Bacterial Toxin Surprises Scientists
... anchored to the membrane by two transmembrane stretches (see images), the protein is able to form an open channel by transporting just one more large stretch of amino acids across the membrane. This is unexpected because most protein channels thread themselves across the me...Cornell Researchers Precisely Date Wood From Ancient Tomb In Turkey
...; a blue strip pasted below begins at 362 A.D. and stretches around the corner to the present. Such simple displays belie the sophisticated technologies that are used at this and other dendrochronogy labs around the world to date ancient artifacts. Cornell's dendrochronology lab is funded by the National Scie...Hibernation: The Opposite of Sleep?
...und squirrel, hibernation probably feels like long stretches of icy stupor punctuated with short, costly-naps--proof, Barnes says, thatsleep is precious indeed....NCAR Scientists Trek To Africa For Biosphere-Atmosphere Chemistry Study
...fluence on tropical and global air chemistry. Huge stretches of African savanna and rainforest are burned each fall and winter for agricultural and territorial purposes. The fires produce large amounts of hydrocarbons and oxides of nitrogen, which interact with sunlight to produce ozone and other smoglike prod...Scientists Trek to Africa for Biosphere-Atmosphere Chemistry Study
...luence on tropical and global air chemistry. Huge stretches of African savanna and rainforest are burned each fall and winter for agricultural and territorial purposes. The fires produce large amounts of hydrocarbons and oxides of nitrogen, which interact with sunlight to produce ozone and other smoglike pro...Biogenic Emissions Higher Than Expected Over African Savanna
...he entire continent for the first time." Huge stretches of African savanna and rain forest are burned each fall and winter for agricultural and territorial purposes. The fires produce large amounts of hydrocarbons and nitrogen oxides (NOx). These react in the presence of sunlight to produce low-altitude...$2 Million Dollar Grant Funds Salton Sea Web Site
...a desert valley 278 feet below sea level. The lake stretches across Riversideand Imperial counties and measures 40 miles long and 17 miles wide.It is the major Pacific Flyway stopover each year for more than 1 millionmigratory birds-380 of the 900 species found in North America. It also supportsa $1 billion-a-......of the droplet. This inducesa river-like flow that stretches the DNA spans across the gap, allowing thetails to bind to the complementary oligonucleotides on the electrodes. DNA by itself is an insulator and won't work as a wire. So thescientists use a chemical process to deposit silver along the scaff......s different. Thewild or laboratory mouse's vision stretches from the ultra-violet range, whichhumans can't see, up through medium wavelengths to yellow-green. Humans see ina spectrum that extends from violet to red. Mice lack the photopigment or protein that allows them to see long-waveor red light...New Research Shows That Swarms Of Mayflies Are Laying Their Eggs On Roads Rather Than Rivers
...g insects use this polarised light toidentify open stretches of water where they can lay their eggs during theirbrief mating period. Entomologist Sándor Andrikovics of Eszterházy Teachers' Training Collegein Eger, Hungary, noticed swarms of mayflies laying eggs on the surface of localroa...Blindness Linked To The Cytoskeleton?
...ption system that identifies protein coding DNA stretches (exons) from a genomic DNA source. The advantage now was that this approach was independent of tissue type and transcription level of the gene in question (libraries of transcribed sequences are often made from a specific tissue and alway...University Of Chicago Researcher Receives Packard Fellowship
...es or gene fragments. "Junk" DNA, or introns, the stretches ofgenetic material that appear to have no real fun...as once every 30 minutes. If they had to copy long stretches of useless DNA every time they divided,their growth rate could be nowhere near as rapid. L...DOE Joint Human Genome Effort Exceeds Sequencing Goal
...se low-resolution maps capture features along vast stretches of DNA, fromthousands to millions of individual units. To reveal the details along the way,the methodical process of sequencing is employed, which photochemically readsthe identity and exact order, or sequence, of the four letters that make up thealp...Hopkins Researchers Find Genetic Colon Cancer Change In Healthy Cells
...y (MSI),involves an unusual duplication of certain stretches of DNA -- a sign of aglitch in the way DNA reproduces or repairs itself. Oncologists associate MSIwith cancers that come at a relatively early age and run in families. Some useMSI to predict a patient's outcome. When the Hopkins researcher...Genetic Uniqueness Threatens Florida Manatee's Future
... cope. Despite the manatee's ability to swim large stretches of water, thepopulations tend to stay put because of their dependence on specifichabitat features. The vegetarian animals prefer protected coastal watersand rivers, where seagrasses or fresh water vegetation are abundant, saidBowen, who is supervisin...When One Gene Has Two Roles, Its Second Function May Be Missed
...icialchromosome contains the GATA-2 gene plus long stretches of the DNA that bracketsit in the normal chromosome. When the artificial chromosome was injected intomouse embryos that lacked GATA-2, blood cell formation was restored, or"rescued," and live mice were born. Surprisingly, however, despite a normal bl......e fossil record for marsupials and their relatives stretches into the Mesozoic Era, known as the Age of the Dinosaurs, unraveling their evolutionary history has proved controversial because only very fragmentary fossils of this group have been found. The two newly discovered Deltatheridium specimens, which are...International Genome Team Deciphers Genetic Instructions For A Complete Animal
...dmillions of bits of worm DNA, pasted it into long stretches of documentedsequence, and dumped it into a public database. Slowly and with only a fewresearchers at first, the project grew in size, output, and funding after about1993. Besides daily e-mail contact, entire lab staff traveled back and forthfrom S...A New Encyclopedia Of Mouse Genes
...ing the genome sequences ofmouse and human as vast stretches of chromosome sequence are cranked out in themonths and years ahead. Marco Marra of the Washington University Genome Sequencing Center in St. Louis led a team of 42 scientists who surveyed the genes of the mouse, hoping tosnare many genes that are im...Whitehead Receives $7 million NIH Grant To Build High-Speed Sequencing Machines
...eristic of these machines is their ability to read stretches ofDNA that are more than 600 to 800 base pairs long. The longer read-lengths areabsolutely crucial to cost effective sequencing of the entire genome," says Dr.Eric Lander, Director of the Whitehead/MIT Center for Genome Research."Called BioMEMS sequ...