When an importin α/β complex carries a protein destined to move into the nucleus, what does it bind to when it comes to the outer surface of the nucleus near the nuclear pore complex?
A)the torus
B)the outer ring of the nuclear pore complex
C)the inner ring of the nuclear pore complex
D)cytoplasmic filaments that extend from the outer ring of the nuclear pore complex
E)the transporter

Question

Quizplus · Accepted Answer

The cytoplasmic filaments that extend from the outer ring of the nuclear pore complex are the binding site for the importin α/β complex when it reaches the outer surface of the nucleus. This binding allows the complex to be directed towards the central channel of the nuclear pore complex for nuclear import.

When an Importin α/β Complex Carries a Protein Destined to Move