Bottom, signal enters the cell nucleus and causes transcription of DNA, which is then expressed as protein. The MAPK/ERK pathway (also known as the Ras-Raf-MEK-ERK pathway) is a chain of proteins in the cell that communicates a signal from a receptor on the surface of the cell to the DNA in the nucleus of the cell.
Shooting At U.S. Capitol Visitors Center: One Injured, Shooter In Custody. After multiple reports of shots fired at the United States Capitol building today, the Capitol and the White House have been placed on lockdown. The Associated Press is reporting that police report the shooter is down, and one woman, a bystander, appears to have been wounded.
The suspect has been rushed to the hospital after being shot by police at the Capitol Visitors Center, and it appears that the woman who was injured by the shooter was an innocent bystander not involved in the shooting at all. This would be the third shooting in the U.S. Capitol in the past 20 years, reports Heavy.