Whale carcass yields bone-devouring worms
... the trunk, hidden inside the whale bone, the body widens to form a large egg sac. The greenish roots, branching off from the egg sac, are filled with bacteria that break down oil in the whale bones.The scientists were initially puzzled by the fact that all the worms they collected were females. However, wh...Rice, Brookhaven physicists decode initial stage of cell fusion
..., a tiny hole between the two cells. This junction widens over time until one single, continuous membrane envelopes the contents of both cells. Huang and co-author Lin Yang, a former graduate student of Huang at Rice and now a postdoctoral physicist at Brookhaven's National Synchrotron Light Source (NSLS), ...Insights Into The Proteasome - A Fascinating Macromolecular Machine For Protein Degradation
...ild up a cylinder, traversed by a channel which widens into three large cavities that are separated by constrictions. In the Thermoplasma proteasome the two outermost constrictions are so narrow that only unfolded polypeptides are admitted to the interior. This size exclusion mechanism was ...