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.
ABC News previously identified the man as Larry Dawson of Tennessee. Dawson was arrested in Washington last fall. Nobody has been charged in connection with Monday's incident. UPDATE: 4:26 p.m. EDT â ABC News identified the suspect in the United States Capitol shooting Monday as Larry Dawson of Tennessee. He was arrested in the House last year after an incident in which he yelled that he was a prophet of God, according to the Daily Beast.