News tagged with dna sequences
You don't 'own' your own genes: Researchers raise alarm about loss of individual 'genomic liberty' due to gene patents
Humans don't "own" their own genes, the cellular chemicals that define who they are and what diseases they might be at risk for. Through more than 40,000 patents on DNA molecules, companies have essentially ...
Genetics Mar 26, 2013 | 4.8 / 5 (20) | 17 |
Scientists are beginning to decode the complex biology of aging and are optimistic that recent advances in research may lead to treatments that can slow or even reverse degeneration and disease.
Medical research Nov 15, 2011 | 4.6 / 5 (15) | 5
(AP) -- George Eberhardt turned 107 last month, and scientists would love to know how he and other older folks like him made it that far. So he's going to hand over some of his DNA. He's one of 100 centenarians ...
Genetics Oct 26, 2011 | 4.4 / 5 (11) | 5
It was the talk of Davos, grabbing the imagination of a forum otherwise shrouded in gloom: a miracle machine that cracks the code of life within hours and could revolutionise healthcare.
Genetics Jan 29, 2012 | 4.8 / 5 (10) | 2
A retrovirus called HERV-H, which inserted itself into the human genome millions of years ago, may play an important role in pluripotent stem cells, according to a new study published in the journal Retrovirology by scient ...
Medical research Jan 23, 2013 | 5 / 5 (9) | 2 |
In 2009, the DNA alphabet expanded. Scientists discovered that an extra letter or "sixth nucleotide" was surprisingly abundant in DNA from stem cells and brain cells.
Neuroscience Oct 30, 2011 | 5 / 5 (8) | 0 |
A team of researchers at Case Western Reserve University School of Medicine have identified a new mechanism by which colon cancer develops. By focusing on segments of DNA located between genes, or so-called "junk DNA," the ...
Genetics Apr 12, 2012 | 5 / 5 (8) | 0 |
Using the latest gene sequencing tools to examine so-called epigenetic influences on the DNA makeup of colon cancer, a Johns Hopkins team says its results suggest cancer treatment might eventually be more tolerable and successful ...
Cancer Jun 26, 2011 | 4.4 / 5 (8) | 0 |
It's not just our DNA that makes us susceptible to disease and influences its impact and outcome. Scientists are beginning to realize more and more that important changes in genes that are unrelated to changes ...
Arthritis & Rheumatism Jul 03, 2012 | 5 / 5 (7) | 0 |
In one of the first genome-wide studies to hunt for both genes and their regulatory "tags" in patients suffering from a common disease, researchers have found a clear role for the tags in mediating genetic ...
Genetics Jan 20, 2013 | 4.6 / 5 (7) | 0 |
A study led by researchers at Boston University School of Medicine (BUSM) has identified epigenetic mechanisms that connect a variety of diseases associated with inflammation. Utilizing molecular analyses of gene expression ...
Immunology Mar 01, 2013 | 4.8 / 5 (6) | 0 |
(Medical Xpress) -- The bacteria responsible for causing the 1348 Black Death, identified as one of the most cataclysmic events in human history, has been identified by a McMaster researcher.
Diseases, Conditions, Syndromes Aug 30, 2011 | 5 / 5 (5) | 0 |
Researchers at Baylor College of Medicine and Texas Children's Hospital have identified commensal bacteria in the human intestine that produce a neurotransmitter that may play a role in preventing or treating inflammatory ...
Inflammatory disorders Jun 17, 2012 | 5 / 5 (5) | 0
(Medical Xpress)—A new study in the US and Germany has added to our understanding of the human cytomegalovirus (HCMV) and how it manipulates the cells it infects.
Medical research Nov 23, 2012 | 4.8 / 5 (5) | 1 |
Scientists from the University of Utah and Omicia, Inc., a privately held company developing tools to interpret personal genome sequences, today announced the publication in Genome Research of a new software tool called VAAST, ...
Genetics Jun 23, 2011 | 5 / 5 (4) | 0 |
A DNA sequence or genetic sequence is a succession of letters representing the primary structure of a real or hypothetical DNA molecule or strand, with the capacity to carry information as described by the central dogma of molecular biology.
The possible letters are A, C, G, and T, representing the four nucleotide bases of a DNA strand — adenine, cytosine, guanine, thymine — covalently linked to a phosphodiester backbone. In the typical case, the sequences are printed abutting one another without gaps, as in the sequence AAAGTCTGAC, read left to right in the 5' to 3' direction. Short sequences of nucleotides are referred to as oligonucleotides and are used in a range of laboratory applications in molecular biology. With regard to biological function, a DNA sequence may be considered sense or antisense, and either coding or noncoding. DNA sequences can also contain "junk DNA."
Sequences can be derived from the biological raw material through a process called DNA sequencing.
In some special cases, letters besides A, T, C, and G are present in a sequence. These letters represent ambiguity. Of all the molecules sampled, there is more than one kind of nucleotide at that position. The rules of the International Union of Pure and Applied Chemistry (IUPAC) are as follows:
For more information about DNA sequence, read the full article at
This text uses material from Wikipedia and is available under the GNU Free Documentation License.