Dual brake on transport protein prevents cells from exploding

The structure of ABC transporter OpuA was determined in five conformational states. The conformation in which OpuA has transferred the substrate (red) from the receptor (blue) to the transport domain (green) is shown in the cartoon. The scaffold of the membrane is shown in yellow, and the motor unit that uses ATP to drive the […]

Earth is fighting a laser duel with the exploding Carina Nebula

Four orange laser beams blaze through the Milky Way while an angry purple nebula transfixes us with its death-stare. Happily (or sadly, depending on how much news you’ve consumed this week), Earth is not doomed; in fact, it’s an Earthly telescope that’s launching the lasers in this epic image from the European Southern Observatory (ESO). […]