Cross-phosphorylation is possible when two receptor proteins with kinase domains:
A) are cleaved.
B) form dimers.
C) are internalized into organelles.
D) All of the above.
E) None of the above.

Question

Quizplus · Accepted Answer

Cross-phosphorylation can occur when two receptor proteins with kinase domains form dimers, which brings their kinase domains into close proximity and allows them to phosphorylate each other on specific tyrosine residues. Cleavage and internalization into organelles are not necessary for cross-phosphorylation.

Cross-Phosphorylation Is Possible When Two Receptor Proteins with Kinase Domains