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Tag: "interactions" at biology news

Cellular message movement captured on video

...ering much as yet. We certainly don’t know all the interactions among these molecules that bring the cell into act...esearchers are eager to understand paxillin’s many interactions because their malfunctions have been linked to a variety of cancers, tumor metastasis, and other dis...

Modeling the restless brain

... emerge naturally from much faster, chaotic neural interactions that typically last only a few milliseconds. "Our model suggests that the cortical resting state is not time-invariant, but instead contains rich and interrelated temporal structure at multiple time scales that is shaped by the underlying structu...

Simulations unravel outer membrane transport mechanism

...e difficulty studying systems that involve complex interactions between proteins, particularly when one domain mov...gical data, simulations help researchers study the interactions of multiple proteins in complex systems, such as the TonB-dependent transporter, Gumbart said. “A...

A new plant-bacterial symbiotic mechanism promising for crop applications

...n pass on the nitrogen they have stored up. These interactions improve crop yields of leguminous plants that are crucial for human diet (soybean, peas, ground nuts and so on…) and as animal feed (alfalfa, clover, sainfoin). In addition, cultivation of legumes living in symbiotic association with bacteria can c...

Hormone helps mice 'hibernate,' survive starvation

...sts examined potential molecular cues and cellular interactions at play during starvation and fasting. They focused on a nuclear receptor – a protein that turns genes on and off in the body – called peroxisome proliferator-activated receptor alpha, or PPAR-alpha, which is known to control the use of fat as ene...

Study shows lizard moms dress their children for success

... field experiments to tease apart a complex set of interactions involving hormones, genetics, social interactions,...ir eggs estradiol." To understand these complex interactions more fully, the researchers plan to study the hormones and their effects in the field over several g...

Plants recognize their siblings, biologists discover

...ngs only occurred when they shared a pot, the root interactions may provide a cue for kin recognition.” Though ... more we know about plants, the more complex their interactions seem to be, so it may be as hard to predict the outcome as when you mix different people at a party....

Herpes virus hijacks DNA repair process

...nhanced viral replication wasn't linked to orf36's interactions with other molecules, researchers turned to mice lacking the genes for ATM and H2AX, the damage response proteins activated by infection. When they infected cells from these mice with murine herpes virus, its ability to reproduce was again curtailed....

Revealed -- Mosquito genes that could be controlling the spread of killer viruses

...tanding the genetics behind pathogen/immune system interactions in disease vector mosquitoes may help us understand why, for example, some types of mosquitoes can transmit a particular human pathogen while others cannot. If those that cannot have evolved an effective immune system that fights off the pathogen, we...

Eavesdropping comes naturally to young song sparrows

...any of their songs by eavesdropping on the tuneful interactions between other sparrows. In laboratory experimen...p with an adult in a large chamber and their vocal interactions were recorded and played to a second young bird in a separate chamber. The next day, the second you...

Moths mimic sounds to survive

...eed infrared video cameras to record predator-prey interactions that occur in fractions of a second. He also recorded the sounds emitted from each moth, as well as the sounds made by the bats. All the bats quickly learned to avoid the noxious moths first offered to them, associating the warning sounds with b...

Protein enables discovery of quantum effect in photosynthesis

... meet and interfere constructively ­ much like the interactions that occur between the ripples formed by throwing stones into a pond. The collaboration is a good illustration of interdisciplinary science. The Washington University group's expertise is in photosynthesis, especially antenna systems, and the We...

Scientists discover rare 'gene-for-gene' interaction that helps bacteria kill their host

...m attack. Although such so-called gene-for-gene interactions are thought to be common in diseases, very few examples of a single gene in a pathogen targeting a single gene in an animal or human host have been identified so far. Photorhabdus is a family of bacteria that in relatively small concentrations can...

A frown or a smile? Children with autism can't discern

...s of impairment in communication skills and social interactions and display restricted, repetitive and stereotyped patterns of behavior. “They don’t pick up what’s going on ?they miss the nuances, the body language and facial expressions and sometimes miss the big picture and instead focus on minor, less soci...

Toxoplasmosis infection trick revealed by scientists

...cellular studies to characterise the behaviour and interactions of the parasite protein and host cell sugars. This means that the team have a more detailed picture than ever before of exactly how the parasite recognises and attacks host cells in the body. Professor Steve Matthews from Imperial College London’...

Scientists develope a new model of artificial canine skin

...mis, separated by a basal membrane. A study of the interactions between the cell populations of the various layers...is of vital importance for skin biology, but these interactions cannot be investigated adequately by means of conventional cell cultures. Researchers at the UAB ...

Genome of yellow fever/dengue fever mosquito sequenced

...ence is expected to stimulate efforts to elucidate interactions at the molecular level between mosquitoes and the pathogens they transmit to humans. ...

Uniform language for describing genes of pathogenic and beneficial microbes

...cial, but all share many common processes in their interactions with their hosts. For example, all must initially ...for the exchange of information about microbe-host interactions will help researchers communicate information, and expand concepts from the studies of microbes and ...

MIT's ocean model captures diversity of underwater forests

...es that wax and wane in relative abundance through interactions with each other, and the environment, as dictated by natural selection," said Chisholm. Indeed the guiding principle of the new model is natural selection. It simulates the physical and chemical characteristics of the oceans, but adds to the virtu...

In young mice, gregariousness seems to reside in the genes

... Wisconsin-Madison have found evidence that social interactions among young mice result from basic motivations to be with one another. What's more, the researchers say, the extent of a young mouse's gregariousness is influenced by its genetic background. The work, reported today (April 3, 2007) in the journal ...

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