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Tag: "govern" at biology news

Staphylococcus aureus hides out in cells

...acellular pathogen, but the molecular details that govern its extended persistence remain largely unknown. The bacteria can generate relapsing infections even years after the first episode was apparently cured. “S. aureus intracellular survival appears related to its capability to adopt a discrete behavi...

How the brain's backup system compensates for stroke

...he dorsal premotor cortex (PMd), which is known to govern the selection of an action. The PMd is mirrored in the two brain hemispheres, and the left-hemisphere PMd is dominant in such motor control function. Researchers had known that after a stroke damages one side of the brain and paralyzes a limb, the PM...

New mechanism for nutrient uptake discovered

...Biology have discovered a new way that plant cells govern nutrient regulation—neighboring pore-like structures at the cell's surface physically interact to control the uptake of a vital nutrient, nitrogen. It is the first time scientists have found that the interaction of neighboring molecules is essential ...

Finnish scientists discovered a new approach to treat virus-induced lymphomas

...roteins, which engage cellular signaling pathways, govern cell proliferation and modulate apoptosis. Majority of the PELs appear to have an intact TP53 gene suggesting that genetic alterations are not selected for during PEL tumorigenesis. The results of this study demonstrate binding of the KSHV latenc...

Warming oceans threaten Antarctic glaciers

...gly subtle changes within the ice sheets that will govern their future sea level contribution."...

Major link in brain-obesity puzzle found

..., playing a key role in the flurry of signals that govern fat storage, sugar use, energy balance and weight, University of Michigan Medical School researchers report. And although it’s far too early to say how this protein could be useful in new strategies to fight the world’s epidemic of obesity, the fin...

Chronic jet-lag conditions hasten death in aged mice

... Past research has indicated that circadian clocks govern physiological rhythms in a great variety of tissues in the body, and that different aspects of the physiological clock can adjust to schedule changes at different rates. The researchers speculate that the internal lack of synchrony among different ph...

Researchers identify a key regulator for skin stem cells

...gues plan to study in more detail how Tcf proteins govern stem cell biology....

Researchers in Montréal and the US create model of key immune-system component

...to better understand the complex interactions that govern the functioning of the phagosome. "We have taken a crucial step here," Prof. Desjardins explains. "We can now reach a better understanding of the molecular processes involved in infections by using a global approach based on proteomics and genomic...

How nature tinkers with the cellular clock

...road implications. The principles discovered might govern also the control of other temporally regulated systems like embryonic development. The fast evolution of temporal regulation also raises the question in how far general conclusions about regulatory systems can be drawn from studying simple model orga...

No-mow grass may be coming to your yard soon

... the hormone acts to influence genetic events that govern development at the cellular level -- gives scientists a way to reshape the steroid pathway to develop plants that grow in specified ways. "We might be able to dwarf grass and keep it green by limiting brassinosteroids or increase the yield of rice ...

Dragonfly migration resembles that of birds, scientists say

...ny of the same behaviors, suggesting the rulesthat govern such long-distance travel may be simpler and more ancientthan was once thought. The research, published in the May 11 Biology Letters, is based on datagenerated by tracking 14 green darner dragonflies with radiotransmitters weighing only 300 milligr...

The shape of life: research sheds light on how cells take shape

...ical in developmental biology. But the forces that govern it are far from clear. Alan Turing, father of modern computer science, suggested that the basis for pattern formation was chemical. New research conducted at Brown University and published in the Proceedings of the National Academy of Sciences suppli...

New roles for growth factors: Enticing nerve cells to muscles

...sarily rely on an entirely new set of molecules to govern axon navigation, but instead uses growth factors already involved in embryonic development in clever and novel ways," Pfaff says. Skeletal muscle consists of thousands of muscle fibers, each controlled by one motor neuron whose cell body lies in th...

UN review shows need to halt destructive fishing practice

...sheries Management Organizations with authority to govern deep water fisheries ?the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) and the General Fisheries Council of the Mediterranean (GFCM) ?have taken steps to regulate bottom trawling. In 2003, the Gordon and Betty Moore...

Tropical forest CO2 emissions tied to nutrient increases

...a "limiting nutrient" because its availability can govern the growth rate of many organisms, said Cleveland. While slash-and-burn agriculture in the tropics often reduces soil phosphorus in the long run, the practice can initially make more phosphorus available to tropical soil microbes, increasing their m...

Gene expression becomes heterogeneous with age in humans and rats

...act our understanding of the molecular forces that govern age-related changes, are reported in the May 23rd issue of Current Biology by Mehmet Somel and colleagues at the Max Planck Institute for Evolutionary Anthropology and the University of Cambridge. One long-standing observation concerning the physio...

Rice scientists unveil 'nanoegg'

...with the odd and often counterintuitive rules that govern how light interacts with electrons at the nanoscale. "All metal particles have a sea of free electrons flowing continuously over their surface called plasmons," Nordlander said. "These plasmons slosh around constantly, just like waves in the ocean....

What's shaped like a pear and has 2 genomes? Check the pond

... "macronuclear" genome, which expresses genes that govern behavior. The current study sequenced the macronuclear genome, an impressively packaged bunch of coding genes, free of so-called junk DNA (noncoding sequences and other extraneous genetic elements) that litter the genomes of many organisms. "Pu...

Researchers map out networks that determine cell fate

... suspect that the same basic regulatory principles govern cell type determination in other tissues such as skin, brain and intestine. "We see elements of this framework of primary and secondary cell-fate determinants throughout the hematopoietic system," said study author Harinder Singh, the Louis Block P...

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