Chapter 7 - Cell Communication and Multicelluarity - 7.3 - The Response to a Signal Spreads through the Cell - 7.3 Recap - Learning Outcomes - Page 142: 1

The G protein Ras mediates a response after it is activated by the protein kinase receptor. This creates a signal transduction pathway, an example of a protein kinase cascade where one protein kinase activates the next in a transductive chain. At each step in the cascade, the signal is amplified since each activated kinase is an enzyme that can catalyze the phosphorylation of multiple target proteins.

The G protein Ras mediates a response after it is activated by the protein kinase receptor. This creates a signal transduction pathway, an example of a protein kinase cascade where one protein kinase activates the next in a transductive chain. At each step in the cascade, the signal is amplified since each activated kinase is an enzyme that can catalyze the phosphorylation of multiple target proteins.