News tagged with dna sequences
Johns Hopkins researchers say they have discovered specific chemical alterations in two genes that, when present during pregnancy, reliably predict whether a woman will develop postpartum depression.
Psychology & Psychiatry May 21, 2013 | not rated yet | 0 |
The connection between human avian-origin influenza A (H7N9) virus infection and environmental sources of the virus were determined based on clinical data, epidemiology, and virological characteristics of the three early ...
Diseases, Conditions, Syndromes May 15, 2013 | 5 / 5 (1) | 0
A change to the so-called TERT gene considerably increases the risk of breast and ovarian cancer. This is the result of a current, multicenter study in which the University Department of Gynaecology and the ...
Cancer May 10, 2013 | not rated yet | 0
(Medical Xpress)—Using a state-of-the-art DNA sequencing technique, UA researchers have discovered genetic mutations underlying seizure disorders in previously undiagnosed children.
Neuroscience May 07, 2013 | 5 / 5 (1) | 0 |
The tick-borne Lone Star virus has been conclusively identified as part of a family of other tick-borne viruses called bunyaviruses, which often cause fever, respiratory problems and bleeding, according to ...
Diseases, Conditions, Syndromes May 02, 2013 | 5 / 5 (1) | 0 |
Can the patterns in tree branches or the meandering bends in a river provide clues that could lead to better cancer therapies? According to a new study from Virginia Commonwealth University Massey Cancer ...
Medical research May 01, 2013 | 5 / 5 (2) | 0 |
(Medical Xpress)—Researchers at the University of Illinois have identified biomarkers that can be used to determine ovarian cancer survival and recurrence, and have shown how these biomarkers interact with ...
Cancer Apr 30, 2013 | not rated yet | 1 |
A pioneering mobile device using cutting-edge nanotechnology to rapidly detect malaria infection and drug resistance will be ready for field testing this year, one year ahead of schedule.
Diseases, Conditions, Syndromes Apr 26, 2013 | not rated yet | 0
A unique new study led by University of Kentucky Markey Cancer Center researchers Guo-Min Li and Libya Gu, in collaboration with Dr. Wei Yang at National Institutes of Health, reveals a novel mechanism explaining the previously ...
Cancer Apr 25, 2013 | not rated yet | 0
An international research consortium led by CIC bioGUNE has discovered the involvement of a gene in the development of non-alcoholic fatty liver disease (NAFLD). Although the gene concerned (SLC2A1) had never previously been ...
Genetics Apr 24, 2013 | 5 / 5 (1) | 0
Scientists from King's College London have identified patterns of epigenetic changes involved in autism spectrum disorder (ASD) by studying genetically identical twins who differ in autism traits. The study, published in ...
Autism spectrum disorders Apr 23, 2013 | 3 / 5 (1) | 1 |
Researchers at UT Southwestern Medical Center have found that alternative splicing – a process that allows a single gene to code for multiple proteins – appears to be a new potential target for anti-telomerase ...
Cancer Apr 19, 2013 | 5 / 5 (4) | 0 |
Researchers of the hereditary cancer research group at the Bellvitge Biomedical Research Institute (IDIBELL) and the Catalan Institute of Oncology (ICO) conducted a functional and structural study of seven missense variants ...
Cancer Apr 18, 2013 | not rated yet | 0
A bizarre twist on the usual way proteins are made may explain mysterious symptoms in the grandparents of some children with mental disabilities.
Neuroscience Apr 18, 2013 | 5 / 5 (1) | 0 |
(Medical Xpress)—Cracking the DNA code for a complex region of the human genome has helped 14 North American scientists, including five at Simon Fraser University, chart new territory in immunity research.
Genetics Apr 17, 2013 | 5 / 5 (2) | 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
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