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Tag: "reaches" at biology news

Physicist cracks women's random but always lucky choice of X chromosome

... nascent protein plugs narrowly wins that race and reaches an energy state in which it can pull together all the material building up in both plugs into a single protein plug. That single plug then closes off one of the XIST suicide genes allowing its host X chromosome to continue to operate. However the oth...

Tracking sperm whales and jumbo squid

...s species is found only in the eastern Pacific, it reaches from Alaska to Chile and supports the largest cephalopod fishery in the world," said Gilly, an authority on squid who is based at Stanford’s Hopkins Marine Station. "It’s very rare to find a place like the Gulf of California where you can actually...

NASA predicts nongreen plants on other planets

...ed on the planet’s atmosphere where the most light reaches the planet’s surface. The dominant photosynthesis might even be in the infrared. "This work will help guide designs for future space telescopes that will study extrasolar planets, to see if they are habitable, and could have alien plants," said Vi...

New findings blow a decade of assumptions out of the water

... The house could get quite chilly before the draft reaches the thermostat and the furnace turns on. But if the thermostat is in the same room as the window, the furnace will turn on and even out the temperature much faster. In his research Deutsch used a novel analysis of surface nutrients in the world's ...

Ocean's 'twilight zone' may be a key to understanding climate change

... below the surface. Because the carbon often never reaches the deep ocean, where it can be stored and prevented from re-entering the atmosphere as a green-house gas, the oceans may have little impact on changes in the atmosphere or climate. The research is the result of two international expeditions to the ...

Vitamin D deficiency widespread during pregnancy

...rthern latitudes, where less ultraviolet radiation reaches the Earth. Indeed, vitamin D deficiency is more than three times as common in winter than in summer for all women of childbearing age in the United States. Even so, the Pittsburgh researchers' study is cause for concern. "This study is among the l...

Nobel Laureate finds 'elegant' explanation for DNA transcribing enzyme's high fidelity

... Further study revealed that, when a matching NTP reaches the addition site, the trigger loop swings from its usual position some distance away until it rests parallel to the NTP. It then forms a network of interactions—some 20 to 30 in all—with components of the NTP, a process that serves to “recognize all...

Train your brain to hear your friends at a party

...ft will reach the left ear slightly faster than it reaches the right ear). This is known as binaural or "spatial" hearing because it helps us identify where a sound is coming from and to concentrate or focus our hearing on that particular sound. But, if you have some form of hearing problem in at least o...

From a lowly yeast, researchers divine a clue to human disease

...ted by gaps to mark boundaries. As the polymerase reaches the end of a gene, Sen1 flips a switch and knocks it off the DNA track. The group, led by Brow and Eric Steinmetz, compared normal yeast to a strain with a mutated form of Sen1 that does not see the stop signal. "The Sen1 mutant reads right throug...

Giant insects might reign if only there was more oxygen in the air

... The disproportionate increase in tracheal size reaches a critical point at the opening where the leg and body meet, the researchers found. This opening can get only so big, and limits the size of the trachea that runs through it. When tracheal size is limited, so is oxygen supply and so is growth, Kaiser...

U-M researchers use nanoparticles to target brain cancer

... works by traveling through blood vessels until it reaches the vessels supplying blood to the tumor. When activated by light, the Photofrin collapses these blood vessels, starving the tumor of the blood it needs to survive. Results of the study appear in the Nov. 15 issue of Clinical Cancer Research. "...

Molecular 'signature' protects cells from viruses

...bstance, the RNA. Via pores in the cell nucleus it reaches the cell plasma. The individual parts of the desired protein are put together there on a kind of assembly line. In this process the assembly line follows exactly the blueprint which is stored in the relevant RNA. This method has an Achilles heel: 'e...

New engineered drug may offer prolonged arthritis relief

...ared very rapidly and there is no evidence that it reaches the joint space," said Helawe Betre, who performed these studies for his doctoral work at Duke and now works at Zimmer Orthobiologics. "We set out to develop a modified version of the drug that when injected directly might stay in the joint long enou...

Planning ahead: Having the healthiest baby possible

...In order to ensure that this important information reaches a wider public, the Supplement has been made available on our online platform SpringerLink, free of charge, to anyone." The Supplement can be viewed at http://springerlink.com/content/k33g85g4242v/?p=5e9442a6c00a40888ebe95936ebca50a&pi=4 . ...

Amgen introduces comprehensive financial assistance programs for cancer patients

...ess of income or insurance status. Once a patient reaches the cap (five percent of their adjusted gross income), he or she will become eligible for the SAFETY NET® Foundation. The SAFETY NET Foundation is a well-established patient assistance program that provides Amgen oncology medicines at no cost to qu...

Study defines effective microbicide design for HIV/AIDS prevention

...oying human immunodeficiency virus (HIV) before it reaches vulnerable body tissues. Using the tool, the researchers have determined that a thin, long-lasting coating of microbicide delivered to susceptible tissues in a woman's vagina can significantly reduce the spread of HIV. The researchers reported th...

New study reveals structure of E. coli multidrug transporter protein

...ydrazone, a known efflux pump inhibitor, before it reaches the cell cytoplasm. This binding is likely facilitated by hydrophobic interactions within the internal cavity of EmrD. The researchers speculate that cyanide m-chlorophenyl hydrazone is either expelled from the bacterial cell or into the periplasmic ...

One-dimensional diffusion accelerates molecular motors

...The researchers were able to show that the protein reaches the position via a random, one-dimensional diffusion movement along the microtubule, until it locks into place at its end (Nature, May 4, 2006). This discovery is important for understanding cellular life processes like cell division and nerve cell g...

Researchers appeal for new regulations to save coral reefs from live fish trade

...e Napoleon wrasse, a giant reef fish that commonly reaches 2 m in length and lives for more than 30 years, are top of the menu and especially vulnerable. But once on the plate, the absence of an important part of the food chain means the coral reef hierarchy is in turmoil. The coral-eating crown-of-thorns ...

New roles for growth factors: Enticing nerve cells to muscles

... allegiance to a particular muscle fiber before it reaches out to connect with its predetermined partner. But until now, scientists could only speculate how the invisible bond was formed. "The question was how do these motor neurons know where to go," says Pfaff. "It would be a disaster if you wanted to mov...

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