News tagged with mitochondrial
Ancient penguin DNA raises doubts about accuracy of genetic dating techniques
Nov 10, 2009 |
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Penguins that died 44,000 years ago in Antarctica have provided extraordinary frozen DNA samples that challenge the accuracy of traditional genetic aging measurements, and suggest those approaches have been ...
Australia discovered by the 'Southern Route'
Jul 21, 2009 |
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Genetic research indicates that Australian Aborigines initially arrived via south Asia. Researchers writing in the open access journal BMC Evolutionary Biology have found telltale mutations in modern-day Indian populations that a ...
'Great speciators' explained: It's intrinsic
Biology /
Jan 26, 2009 |
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New molecular research shows that birds within the family Zosteropidae—named white eyes for the feathers that frame their eyes—form new species at a faster rate than any other known bird. Remarkably, unlike ...
Gene mutation responsible for premature skin aging disease identified
Aug 31, 2009 |
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In the new print issue of Nature Genetics, scientists in Singapore and Germany report that mutations in the PYCR1 gene cause the rare genetic condition that results in premature skin aging and that is known as "wrinkly skin s ...
Scientists discover gene mutation responsible for hereditary neuroendocrine tumor
Jul 23, 2009 |
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University of Utah researchers and their colleagues have identified the gene that is mutated in a hereditary form of a rare neuroendocrine tumor called paraganglioma (PGL). The gene, called hSDH5, is required for activation ...
Scientists reveal connection between cancer and human evolution
Jul 02, 2009 |
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Researchers at Ben-Gurion University of the Negev (BGU) have discovered that gene mutations that once helped humans survive may increase the possibility for diseases, including cancer.
STAT3 protein found to play a key role in cancer
Jun 25, 2009 |
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A protein called STAT3 has been found to play a fundamental role in converting normal cells to cancerous cells, according to a new study led by David E. Levy, Ph.D., professor of pathology and microbiology at NYU Langone ...
New 'molecular clock' aids dating of human migration history
Jun 04, 2009 |
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Researchers at the University of Leeds have devised a more accurate method of dating ancient human migration - even when no corroborating archaeological evidence exists.
DNA may identify sailor 68 years after Pearl Harbor
Other Sciences / Archaeology & Fossils
May 26, 2009 |
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The call came unexpectedly a few weeks ago, the sharp ring and a calm voice asking whether she was Starring Winfield's sister.
Study confirms 3 Neanderthal sub-groups
Apr 15, 2009 |
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The Neanderthals inhabited a vast geographical area extending from Europe to western Asia and the Middle East 30,000 to 100,000 years ago. Now, a group of researchers are questioning whether or not the Neanderthals ...
Key protein in cellular respiration discovered
Apr 08, 2009 |
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Many diseases derive from problems with cellular respiration, the process through which cells extract energy from nutrients. Researchers at the Swedish medical university Karolinska Institutet have now discovered a new function ...
Alzheimer's disease linked to mitochondrial damage
Apr 02, 2009 |
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Investigators at Burnham Institute for Medical Research (Burnham) have demonstrated that attacks on the mitochondrial protein Drp1 by the free radical nitric oxide—which causes a chemical reaction called S-nitrosylation—mediates ...
Lice genomes: Pieces of a new puzzle
Mar 30, 2009 |
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Parents and school nurses take note. Lice are a familiar nuisance around the world and vectors of serious diseases, such as epidemic typhus, in developing regions. New research indicates that lice may actually ...
New clues about mitochondrial 'growth spurts'
Mar 02, 2009 |
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Mitochondria are restless, continually merging and splitting. But contrary to conventional wisdom, the size of these organelles depends on more than fusion and fission, as Berman et al. show. Mitochondrial ...
Nearly a century later, new findings support Warburg theory of cancer
Jan 12, 2009 |
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German scientist Otto H. Warburg's theory on the origin of cancer earned him the Nobel Prize in 1931, but the biochemical basis for his theory remained elusive.
