UNIVERSITY PARK, Pa., Aug. 20 -- Pennsylvania State University issued the following news release:
UNIVERSITY PARK, Pa. - All living things have a fleet of tiny copy machines that turn instructions from DNA into RNA, the molecules responsible for helping build proteins that keep organisms alive. One of those nanoscale machines, called eukaryotic RNA polymerase II, performs a crucial early step required by nearly every biological process. It makes messages, copying and carrying instructions from the cell nucleus to make proteins.
Until recently, scientists had only witnessed the eukaryotic RNA at work in carefully assembled test tubes, stripped of the chaotic realities of life inside a cell. Now, a team led by Penn State researchers has cap...