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Microbiology News
Wed, 28 Jan 2015 14:14:23 EST
Damaged DNA may stall patrolling molecule to initiate repair
Sites where DNA is damaged may cause a molecule that slides along the DNA strand to scan for damage to slow on its patrol, delaying it long enough to recognize and initiate repair. These finding suggest that the delay itself may be the key that allows the protein molecule to find its target, according to researchers.
Wed, 28 Jan 2015 11:41:00 EST
New protein detonates 'invincible' bacteria from within
The epidemic of 'superbugs,' bacteria resistant to antibiotics, knows no borders -- presenting a clear and present danger around the globe. Now a groundbreaking discovery may strengthen efforts by the medical community to fight this looming superbug pandemic. By sequencing the DNA of bacteria resistant to viral toxins, researchers identified novel proteins capable of stymieing growth in treacherous antibiotic-resistant bacteria.
Wed, 28 Jan 2015 08:20:09 EST
From bacterium to biofactory
A genetic blueprint for organelles that give simple cells new functions has been developed by scientists. A research team has refuted a long-held assumption in biology: The scientists have shown that it is not only possible to extend the functions of organelles - organs of the cell - but also to form them from scratch with the help of genetic blueprints
Tue, 27 Jan 2015 14:08:17 EST
Dog disease in lions spread by multiple species
Canine distemper, a viral disease that's been infecting the famed lions of Tanzania's Serengeti National Park, appears to be spread by multiple animal species, according to a study published by a transcontinental team of scientists.
Tue, 27 Jan 2015 14:08:12 EST
New mechanism unlocked for evolution of green fluorescent protein
A primary challenge in the biosciences is to understand the way major evolutionary changes in nature are accomplished. Sometimes the route turns out to be very simple. An example of such simplicity is provided in a new publication that shows, for the first time, that a hinge migration mechanism, driven solely by long-range dynamic motions, can be the key for evolution of a green-to-red photoconvertible phenotype in a green fluorescent protein.
Tue, 27 Jan 2015 11:11:57 EST
The origin of life: Labyrinths as crucibles of life
Water-filled micropores in hot rock may have acted as the nurseries in which life on Earth began. A team has now shown that temperature gradients in pore systems promote the cyclical replication and emergence of nucleic acids.
Tue, 27 Jan 2015 10:03:39 EST
Respiratory chain: Protein complex structure revealed
Mitochondria produce ATP, the energy currency of the body. The driver for this process is an electrochemical membrane potential, which is created by a series of proton pumps. These complex, macromolecular machines are collectively known as the respiratory chain. The structure of the largest protein complex in the respiratory chain, that of mitochondrial complex I, has now been elucidated by scientists.
Mon, 26 Jan 2015 16:46:50 EST
Beating the clock: researchers develop new treatment for rabies
Successfully treating rabies can be a race against the clock. Those who suffer a bite from a rabid animal have a brief window of time to seek medical help before the virus takes root in the central nervous system, at which point the disease is almost invariably fatal. Now, researchers have successfully tested a treatment on mice that cures the disease even after the virus has spread to the brain.
Mon, 26 Jan 2015 15:05:06 EST
Researchers image, measure tubulin transport in cilia
The mechanism behind tubulin transport and its assembly into cilia have been observed in a new study, including the first video imagery of the process. "Cilia are found throughout the body, so defects in cilia formation affect cells that line airways, brain ventricles or the reproductive track," said the study's lead author.
Mon, 26 Jan 2015 11:22:43 EST
How tropical parasite hijacks cells
Scientists have pinned down how a dangerous tropical parasite which is transmitted by ticks manages to turn healthy cells into cancer-like invasive cells, according to research. Microscopic Theileria parasites infect the blood of mammals, particularly cattle, causing serious illness.
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