A protein that becomes marked in a sequence called the destruction box and is degraded by proteasomes is
A) tubulin.
B) cyclin.
C) Ras.
D) cAMP-dependent protein kinase.

Question

Quizplus · Accepted Answer

Cyclin is a protein that regulates the progression of the cell cycle and becomes marked in the destruction box sequence during the transition from the metaphase to anaphase. Once marked, it is targeted for degradation by proteasomes to ensure proper cell cycle regulation.

A Protein That Becomes Marked in a Sequence Called the Destruction