Question #eeb0b

1 Answer
Nov 21, 2015

Cyclins are regulatory subunits of protein kinases.


  • Cyclin subunits are essential for activation of the protein kinase activity.
  • The levels of cyclins fluctuate during the cell cycle and in response to cellular and extracellular signals.
  • Hence, results in changes in the activities of the cyclin-dependent protein kinases that in turn regulate and control the cell cycle.

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