Researchers from the Max Planck Institute for Evolutionary Anthropology retrieved Neandertal nuclear DNA from cave deposits in northern Spain and southern Siberia, yielding new clues to the population history of Neandertals. With the advent of nuclear DNA analyses of sediments, similar studies at other sites can provide new insights into the deep human past that do not rely on the discovery of bones and teeth.
Investigators in China and the United States have injected human stem cells into primate embryos and were able to grow chimeric embryos for a significant period of time--up to 20 days. The research, despite its ethical concerns, has the potential to provide new insights into developmental biology and evolution. It also has implications for developing new models of human biology and disease. The work appears April 15 in the journal Cell.
New research by University of Texas at Dallas scientists could help solve a major challenge in the deployment of certain COVID-19 vaccines worldwide -- the need for the vaccines to be kept at below-freezing temperatures during transport and storage. In a study published online April 13 in Nature Communications, the researchers demonstrate a new, inexpensive technique that generates crystalline exoskeletons around delicate liposomes and other lipid nanoparticles and stabilizes them at room temperature.
An international team of researchers led by UC Riverside has observed picosecond charge transfer mediated by hydrogen bonds in peptides. A picosecond is one trillionth of a second. As short-chain analogs of proteins, crucially important building blocks of living organisms, peptides are chains of chemically linked amino acids. The discovery shows the role of hydrogen bonds in electron transfer.
To better understand how RNA in bacteria gives rise to protein--and potentially target these processes in the design of new antibiotics--researchers are turning their attention to the unique way this process happens in bacteria. University of Michigan researchers have directly observed previously hidden RNA regulatory mechanisms within bacteria. The results are published in PNAS.
The new study shows how one of Ebola virus's key proteins, VP40, uses molecular triggers in the human cell to transform itself into different tools for different jobs.
International scientists from around the world are warning that chemical pollutants in the environment have the potential to alter animal and human behaviour. A scientific forum of 30 experts formed a united agreement of concern about chemical pollutants and set up a roadmap to help protect the environment from behaviour altering chemicals.
The extent to which the composition of the microbiome of apples and oil pumpkins depends on the geographical location and what insights can be derived from this for breeding, health and shelf life of the fruits is shown in two recent publications by researchers at TU Graz.
A team of UBC Okanagan researchers has determined that the type of fats a mother consumes while breastfeeding can have long-term implications on her infant's gut health.Their study suggests that the type of fat consumed during breastfeeding could differentially impact an infant's intestinal microbial communities, immune development and disease risk.
Wastewater carries large quantities of organic substances into the rivers and lakes, leading to heavy growth of bacteria and oxygen deficiency. Measurement methods have so far been incapable of measuring this organic pollution precisely. A new method co-developed by experts from the Helmholtz-Zentrum Hereon should provide a clear image of the water conditions in the future. The work has now been published in the scientific journal Science Advances.