Nucleic acid
hideA nucleic acid is a macromolecule composed of chains of monomeric nucleotides. In biochemistry these molecules carry genetic information or form structures within cells. The most common nucleic acids are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). Nucleic acids are universal in living things, as they are found in all cells and viruses. Nucleic acids were first discovered by Friedrich Miescher in 1871.
Artificial nucleic acids include peptide nucleic acid (PNA), Morpholino and locked nucleic acid (LNA), as well as glycol nucleic acid (GNA) and threose nucleic acid (TNA). Each of these is distinguished from naturally-occurring DNA or RNA by changes to the backbone of the molecule.
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News tagged with nucleic acids
Gold Nanoparticles Delivery Platinum Warheads to Tumors
Nanotechnology / Bio & Medicine
Oct 29, 2009 |
4.9 / 5 (7) |
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(PhysOrg.com) -- Cisplatin is one of the most powerful and effective drugs for treating a wide variety of cancers, but serious side effects ultimately limit the drug's use and effectiveness. Now, however, researchers have ...
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Fatty acids clue for Alzheimer's
Medicine & Health / Neuroscience
Nov 13, 2009 |
2.6 / 5 (8) |
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(PhysOrg.com) -- The amount of fatty acids in the brain varies between healthy people and those with Alzheimer's according to new research from the University of Bristol, UK, supported by the Alzheimer's Research ...
Cells defend themselves from viruses, bacteria with armor of protein errors
Nov 25, 2009 |
5 / 5 (7) |
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When cells are confronted with an invading virus or bacteria or exposed to an irritating chemical, they protect themselves by going off their DNA recipe and inserting the wrong amino acid into new proteins to defend them ...
New discoveries in the yeast Saccharomyces cerevisiae
Nov 04, 2009 |
4 / 5 (1) |
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Researchers at UAB in collaboration with the University of Stellenbosch, South Africa, have discovered the structure of the PPC descarboxilase (PPCDC) enzyme present in the yeast Saccharomyces cerevisiae, a very important ...
Let them eat snail
Nov 19, 2009 |
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A nutritionist in Nigeria says that malnutrition and iron deficiency in schoolchildren could be reduced in her country by baking up snail pie. In a research paper to be published in the International Journal of Food Safety, Nu ...
Saving the single cysteine: new antioxidant system found (w/ Video)
Nov 19, 2009 |
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(PhysOrg.com) -- We've all read studies about the health benefits of having a life partner. The same thing is true at the molecular level, where amino acids known as cysteines are much more vulnerable to damage when single ...
Multitasking may be Achilles heel for hepatitis C
Nov 23, 2009 |
5 / 5 (1) |
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(PhysOrg.com) -- Hepatitis C, a formidable virus that affects 130 million people worldwide, is nursing some pretty impressive bruises. By knocking out sections and subsections of one of its proteins, scientists reveal weak ...
Nanostructured Integrated Circuit Detects Type and Severity of Cancer
Nanotechnology / Bio & Medicine
Nov 03, 2009 |
5 / 5 (3) |
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(PhysOrg.com) -- A team of investigators from the University of Toronto have used nanomaterials to develop an inexpensive microchip sensitive enough to quickly determine the type and severity of a patient's cancer so that ...
How fish is cooked affects heart-health benefits of omega-3 fatty acids
Nov 17, 2009 |
3.8 / 5 (10) |
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If you eat fish to gain the heart-health benefits of its omega-3 fatty acids, baked or boiled fish is better than fried, salted or dried, according to research presented at the American Heart Association's Scientific Sessions ...
Atomic-level Snapshot Catches Protein Motor in Action (w/ Video)
Nov 20, 2009 |
4.7 / 5 (3) |
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(PhysOrg.com) -- The atomic-level action of a remarkable class of ring-shaped protein motors has been uncovered by researchers with the Lawrence Berkeley National Laboratory using a state-of-the-art protein ...
With Help from a Bacterium, Cockroaches Develop Way to Store Excess Uric Acid
Nov 12, 2009 |
3.8 / 5 (4) |
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(PhysOrg.com) -- What life form can use materials as nutrients that we, and most other animals, would consider waste products?
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