Tag: "ends" at biology news
Surprising origin of cell's internal highways
...averina and colleagues tagged the growing ("plus") ends
of microtubules in human retinal epithelial cells ...nd that proteins normally associated with the plus ends
of microtubules, called CLASPs, localize to a specific compartment of the Golgi (the Trans Golgi Net...
Anthrax paralyzes immune cells with lethal toxin, UF research shows
...in works like a pair of scissors, snipping off the ends
of a key protein and preventing the transmission of messages within the cell. As a result, immune cells never receive the green light to assemble the actin motor, Southwick's findings demonstrate. "Together, these studies provide important clues a...
Baumann Lab defines proteins that distinguish chromosome ends from DNA double-strand breaks
...ring insight into the way cells protect chromosome ends
from misguided repair. Published in tomorrow's i...rements for the protection of telomeric DNA at the ends
of chromosomes. "Surprisingly, we found that neither long single-stranded overhangs nor t-loop fo...
Magnetic computer sensors may help study biomolecules
...gnetic field is created that is strongest near the ends
of the magnetic stack below the membrane—a field strong enough to trap nanoscale magnetic particles. The NIST experiments demonstrated that the spin valves not only can trap magnetic particles, but also can be used as the pivot point for rotating ...
Palau's coral reefs show differential habitat recovery following the 1998 bleaching event
... "Clearly, action is required at both ends
of the political spectrum ?both globally to reduce greenhouse emissions, but also locally to enhance reef resilience," says van Woesik. Van Woesik’s research appears in the April 2007 issue Coral Reefs, the journal of the Internationa...
Thymus transplants gives hope to babies with fatal immune disease
...ese babies have no thymus at all, a situation that ends
in death, usually by infection. These are the patients who are candidates for thymus transplantation. "We want people to know that when the diagnosis of complete DiGeorge anomaly is made, it is no longer a death sentence," said pediatric immunolog...
Danish researches solve virus puzzle
...ly focussed laserbeam this instrument can grab the ends
of the RNA tether and follow the process of how the pseudoknot is mechanically unfolded. A crucial slip of the cellular motor In their investigations the researchers use a pseudoknot which is related to bird flu. When the ribosome encounters ...
Woven scaffolds could improve cartilage repair
...lage is a type of connective tissue that lines the ends
of bones, providing cushioning and a smooth surface for their movement within the joint. Damage to cartilage is difficult to treat, the researchers said, because the tissue lacks a supply of blood, nerve and lymph and has limited capacity for repair....
Renegade RNA -- Clues to cancer and normal growth
...iR-29b microRNA were noticeably different from the ends
of other microRNAs. Suspicious that the six-block end might have something to do with miR-29b's location, the researchers chopped them off and stuck them on the end of another microRNA. When put into cells, the new microRNA behaved just like miR-2...
Cartilage discovery offers arthritis hope
... the smooth, hard cartilage tissue that covers the ends
of bones allowing them to glide over one another a...er and sufferers experience severe pain as the two ends
of the bones rub against each other." The team's findings ?published in the journal Proceedings of...
DNA ends: Common tool, different job
...hieve immortal growth. In addition, the natural ends
of chromosomes could potentially look like broken ...a long-standing puzzle, because mending chromosome ends
as though they were double-strand breaks would result in either unregulated degradation or end-to-en...
Batten down the hatches against HIV
...n. The required RNA molecules were fastened to the ends
of these chains. Once inside the cell, the RNA could easily be split off by means of a sulfur–sulfur bridge....
How to manage forests in hurricane impact zones
...hurricane hitting the U.S. coast before the season ends
on November 30. "Coastal areas in the southern United States are adapted to disturbance from both fire and high wind," says Stanturf, project leader of the SRS disturbance ecology unit based in Athens, GA. "But those adaptations only go so far in ...
Short chromosomes put cancer cells in forced rest
...ting an enzyme, telomerase, thereby shortening the ends
of chromosomes, called telomeres. "Normally, when...blood cells. Telomerase helps maintain the caps or ends
of chromosomes called telomeres, which shrink each time a cell divides and eventually - when the chr...
Scientists identify specific enzymes that make meningitis hard to fight
...s not cut the DNA. Instead, it removes damaged DNA ends
that prevent the DNA from being remade during the repair process. This has an important impact for our understanding of the precise pathways of DNA repair and the significance of the two separate functionalities that act in different DNA repair pathw...
Genomics throws species definition in question for microbes
...ssion on the definition of the term "species." It ends
with a set of specific recommendations including, but not limited to: The establishment of a subcommittee within the International Committee on Systematics of Prokaryotes to consider a paradigm shift in the species definition. The need for...
The influence of the menstrual cycle on the female brain
...he menstrual cycle that begins after ovulation and ends
on the last day of the period. 6. Gonadal neurosteroids: steroidal hormones produced by the gonads (ovaries and testicles), which interact with estrogen receptors, progesterone or androgens. 7. Luteinizing hormone (LH) is a hormone produced by...
Researcher examines polymers created with poultry feathers
...29 million tons of non-biodegradable plastic waste ends
up in landfills each year. Justin Barone, associat..., Ill. "Twelve percent of all plastic packaging ends
up in landfills because only a fraction is recycled," said Barone. "Once in the landfill, it doesn't...
Scientists crack rhino horn riddle
...s to be honed to a sharp point. The study also ends
speculation that the horn was simply a clump of modified hair. "The horns most closely resemble the structure of horses' hoofs, turtle beaks and cockatoo bills. This might be related to the strength of these materials, although more research is ne...
New clues to how sex evolves
... mammals, fungi, and so on - the telomeres on the ends
of the chromosomes anchor to the nuclear membrane in a transient structure called a 'meiotic bouquet,'" Dernburg says. "In C. elegans it's the Pairing Centers, not telomeres, that attach to the nuclear envelope. They do so seemingly randomly, not in ...
1 2 3 4 5