Scientists Identify Gene For Sexual Behavior In Male Flies
...ec. 13 issue of the journal Cell . The gene fru governs the fly's courtship andmating ritual, including it...ncipal investigators of the study. The gene fru governs the fly's courtship andmating ritual, including the male fly's ability to recognize a female.Males w...Scientists Bridge Gap In Cell Communication
...age of the well-studied process by which signaling governs wing growth. "We've shown that the MAD protein is a direct regulator of target gene transcription in response to a (specific) signal." The mapping of the communication pathways between cells is a fundamental quest in modern biology. Identif...Where Fossils Fear To Tread: Scientists Follow Genes To An Ancient Ancestor
... as embryos, share the same genetic machinery that governs body architecture, the only recourse for understanding how animals evolved different kinds of appendages was in the realm of comparative anatomy. And appendages, said Carroll, have been used as classic examples of independent evolution. But...Early Menarche Puts Young Girls In Peril
...at 12 instead of 16, as it did 100 years ago) that governs the bodies of today's girls. Brumberg points out that girls today are likely to be sexually active before the age at which their great-great grandmothers had even begun to menstruate. She compares the Victorian view on menarche with today's and chr...Prostate Cancer Switch May Yield Map Of Cancer Machinery, Targets For Drugs
...vered themolecular basis for a genetic switch that governs whether a cancer cellgenerates one or another form...s nucleus to theprotein-making machinery, where it governs production of FGF-R2. The scientists found that this string of messenger RNA actually inclu...Press Events At Spring Meeting
... magnetic reconnection, a fundamental process that governs manydynamic solar phenomena. All data from TRACE are freely available to the publicin near real time. (The Meeting session on TRACE will be later Friday morning.)......thismechanism, involving a delicate balancing act, governs the immune system'sresponse or nonresponse against infections, tumors, self, and transplantedorgans from either human or animal donors. "Although the relation between infection and transplantation immunity iscomplicated, the mechanisms and ru...Immortalizing Enzyme Does Not Make Human Cells Cancerous
...tips of chromosomes - is the biological clock that governs howmany divisions a cell will go through. With the new findings, the way now seems clear for research into newtherapies for age-related diseases and for cancer - two ends of the samespectrum. The scientists emphasize, however, that additional st...Scientists Discover Key Cog In Receptor That Governs Ripening
... years ago led a team that discovered thegene that governs the receptor for ripening and aging in plants. That discoveryunderpins the promise of one day being able to precisely control the process ofaging and ripening, to make fruits ripen on schedule and cut flowers last manymore days in their vases. The ne...Scientific team identifies gene critical in embryonic development
...uring embryonic development. The gene, called SIL, governs formation of theleft-right body axis, and is believed to be important in the correct placementof organs such as the heart within the developing organism, according toresearchers. The team, headed by Shai Izraeli of the National Cancer Institute,repor...Errant nerve cells risk a clockwork death
...n "final target-derived neurotrophicsystem," which governs the survival of neurons once they reach their finaldestination in the nervous system and kills off neurons that inadvertently reachthe wrong target. The newly described "intermediate control" system functionssolely to ensure accuracy in neural connec...Researchers identify unique circadian rhythm photoreceptor
..., the near-universal 24-hour biological clock that governs sleep and wakefulness, rest and activity, body temperature, cardiac output, and many other functions. In an article published in the March 30, 2000 issue of the journal Nature , Rosbash, Hall and Patrick Emery at Brandeis University, and Ralf Sta...... Benfey reports that he has identified a gene that governs how plant cells proliferate and organize to form r...that the Arabidopsis plant's SHORT-ROOT (SHR) gene governs asymmetric cell division in the root's cortex and endodermis (the layer of cells that regulates what...Defining a niche that regulates stem cells
...ers have discovered a set of regulatory cells that governs the behavior of stem cells in the fruit fly Drosophila. Stem cells retain the capability to divide and to develop into many types of adult cells. These studies suggest that the special properties of these regulatory cells allow stem cells to replen...Scientists find gene that fuels 'sexual arms race'
... University in St. Louis, one genetic circuit that governs sexual dimorphism - the diagnostic differences between the sexes - has been found and characterized. The discovery, described in the Thursday, Nov. 30, edition of the British scientific journal Nature, is important because it not only shows how and w...Cytoplasmic FRAP must enter and exit nucleus to perform
...unicationnetwork called signal transduction that governs cellular response to outside stimuli such as growth factors, hormones or foreign agents. If FRAP fails to briefly enter and exit the nucleus then some crucial proteins fail to synthesize, thereby preventing cell growth and proliferation. "This is i...Hopkins Children's Center researchers find cause for common kind of dwarfism
...ot necessarily caused by a defect in the gene that governs the production of human growth hormone." Using DNA from white blood cells, the Hopkins team sequenced the releasing hormone receptor gene. Of the three releasing hormone receptor mutations they found, all involved the substitution of a single amino a...Mouse with iron disorder offers clues to Parkinson's, similar diseases
...s sister protein, iron regulatory protein 1, IRP 2 governs the actions of various other proteins involved in iron metabolism. These include transferrin receptor, which transports iron into the cell; ferritin, which stores iron safely away from the cell's internal machinery; and iron exporters, which ferry i...How to build strong bones: Get milk, lose the booze
... the normal communication between bone cells which governs the delicate balance between how much bone is formed and how much bone is resorbed." Turner and his colleagues tested the effects of parathyroid hormone (PTH), an experimental drug treatment for osteoporosis, on rats whose bone formation had been su......s announced that they had discovered the gene that governs production of the transport protein and genetically engineered salt tolerance in the Arabidopsis plant. They published their findings in the Aug. 20, 1999, issue of the journal Science. The transgenic tomato plants were grown in greenhouses at the Un...