How many kinase steps are there from activation of the Ras protein to, and including, phosphorylation of the final target protein?
A) 1
B) 2
C) 3
D) 4
E) 5

Question

Quizplus · Accepted Answer

The Ras protein activates a kinase cascade known as the MAP kinase (MAPK) pathway. This involves three kinase steps: Raf (MAPKKK), MEK (MAPKK), and ERK (MAPK), culminating in the phosphorylation of the final target protein.

How Many Kinase Steps Are There from Activation of the Ras