Once the kinase domain of receptor protein-tyrosine kinase has been activated, what does the activated receptor protein-tyrosine kinase do?
A)The receptor subunits denature.
B)Each receptor subunit phosphorylates its partner on tyrosine residues found in regions adjacent to the kinase domain.
C)Each receptor subunit phosphorylates itself on tyrosine residues found in regions adjacent to the kinase domain.
D)The receptor subunits dephosphorylate each other.
E)The receptor subunits refold into a more effective conformation.

Question

Quizplus · Accepted Answer

Each receptor subunit phosphorylates its partner on tyrosine residues found in regions adjacent to the kinase domain. This process is known as autophosphorylation and is a critical step in the activation of many signaling pathways inside cells.

Once the Kinase Domain of Receptor Protein-Tyrosine Kinase Has Been