Tag: "distance" at biology news

Timing is everything: First step in protein building revealed

...or orwavelength of light that is given off. If the distance between thefluorescent molecules changes, the colo...as a slight shift, indicating a smallchange in the distance between eIF1 and its relative, and then a muchlarger shift, indicating a much bigger separation.To p...

Plants respond similarly to signals from friends, enemies

...lief, the root-knot nematode signals plants from a distance and therefore does not need to attach itself to the plant to elicit a response. When the researchers studied L. japonicus plants missing the receptors that receive signals from other organisms ?certain genes in the plant were modified to accomplish ...

The secret lives of whales

...ometers away, which is a very reasonable dispersal distance for the animals that live on them,?says Smith. In the North Atlantic, where only 10% of historic populations of the great whales are estimated to still survive, Smith speculates that substantial species extinction may have occurred in the whale fall...

Scientists discover unique microbe in California's largest lake

...proteobacteriumjumped across the vast evolutionary distance that separates theproteobacteria and cyanobacteria, and switched places with the portionof the gene that had originally been inherited from the cyanobacterialparent."This finding shows that even this popular evolutionary chronometer canbe a mosaic of...

Revolutionary nanotechnology illuminates brain cells at work

...w versions of GFP. The cyan is excited and, if the distance between the colored proteins changes, more or less energy is transferred to the yellow protein. In this study, the cyan and yellow proteins behave as if they move away from one another when the sensor recognizes glutamate. Thus, there is more cyan an...

Too much water may be as dangerous as too little during long-distance athletic events

...t of fluid you consumed throughout. "All serious distance athletes should find out what their rate of fluid ...is and individualize their fluid intake prior to a distance event," Dr. Levine said. "It's also good to accept some mild dehydration during a long race. There a...

Bush, Cheney and Rumsfeld are now species of slime-mold beetles -- but strictly in homage

...t of fluid you consumed throughout. "All serious distance athletes should find out what their rate of fluid ...is and individualize their fluid intake prior to a distance event," Dr. Levine said. "It's also good to accept some mild dehydration during a long race. There a...

New design : complete

...t of fluid you consumed throughout. "All serious distance athletes should find out what their rate of fluid ...is and individualize their fluid intake prior to a distance event," Dr. Levine said. "It's also good to accept some mild dehydration during a long race. There a...

Molecular messengers perform a crucial role in the ability of injured nerve cells to heal themselves

...h for new therapies for injured nerve fibers. Long distance messengers star in many heroic tales, perhaps the ...ust transmit their phosphorus message over a great distance along the axon, and in the course of this arduous journey can easily lose their phosphorus en route....

To translate touch, the brain can quickly rearrange its sense of the body

... index finger, and asked them to judge whether the distance between the rods was greater or smaller than the distance between two additional rods touched on the forehead. When tendon vibration made the index finger see...

Researchers develop new method for facile identification of proteins in bacterial cells

...ts based on the time they need to travel a defined distance when being accelerated in a vacuum. In their study, Rolf U. Halden, PhD, PE, assistant professor in the Department of Environmental Health Sciences Bloomberg School of Public Health and his colleagues demonstrate how PMF and mass spectrometry are us...

Scientists focus on 'dwarf eye'

...ye adjusts its focus by growing, which changes the distance between the lens and the retina, the light-detecti... the back of the eye. Once the retina is the right distance from the lens for proper focus of images on the retina, a largely unknown mechanism that uses visual...

New bioinformatics technique for systematically analyzing key regions in DNA that help control gene activity

...s that help control gene expression, can be a long distance on the DNA strand from the genes they influence. R...observe how transcription factors bind to DNA at a distance from a gene, or how regulation happens," said Fidelis, a computational biologist in Livermore's Bios...

'Underground' tunnels discovered as means for communication between immune system cells

... were talking about a large metropolitan area, the distance would be about the equivalent to four or five city blocks. That's nothing short of amazing," remarked Dr. Salter, associate professor of immunology at the University of Pittsburgh School of Medicine. The authors are the first to explain the function...

Researchers discover how malaria parasite disperses from red blood cells

...plosive appearance, dispersing the merozoites some distance from the cell. During the release, Dr. Zimmerberg explained, the cell membrane appears to collapse inward upon itself and fragment into pieces. One previous theory held that the red blood cells and the merozoite-containing vacuoles inside them sw...

New law for resolution allows unprecedented sharpness in fluorescence microscopy

... seemed impossible to image details smaller than a distance where delta d is equal to 200nm using conventional lenses and visible light. For a long time, Abbe's law was regarded as being insurmountable. For higher resolution, the textbook knowledge was that a complicated and costly electron or scanning tunne...

Plants discriminate between self and non self

... in a chamber that forced them to grow a specified distance from each other and from roots of a neighboring plant. "We found that the roots grew significantly more and longer secondary roots on the non-self side," Falik told attendees at the 90th Annual Meeting of the Ecological Society of America today (Aug...

Prozac for future Plants on Mars

... in a chamber that forced them to grow a specified distance from each other and from roots of a neighboring plant. "We found that the roots grew significantly more and longer secondary roots on the non-self side," Falik told attendees at the 90th Annual Meeting of the Ecological Society of America today (Aug...

Gene therapy reverses genetic mutation responsible for heart failure in muscular dystrophy

...e AAV-8-treated hamsters were able to run the same distance as normal hamsters before tiring and for much longer than untreated LGMD hamsters. Furthermore, all of the untreated LGMD animals died of heart failure or other complications of muscular dystrophy around 37 weeks, while all of the AAV-8-treated LGMD ...

Chernobyl: The true scale of the accident

...d animals were seen in high exposure areas up to a distance of 20-30 kilometers. Outside that zone, no acute radiation-induced effects have been reported. With reductions of exposure levels, biological populations have been recovering, though the genetic effects of radiation were seen in both somatic and germ...

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