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.
This time, it was at Marjory Stoneman Douglas High School in Parkland, Florida. An active shooter was reported on Feb. 14, and the alleged gunman was taken into custody shortly thereafter. A federal official told the Associated Press that the shooting suspect is Nikolas Cruz, 19, a former student. Authorities announced that they apprehended the suspect after locating him off the school grounds, and he was âtaken into custody without incident,â meaning he didnât fight back.