The MPF Protein Complex Turns Itself Off By

Question

The MPF protein complex turns itself off by
A) activating a process that destroys cyclin components.
B) activating an enzyme that stimulates cyclin.
C) binding to chromatin.
D) exiting the cell.
E) activating the anaphase-promoting complex.

Accepted Answer

The MPF protein complex turns itself off by activating a process that destroys cyclin components. This degradation of cyclin results in the inactivation of the MPF complex, which prevents the phosphorylation of its target proteins and allows the cell to progress to the next stage of the cell cycle.