitive element," said Regina Baucom, a genetics post-doctoral research assistant at UGA and lead author of the research. Understanding the evolutionary ...

A big bunch of tomatoes?

... and distribution of flowers; in peppers (capsicum) inflorescences do not branch, so flowers are singular; in tomatoes, inflorescence branching is repetitive and regular, forming a zigzagged vine The tomato mutants anantha (an) and compound inflorescence (s) have long been known to produce large numbers of ...

Researchers find link between nicotine addiction and autism

... meeting in Washington, D.C. Autism symptoms include impaired social interaction, problems with verbal and nonverbal communication, and repetitive or severely limited activities and interests. An estimated three to six of every 1,000 children are diagnosed with autism, and boys are four times ...

'Junk' DNA proves functional

... distinguish humans from all other species. The GIS study also highlighted the functional importance of portions of the genome that are rich in repetitive sequences. "Because a lot of the biomedical research use model organisms such as mice and primates, it is important to have a detailed ...

Corn researchers discover novel gene shut-off mechanisms

... RNAs of an unusual class known as "small interfering RNAs" in corn than there are in Arabidopsis. "This class of RNAs mainly functions to repress repetitive sequences, including mobile DNA elements called transposons," Meyers said. "Thus, small interfering RNAs act to protect the genome," he noted. ...

Nanoscopic screening process to speed drug discovery

... later if it displays the properties needed to treat cancer cells. One batch of nanoscopic beads can replace the work of thousands of conventional, repetitive laboratory tests. "This process allows the beads to do the work for you," explains Jed Macosko, project director and assistant professor of ...

Characterization of grapevine transposons furthers understanding of in vino variety

... for an in-depth analysis of its content. This sequencing has shown that genes constitute only a very small proportion of complex genomes, with repetitive sequences and (in particular) mobile genetic elements or transposons making up a much larger part. Although transposition is a highly mutagenic event ...

UT Health Science Center researchers study diet and autism

... up to six of every 1,000 children and is characterized by impaired social interaction, problems with verbal and nonverbal communication and unusual, repetitive or severely limited activities and interests. Researchers have discovered that there are differences in the central nervous system's anatomy and ...

The first autism disease genes

... various Autism Spectrum Disorders (ASD), all of which are characterized by deficits in language, social interaction, and a strangely restricted and repetitive behaviour (stereotypy). Disease onset occurs during the first three years of life. The earlier the disorder is diagnosed, the sooner the child can be ...

Study shows quantum dots can penetrate skin through minor abrasions

... fullerenes - or buckyballs - that Monteiro-Riviere showed in a 2007 study in Nano Letters can deeply and rapidly penetrate healthy skin when there is repetitive flexing of the skin. Additionally, Monteiro-Riviere's laboratory previously showed quantum dots of different size, shape and surface coatings ...

UCLA researchers develop new PET scanning probe that will allowing monitoring of the immune system

... with FAC and other PET probes. "This measurement is not invasive - it involves a simple injection of the probe," Witte said. "We could do repetitive scans in a single week to monitor immune response." Using conventional methods, oncologists are forced to wait weeks and often months to ...

Fast AFM probes measure multiple properties of biomolecules or materials simultaneously

... By testing different molecules and buffer solutions, researchers can determine the probability of molecule adhesion, a process that requires many repetitive measurements. This has implications in drug discovery, where determining how frequently certain soft biological molecules adhere to each other is ...

Iowa State researchers help piece together the corn genome's first draft

... put together, Schnable said. There are some 2.5 billion base pairs that make up the double helix of corn DNA. The corn genome also has long lines of repetitive code. And corn has 50,000 to 60,000 genes to identify and characterize. Thats about twice the number of genes in humans. Plus, 50 percent or more of ...

Novel mechanism for long-term learning identified by Carnegie Mellon researchers

... Thats why neuroscientists have been perplexed by data showing that at the level of individual synapses, or connections between neurons, increased, repetitive stimulation might actually reverse early gains in synaptic strength. Now, neuroscientists from Carnegie Mellon University and the Max Planck ...

New plant study reveals a 'deeply hidden' layer of the transcriptome

... RNAs, the vast majority of which hadnt been described before. These strange transcripts are associated with small RNA-producing loci as well as with repetitive sequence elements, says Gregory. They are under very tight regulation by the exosome, but we still dont know exactly what this means. It is ...

New studies suggest brain overgrowth in 1-year-olds linked to development of autism

... by severe deficits in social interaction and communication, is associated with a restricted range of activities and interests, as well as stereotyped repetitive behaviors such as lining up toys in a certain way or requiring basic routines. In normal brain development, neuronal connections are eliminated ...
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