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Tag: "sequence" at biology news

Ammonia-loving archaea win landslide majority

...State, Schuster used a novel technique to directly sequence only the transcribed portion of the genomes from soil organisms, thus giving proof that crenarchaeota are in fact active and not just dormant residents in the soil. Crenarchaeotal gene counts also do not change with soil depth, while bacterial g...

Researchers identify human DNA on the fast track

... Now a team of researchers has found the human DNA sequence with the most dramatically increased rate of change. The function of this region of DNA is still unknown, but it appears to be directly involved in the development of the human brain. "It's very exciting to use evolution to look at regions of our ge...

Scientists discover a genetic code for organizing DNA within the nucleus

...eosomes in live cells is controlled by the genetic sequence itself. Segal and his colleagues managed to prove that the DNA sequence indeed encodes "zoning" information on where to place nucleosomes. They also characterized this code...

NHGRI announces latest sequencing targets

...enys), setting the stage for completing a quest to sequence the genome of at least one non-human primate genom...s have already sequenced ?or have been approved to sequence ?at high-density coverage the genomes of several non-human primates including the chimpanzee (Pan tr...

CHAVI announces international search for genes affecting HIV response

...enetic analysis to search for minor changes in the sequence of 3 billion DNA letters that make up the human genome. The changes, called single nucleotide polymorphisms (SNPs), are like single-letter variations in the spellings of a word. The SNPs cluster in local neighborhoods, known as haplotypes, within the...

Fish virus in Northeast spreading to other fish species

...cular-based test for VHSV based on a specific gene sequence in the virus. Once available, the new technique will cut the turnaround for confirmation to three to five days. Groocock said the high number of dead fish reported recently may be due to the increased presence of vacationers on the lakes in summer, ...

DOE JGI finishes 100th microbial genome

...e (DOE JGI) will announce that it has finished the sequence of100 microbial genomes and released this informat... JGI averages over 3.1 billion bases or letters of sequence generated per month, or roughly the equivalent of a human genome once over. As microbes range in si...

DOE JGI sequences, releases genome of symbiotic tree fungus

The DNA sequence of Laccaria bicolor, a fungus that forms a benefic...Institute (DOE JGI). The complete Laccaria genome sequence was announced July 23 at the Fifth International Conference on Mycorrhiza in Granada, Spain by an in...

New lab technique churns out fungus' potential cancer fighter

...nal of the American Chemical Society, outlines the sequence of steps showing how Boeckman's group inserted, removed, or altered the three-dimensional and chemical structure of their compound until they produced complete rasfonin. Diagrams of the complete process are available on the Web at pubs.acs.org . "V...

New lab technique churns out fungus' potential cancer fighter

...nal of the American Chemical Society, outlines the sequence of steps showing how Boeckman's group inserted, removed, or altered the three-dimensional and chemical structure of their compound until they produced complete rasfonin. Diagrams of the complete process are available on the Web at pubs.acs.org . "V...

Viral genetic differences are possible key to HIV dementia

...i says. According to Pillai, an analysis of the sequence data suggests that HIV is "genetically compartmentalized" between the central nervous system (CNS) and the blood, "which means that the virus is replicating in relative isolation in these tissues, with very little exchange of genetic information betw...

Unusual mechanism keeps repair protein accurate

...lf was first discovered by scientists studying DNA sequence data produced by the Human Genome Project. Suo and his colleagues then became interested in learning how the repair protein worked. The protein has four distinct regions, or domains. Three of the regions had molecular structures that strongly sugg...

Mitochondrial DNA sequencing tool updated

...his interest stems from data that suggests natural sequence variations and/or mutations in each person's mitoc...s hands better sensitivity that its predecessor to sequence variations in head and neck cancer samples. The v2.0 also detected nearly three dozen variations in...

UF scientists discover evolutionary origin of fins, limbs

...that the first fins evolved along the midline. The sequence of evolutionary events leading to the origin of limbs has been known for some time, but only now are we deciphering how these events occurred at a molecular genetic level." Researchers isolated genes from the spotted catshark, a type of slow-moving...

Radioactive scorpion venom for fighting cancer

...rocedures for the therapy, currently in the second sequence of phase-II human trials, which involve higher doses of radiation than the earliest trials. "The health physicist has the duty to ensure to ensure that these therapies are conducted both legally and safely," Jackson says. "Obviously, a key object...

What's shaped like a pear and has 2 genomes? Check the pond

...phasized open access to data, providing the genome sequence data to outside researchers, without restriction, ... of the genomic data. In addition to releasing the sequence data early on TIGR's website ( www.tigr.org/tdb/e2k1/ttg/index.shtml ) and via Genbank, the projec...

DOE JGI releases IMG 1.5 with curated archaeal genomes

...mination 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 of the methodology and sta...

UAB researchers confirm HIV-1 originated in wild chimpanzees

...UAB investigators went on to molecularly clone and sequence the complete viral genomes from four individual chimpanzees. According to UAB post-doctoral researcher Brandon Keele, Ph.D., lead author of the report, "this allowed for unprecedented genetic comparisons to be done between HIV-1 and its closest simia...

Malaria, potato famine pathogen share surprising trait

...ommercial crops. The researchers swapped a small sequence of proteins, called the leader sequence, in P. falciparum with the leader sequence of P. infestans. A leader sequence is a group of about 20 to 30 amino acids on a protein secreted by...

New human retrovirus originated in mice

...rostate cancers revealed the presence of a genetic sequence that closely resembled that of a mouse virus called murine leukemia virus (MuLV). Murine leukemia virus is known as an endogenous virus because it normally exists as an integrated part of the mouse genome, rather than as independent, infective partic...

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