Can you explain the mechanisims by your words Which enzymat

Can you explain the mechanisims by your words ...

Which enzymatic activity is associated with CDKs? A. Degradation (cleavage) of proteins B. Phosphorylation of proteins C. De-phosphorylation of proteins D. Ubiquitinaton of proteins Explain mechanism of activation of CDKs: Activation of Cdk/cyclin complex

Solution

CDK binds a regulatory protein called a cyclin.  They are involved in regulating transcription, mRNA processing, and the differentiation of nerve cells. The four major mechanisms of CDK regulation are cyclin binding, CAK phosphorylation, regulatory inhibitory phosphorylation, and binding of CDK inhibitory subunits. They collaborate with cyclins to ensure the proper timing and sequence of cell-cycle events.