New research questions basic tenet of neuron function
...n scientists appearing in the Feb. 17 issue of the journal Neuron suggests that two distinct types of synaptic vesicles are responsible for the two different modes of neurotransmitter release ?one type of vesicle for spontaneous release, another vesicle associated with activity-dependent release. "These fi...Weill Cornell Research Reveals Secrets Of Trafficking Within Cells
... been done before, which is one of the reasons the journal editors are so excited about this study," he said. The new technology really paid off in terms of results, he added. "It turns out that clathrin regulates endocytosis in a manner we never suspected before. It's not a linear relationship, where simp...ASU researchers finds novel chemistry at work to provide parrot's vibrant red colors
...Wash., published in the Feb. 16, 2005 issue of the journal Biology Letters. Animals, like birds and fishes, commonly use biochromes like carotenoids to acquire red, orange or yellow coloration, but McGraw and Nogare found that these compounds are not responsible for the red colors found in the parrot specie...UCSD researchers maintain stem cells without contaminated animal feeder layers
...ifornia. Published in the April 2005 issue of the journal Stem Cells, the study shows that laboratory culture media enriched by a human protein called activin A are capable of maintaining human embryonic stem cells in a continuous undifferentiated state, ready for research. Undifferentiation means the stem ...Transport System Smuggles Medicines Into Brain
...Wash., published in the Feb. 16, 2005 issue of the journal Biology Letters. Animals, like birds and fishes, commonly use biochromes like carotenoids to acquire red, orange or yellow coloration, but McGraw and Nogare found that these compounds are not responsible for the red colors found in the parrot specie...Scientists develop new color-coded test for protein folding
...water, is described in the March 2005 issue of the journal Chemistry and Biology. "What we've developed is a simple and inexpensive sensor for determining when a protein changes its conformation," said study co-author Richard N. Zare, the Marguerite Blake Wilbur Professor in Natural Science in Stanford's De...Placenta Is A Rich Source Of Blood Stem Cells
...'' The study, published in the March issue of the journal Developmental Cell, found that blood stem cells appeared in the placenta early, with numbers peaking mid-gestation. Only the fetal liver, where blood stem cells are known to expand tremendously, had greater numbers of blood stem cells. Children's Ho...Highly adaptable genome in gut bacterium key to intestinal health
...gs are reported in the March 25, 2005 issue of the journal Science. "Bacterial cells in the human gut number close to 100 trillion," says Jeffrey Gordon, M.D., director of the Center for Genome Sciences at Washington University and professor of molecular biology and pharmacology. "Together, these microbes c...Researchers find missing genes of ancient organism
Yale scientists report in the journal Nature that the "missing" genes for tRNA in an ancient parasite are made up by splicing together sequences in distant parts of the DNA genome. The research led by Professor Dieter Söll in the Department of Molecular Biophysics and Biochemistry at Ya...Scientists identify genetic pathways essential to RNA interference
...fight human disease. The report will appear in the journal Science and is receiving early online release on the Science Express website at http://www.sciencexpress.org. "The gene activation produced by RNAi is exquisitely specific, which gives it enormous potential for therapeutic application," says Gary Ru......tion of the double helical structure of DNA in the journal Nature on April 25, 1953. For their discovery Watson and Crick received the Nobel Prize in Physiology or Medicine in 1962, together with Maurice Wilkins. Crick regarded the discovery as confirmation of his conviction that the origins and processes of...Introduced foxes transformed vegetation on Aleutian Islands from lush grasslands to tundra
... for the foxes. A study published this week in the journal Science now shows that the effects of the introduced foxes rippled through entire island ecosystems, transforming the vegetation from lush grasslands to scrubby, low-growing tundra. It turns out that the nutrient-poor volcanic soils of the Aleutian ...Researchers trace evolution to relatively simple genetic changes
...results, announced in the March 25, 2005, issue of journal Science, bring new data to long-standing debates about how evolution occurs in natural habitats. "Our motivation is to try to understand how new animal types evolve in nature," said molecular geneticist David M. Kingsley, a Howard Hughes Medical Ins...Octopuses occasionally stroll around on two arms, UC Berkeley biologists report
...results, announced in the March 25, 2005, issue of journal Science, bring new data to long-standing debates about how evolution occurs in natural habitats. "Our motivation is to try to understand how new animal types evolve in nature," said molecular geneticist David M. Kingsley, a Howard Hughes Medical Ins...Researchers add new tool to tumor-treatment arsenal
...earch, appears in the March 25, 2005, issue of the journal Cell. Dr. Thomas and a co-author Stefano Fumagalli, PhD, began this research while working at the Friedrich Miescher Institute for Biomedical Research in Basel, Switzerland, and completed these studies at UC's Genome Research Institute, where furthe...Scientists discover unique microbe in California's largest lake
...anographerWilliam Li, she published a paper in the journal Hydrobiologia in 2002that described five previously unknown species.The Salton Sea covers a surface area of 376 square miles insoutheastern California. Its current elevation is about 227 feet belowmean sea level, its maximum depth reaches 51 feet and...Potential Cure for Lymphoma in HIV patients
... the January 15, 2005,issue of Blood, the official journal of the American Society ofHematology.Because of the immunodeficiency associated with HIV, HIV-positivepatients are more likely to develop lymphoma than HIV-negativeindividuals, and the treatment for their cancer is far less likely tobe successful. S...New SARS Protein Linked To Important Cell Doorway
...rtant viral proteins. As reported recently in the journal Structure, their efforts revealed orf7a, a SARS protein that makes its home in a structure cells use to modify proteins destined for transport to the cell surface. Researchers don't have any hard evidence of orf7a's function, but they speculate that ...MSI releases 'moleculizer' - a new approach to simulation of intracellular biochemical networks
...lPublic License.Nature Biotechnology is "a monthly journal covering the science andbusiness of biotechnology. It publishes new concepts intechnology/methodology of relevance to the biological, biomedical,agricultural and environmental sciences as well as covers thecommercial, political, ethical, legal, and s...Scientists document complex genomic events leading to the birth of new genes
... Molecular Biology Laboratory, report today in the journal Genome Research that they have identified a new primate-specific gene family that spans about 10% of human chromosome 2. Comprised of eight family members, the RGP gene cluster may help to explain what sets apart humans and other primates from the re...