Researchers have discovered that some common messenger molecules in human cells double as hormones when joined to a protein that interacts with DNA.
Experiments at SLAC National Accelerator Laboratory solve a long-standing mystery in the role calcium atoms serve in a chemical reaction that releases oxygen into the air we breathe.
Scientists have for the first time mapped the atomic structure of a protein within a living cell. The technique, which peered into cells with an X-ray laser, could allow scientists to explore some components of living cells as never before.
A postdoctoral researcher, whose work at SLAC's synchrotron was key in adapting an X-ray technique to probe chemical bonds in new ways, will receive an annual scientific award.
In an experiment at SLAC's X-ray laser, scientists split molecules into two fragments using pulses of infrared light, and then used X-ray pulses to observe the transfer of electrons.
Scientists at SLAC have been blowing up "buckyballs" – soccer-ball-shaped carbon molecules – with an X-ray laser to understand how they fly apart. The results, they say, will help them interpret X-ray images of tiny viruses, individual proteins and other important biomolecules.
DNA’s molecular building blocks absorb ultraviolet light so strongly that sunlight should deactivate them – yet it doesn’t. A new SLAC study reveals details of a “relaxation response” that protects these molecules and the genetic information they encode.
Even in their infancy, X-ray lasers such as SLAC's Linac Coherent Light Source are notching a list of important discoveries, and a special issue of a scientific journal highlights their unique contributions to biological sciences.
By finding surprising similarities in the way immune system defenders bind to disease-causing invaders, a new study may help scientists develop new treatments.
Researchers have discovered that an Ebola virus protein can transform into three distinct structures with different functions. This rather uncommon property provides new clues for the development of potential drugs for deadly hemorrhagic fever.