Cigarette smoke causes breaks in DNA and defects to a cell's chromosomes, Pitt study finds
...tissue, William S. Saunders, Ph.D., and colleagues discovered that exposure to even a small amount of cigarette smoke condensate equal to about 1/25 of a cigarette caused breaks to both strands of DNA and compromised the integrity of the cell's chromosomes. Cigarette smoke contains some 5,000 organic compoun...Molecular motor implicated in tissue remodeling
...istry and molecular biophysics. The research team discovered that MMP-1 moves along a collagen filament with a net unidirectional motion. One-way motion indicates that energy is being utilized, so the team looked for an energy source. While most molecules that act as motors are inside cells and get their energ...'Dead zone' area shrinking, Texas A&M prof says
...ead zone has been studied and tracked since it was discovered 20 years ago, DiMarco says. "We need to do some further research to determine the specific mechanisms under which hypoxia is created, maintained, and ultimately dissipated," he believes. DiMarco will present his findings next month at a meeting of th...Scientists sequence genome of kind of organism central to biosphere's carbon cycle
...ght we understood how diatoms use nitrogen, but we discovered they have a urea cycle, something no one ever suspected," Armbrust says. A urea cycle is a nitrogen waste pathway found in animals and has never before been seen in a photosynthetic eukaryote like a diatom, she says. Nitrogen is crucial for diatom gr...Pack-MULEs are toting a new look at plant evolution
...tigator of variation which likely makes them newly discovered players in evolution. At MSU, Jiang will continue to look at Pack-MULEs to try to better understand what their role is in evolution. She also will explore other questions such as the common use of MULEs in gene tagging the process of interrupting ...New molecular link key to cellular proteins involved in cancer progression, other diseases
...ty of North Carolina at Chapel Hill scientists has discovered the molecular mechanism used by cellular proteins that are known to be involved in cell development and progression of diseases including cancer. In certain cancers, including prostate cancer and lymphomas, members of the Polycomb group (PcG) of prot...Cancer vaccine based on pathogenic listeria bacteria shows promise targeting metastases
...nd cell biology at UC Berkeley, and his colleagues discovered that the tail is produced when ActA, a protein on the surface of the bacteria, interacts with a complex of host cell proteins called the Arp2/3 complex. The result is rapid polymerization of a skeletal protein called actin that piles up and physicall...New research shows plants can shuffle and paste gene pieces to generate genetic diversity
...am of researchers at the University of Georgia has discovered a new way that genetic entities called transposabl.... Sean Eddy of Washington University in St. Louis, discovered that capturing rice gene fragments is a way of life for one type of TE called MULEs. MULEs with...Pacific Northwest team unveils largest virus proteome to date
...RTLAND, Ore., and RICHLAND, Wash. Scientists have discovered a record number of proteins for one of the largest...reatments for these at-risk patients." The team discovered 71 proteins in mature HCMV, double the number previously identified. HCMV may express as many as 200...Researchers identify protein promoting vascular tumor growth
COLUMBUS, Ohio Researchers have discovered a new mechanism responsible for the growth of blood vessel tumors that can cause facial deformities in infants and young children, paving the way for an antibody-based treatment to remove cells that fuel the tumors' growth. Blood vessel tumors requir...High resolution satellite imagery assists hunt for infectious 'kissing bugs'
...sponse to treatment decreases with age. When first discovered in 1909, Chagas was a predominantly rural affliction, but urbanisation has brought it into towns and cities. The majority of the half a million inhabitants of Matagalpa are poor - made poorer still by the devastation of Hurricane Mitch in 1998 an...Evidence builds for potential new cancer drug target
...ved the c-myb gene from T cells and in the process discovered that c-myb is required for white blood cell formation," said Reddy. In other research conducted by the team but not yet published, c-myb was deleted from breast tissue. The researchers believe that this gene plays a critical role in breast cancer an...DNA barcode finds four new bird species
... In the future many more species will be discovered both by splitting currently described species and ...Park a previously unknown species of centipede was discovered two years ago. "DNA barcodes will be the key for the naturalist's field guide for the new...Tracing genes, biologists show lizard migration is traced to Florida
...Florida and elsewhere came from," said Kolbe. "We discovered that once an introduced species gets established in an area it can become a source for introductions elsewhere. And we also found that genetic variation can actually increase during subsequent introductions because with each introduction to Florida,...Researchers create nanotubes that change colors, form 'nanocarpet' and kill bacteria
...ng for what was forming the tubes, the researchers discovered that synthesis of a secondary salt and diacetylene, thereby creating a lipid molecule, also resulted in production of absolutely pure self-assembling nanotubes, all having the same diameter (89 nanometers) and wall thickness (27 nanometers). By compa......d with assistance from the BLM. The site was first discovered in 2001 by Utah Museum of Natural History volunteer Jodi Vincent, while on a survey looking for new fossil localities in the Monument. WHY: The specimen holds a wealth of information about dinosaurs prior to their extinction. The find is extreme...Alaska scientists find Arctic tundra yields surprising carbon loss
...y Chapin and colleagues working in northern Alaska discovered that tundra plants and soils respond in surprisingly opposite ways to conditions that simulate long-term climate warming. Their findings are published in the September 23, 2004 edition of the leading science journal Nature and are featured in the jou...New sequence involved in DNA replication timing may aid in cancer detection
Bethesda, MD - Scientists have discovered a DNA sequence that is involved in controlling the...sequences. Now, Huberman and Chulee Yompakdee have discovered a stretch of DNA that verifies this hypothesis. To study DNA replication timing, Huberman and Yompak...Master of antimalarial resistance
.... Fidock and colleagues note that one of the newly discovered pfcrt mutations can be found in a strain of malaria from Southeast Asia, suggesting their lab data have a parallel in the real world. The other members of the research team include Stephen Ward,Mathirut Mungthin and Patrick Bray of the Liverpool Scho...DURHAM, N.C. -- Biologists have discovered that the air pollutant nitric oxide acts as a plan...rmone to delay flowering in plants. The scientists discovered that while plants produce their own internal nitric oxide to regulate flowering, they are also influ...