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Tag: "sequences" at biology news

Infused spleen cells found not to impact islet recovery and reversal of type 1 diabetes in mice

...ndocrine neoplasia (MEN2), the team identified DNA sequences that can control RET but had not been identified u...ode for protein, termed non-coding DNA. Unlike DNA sequences that code for protein, non-coding DNA, sometimes referred to as "junk" DNA, follows few rules for or...

Next good dinosaur news likely to come from small packages

...molecular evidence," Ostrom said. "We have protein sequences from material believed to be in range of half a million years old. We are carefully working our way back in time." She said it appears some proteins can endure longer than DNA. In a recent study Ostrom's students found that a protein in bone in an ...

Genome sequencing is for ecologists, too

...volutionary relatives of crustaceans. "The genome sequences are being completed for several insects because they are important model organisms -- like fruit flies -- or because they are important in disease or agriculture," said Jeffrey Boore, head of the evolutionary genomics program at the Joint Genome Inst...

New DNA 'fingerprinting' technique separates hemp from marijuana

...ts of DNA, each defined by particular "marker" DNA sequences that act like bookends. The lengths of the fragments within the bookends were found to vary according to the cultivar. Thus, the pattern of fragment lengths adds up to a composite picture of each cultivar. "With this technique, we find hundreds of m...

Study suggests that publicly available genome data may contain small but significant errors

...wever, the techniques used to derive these genetic sequences are imperfect, and many researchers may be unaware of potential errors lurking within the publicly available published, or "canonical" sequence. If an organism's genome is unstable, variable, and contains rearrangements within a population or betwee...

Ticks, flukes, and genomics: Emerging pathogens revealed

...y hidden from that particular host. "These genome sequences have revolutionized the types of experiments [scientists] can perform to understand these diseases," says microbiologist Yasuko Rikihisa of OSU's College of Veterinary Medicine. "Already, at least four labs are performing, or planning to perform, who...

Virginia Tech helping to develop higher quality, disease-resistant wheat varieties

...has been conducted wherein chromosome specific DNA sequences or markers have been used to identify genes controlling traits of economic importance in wheat varieties. This integrated project will enable us to demonstrate that DNA markers associated with such traits can be used on a routine basis to develop sup...

Aggression-related gene weakens brain's impulse control circuits

... version, contains a different number of repeating sequences in its genetic code than the other version (H), likely resulting in lower enzyme activity and hence higher levels of serotonin. These, in turn, influence how the brain gets wired during development. The variations may have more impact on males becaus...

UC San Diego partners with Venter Institute to build marine microbial genomics cyberinfrastructure

...expected to more than double the number of protein sequences currently available in the National Institutes of Health's GenBank. The metagenomics database will include new sequences, genes and gene families, together with their annotations and associated environmental metadata. The move from traditional orga...

HortResearch science reveals the natural potential of apples

...ces. The release comprises over 50,000 apple gene sequences - referred to by scientists as expressed sequence tags (ESTs). These are DNA sequences from active genes in the plant; genes that govern such characteristics as fruit colour and taste. B...

U-M scientists identify major psoriasis susceptibility gene

...a disease, scientists can find it by comparing DNA sequences in haplotypes from people with the disease to thos...ed in the study. Detailed analysis of these 10 DNA sequences revealed differences that were only present on psoriasis chromosomes, but never on normal chromosome...

NHGRI announces new sequencing targets

...econd plan will add DNA sequence to existing draft sequences of a number of primate species and add additional ...ist of index species for which high-density genome sequences are desirable. The third plan includes sequencing the genomes of eight new mammals at low-density ...

When good DNA goes bad

... breaks in mammalian cells. Interestingly, these sequences prone to forming Z-DNA are often found in genetic ...usly shown that Z-DNA can form only at certain DNA sequences because the shapes of the bases themselves contribute to Z-DNA formation. For example, the sequence ...

Cracking the genetic code for control of gene expression

...f Helsinki the researchers have been interested in sequences which regulate gene expression. The research group, led by professor Jussi Taipale, Ph.D, has defined the binding specificities of several transcription factors. Transcription factors are DNA-binding proteins which are required to activate gene expre...

Sociality of sweat bees evolved simultaneously during climate change

...ssils as well as more than 2,300 base pairs of DNA sequences from three genes to infer the evolutionary history, or phylogeny, of the family's eusocial lineages and their relatives. The DNA sequencing sheds light on how divergent the various species are from each other, and the fossils allow the researchers to...

Do plants have the potential to vaccinate against HIV?

...fective vaccines. By using specific immunoglobulin sequences in the fusion molecule, antigens could be targeted to specific cells in the immune system, the authors say. ...

Oops! Researchers publish new findings on the brain's response to costly mistakes

...t in a series of other letters. Some of the letter sequences were more confusing than others. They received immediate feedback telling them if they were wrong or too late in responding. "In general, the response to a mistake that cost them money was greater than the response to other mistakes, and the involv...

Strawberries by design

...ocedure for the efficient transfer of specific DNA sequences into the genome of strawberry. The scientists have used Agrobacterium tumefaciens, nature's genetic engineer, to introduce DNA into the woodland or alpine strawberry Fragaria vesca. The method takes advantage of Agrobacterium's circular DNA molecul...

Relationship of brain and skull more than just packaging

...e that the genetic basis of the complex regulatory sequences that cause the changes documented in craniosynostosis infants may also account for the changes observed in the evolution of the vertebrate skull. The researchers include Richtsmeier; Aldridge; Valerie B. DeLeon and Jayesh Panchal, The Johns Hopkins...

Research updates 65-year-old genetic discovery

...r have a change at the start." Both changes in the sequences cause this bitter taste receptor not to work. These are the findings that demonstrate that while some humans and some chimpanzees can not taste this bitter substance, the reasons why are different. Going forward, this new information can be used by ...

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