Finding the function of fish ferroportin
...n1 and establishes the zebrafish as a useful model organism for the study of hemochromatosis....Vitamin A's paradoxical role in influencing symmetry during embryonic development revealed
...know" where to locate themselves in the developing organism and what to differentiate into. "Paradoxical," is the Salk scientists' description of retinoic acid signaling in the uniform ball of cells that is the early embryo, because its signaling influences both the asymmetric arrangement of organs and tissue...Newly identified enzyme group converts protein into cellular traffic signal
... the unicellular pond protist Tetrahymena, a model organism that has abundant modified microtubules and shares many of the same properties of internal cell traffic as animal cells. "Although it has been known for some time that polyglutamylation occurs, the function of these glutamic acid chains on microtubul...Gene 'archeology' gets easier using Carnegie Mellon University software
...es, such as pesticides or drugs, and they help the organism to fight back. Over time, gene copies also can be lost. "You could use this information to plan additional gene studies or suggest strategies for circumventing drug and pesticide resistance in parasites," Durand said. "Other uses could include iden...For young canaries learning their song, freedom in youth gives way to rules in adulthood
...Sometimes by trying to see how far you can push an organism to do things it would not normally do you can learn more about the underlying mechanisms." "The song of canaries is characterized by a successive repetition of sounds, each sound repeated many times forming a phrase," Nottebohm explains, "for exampl...Evidence of 600-million-year old fungi-algae symbiosis discovered in marine fossils
...ier. But, was it carried over to land, or did each organism invade land and forge a new relationship independent of the marine relationship? If the latter, then the 600-million-year-old relationship may not be the direct ancestor of the 400-million-year-old relationship," Xiao said. Fungi and algae in modern ...Man, chimp difference may have made us prone to cancer
...apoptosis is one of the main processes used by the organism to fight cancer," says Nielsen. According to the study, immune defense genes also have evolved quickly, creating greater genetic differences between humans and chimps. "The main reason why immune- and defense-related genes have diverged is probably ...Genome of a social amoeba sequenced for the first time
... cells to aggregate and develop as a multicellular organism consisting of up to 100,000 cells, where individual members of the community sacrifice themselves to ensure the survival of others. In terms of its developmental lineage, the social amoeba dates back to before the plant-animal split. Studying it can ...Cigarette smoke exacerbates alcohol's effects on defense against Streptococcus pneumoniae
...kers are much more likely to be colonized with the organism in their mouths and nasopharynx than non-smokers. Smoking also injures cilia and alters the efficiency of their beating so that bacteria entering the trachea have an increased likelihood of making their way into the lungs." "Clinical studies of thi...DOE JGI releases latest version of IMG
...me analysis process. To extend the utility of the organism and gene analysis tools, several new features have...an enhanced support infrastructure for comparative organism statistics, and the ability to save and load organism and gene analysis settings from local user fil...DOE JGI sequences DNA from extinct cave bear
...rcass to utilize the nutrients present in the dead organism as an energy source. What remains and confounds the efforts to sequence and characterize these artifacts is an overabundance of microbial contaminants along with the occasional DNA fingerprints contributed unwittingly by the modern fossil hunters or ...New research provides evidence that Rh proteins act as CO2 gas channels
...rotein's biochemical function does not change from organism to organism." Kustu also notes that the Amt channels are needed when ammonia is available in low concentrations, while the Rh channels kick into gear at high concentrations of carbon dioxide like those found in humans. The concentration of CO2 in hum...University of Oregon scientist wins American Society for Microbiology award
...eir resident community of microbes using the model organism zebrafish. Her lab already is showing that the presence or absence of microbes may be as important as genetic factors for normal development. Guillemin says her research is possible "only because of the amazing zebrafish resources available at the Un...UCLA awarded more than $6 million for biodefense and infectious disease research
...acterial pathogens and will study an environmental organism that causes pneumonia and septicemia, and is a pot...al regulations. The researchers will work with the organism under tightly controlled conditions, with high security and extensive oversight by the university an...Pollution-eating bacteria produce electricity
...cterial spore is a dormant stage of growth for the organism and is highly resistant to heat, radiation and drying. Such characteristics could prove useful in future microbial fuel cell designs where the device need not always be operational but must survive long periods of hazardous conditions before being u...NHGRI selects 13 new targets for large-scale sequencing program
... School of Medicine, St. Louis. Assignment of each organism to a specific center or centers will be determined at a later date. NHGRI's process for selecting sequencing targets begins with two working groups comprised of experts from across the research community. Each of the working groups is responsible fo...JCI table of contents July 1, 2005
...ed in an artificial environment outside the living organism have immunosuppressive activity in vitro. Now in a study appearing online on June 9 in advance of the print publication of the July 1 print issue of the Journal of Clinical Investigation, Hisashi Bashuda and colleagues from Juntendo University inves...Monkeying around to improve organ transplantation
...ed in an artificial environment outside the living organism have immunosuppressive activity in vitro. Now in a study appearing online on June 9 in advance of the print publication of the July 1 print issue of the Journal of Clinical Investigation, Hisashi Bashuda and colleagues from Juntendo University inves...Penn receives $9.5 mllion NIH grant to create center for molecular discovery
...scientists around the world who study a disease or organism or a particular set of molecules downloading infor...taining a millimeter-sized zebra fish, an unlikely organism that has proven its worth in studies of heart or nerve function as well as in cancer biology because......t DNA segments that have been "conserved" from one organism to another during evolution play a biological role, or they would have been discarded as organisms evolved. By introducing the conserved segments into cells similar to osteoblasts (bone-forming cells), the team found that a 250-base-pair conserved re...